The SINOTRUK WD615 engine is one of the most widely deployed powertrains in the world's most demanding environments — hauling aggregate across Sub-Saharan Africa, pulling overloaded construction trailers through Middle Eastern deserts, and running 24-hour logging shifts in Southeast Asia. Built around a proven inline-6 turbo-diesel architecture and produced in volumes exceeding one million units, the WD615 is not just an engine: it is the economic backbone of fleets in over 50 countries.
But durability has a ceiling. At 600,000–800,000 km under normal operating conditions, or far earlier in high-dust, high-load, or poor-maintenance environments, even a well-serviced WD615 will reach a decision point: continue running with accelerating wear, or perform a scheduled overhaul that restores factory performance and extends service life by another 500,000+ km. For a fleet operator managing 20 or 50 trucks, getting that decision right — and executing the overhaul correctly — represents the difference between a controlled cost and a catastrophic writeoff.
At JINAN ARCHER TRADE CO.,LTD, we have supplied WD615 overhaul kits and individual engine components to fleet workshops across Africa, the Middle East, Latin America, and Southeast Asia. This guide draws on that field experience to give fleet managers a clear, actionable framework: when to overhaul, how to prepare, the complete disassembly and reassembly sequence, critical measurement standards, torque specifications, break-in procedure, and how to source the right parts — all in one place.
When Does a WD615 Need an Overhaul?
No engine announces its need for an overhaul with a single dramatic symptom. Instead, deterioration manifests as a cluster of signals that individually seem minor but collectively indicate that critical tolerances have been exceeded. Recognizing these signals early — before a seizure or hydraulic lock event — is the first and most important skill of fleet engine management.
Mileage & Hour Thresholds
Under standard conditions (on-highway, proper lubrication, quality fuel), a WD615 is typically due for overhaul at:
- 600,000–800,000 km for on-highway trucks operating paved routes
- 400,000–500,000 km for vocational trucks (dump, mixer, crane carrier) with high-load cycles
- 12,000–15,000 operating hours for stationary or slow-speed applications (generators, pumps)
- Earlier — no fixed mileage when operating in high-dust environments, running low-quality fuel, or after a serious cooling/lubrication failure event
Primary Warning Signals
Excessive Oil Consumption
Consuming more than 1 liter per 1,000 km indicates worn piston rings, damaged valve stem seals, or both. Blue-gray exhaust smoke under acceleration confirms oil burning. Left unaddressed, this accelerates bore wear and contaminates the catalytic system.
Loss of Compression
Compression testing below 2.5 MPa (25 bar) in any cylinder, or a variance greater than 0.3 MPa between cylinders, signals worn rings, a damaged valve seat, or a head gasket failure. Cold starts become difficult; idle becomes rough; power output drops measurably.
Bearing Knock / Metallic Noise
A deep rhythmic knock under load points to worn main or connecting rod bearings. The WD615's 135 mm bore means even minor bearing clearance growth translates to significant dynamic loading. Oil pressure dropping below 150 kPa at idle with a hot engine is the companion indicator.
Chronic Coolant Loss / White Smoke
Persistent sweet-smelling white exhaust smoke indicates a head gasket breach. Coolant enters the combustion chamber, causing hydrostatic shock risk and progressive liner corrosion. If the coolant reservoir depletes without visible external leaks, suspect internal combustion-side ingestion.
Rising Crankcase Pressure / Blow-By
Excessive blow-by from the breather hose — visible as continuous oil mist or foam — indicates that combustion gases are passing the piston rings under compression. In early stages, this manifests as elevated crankcase pressure; in late stages, it forces oil past seals systemically.
Fuel Dilution of Engine Oil
If sampled engine oil smells of diesel or shows abnormal viscosity drop, raw fuel is entering the crankcase. This points to injector O-ring failure or, in severe cases, a cracked injector body. Diluted oil loses its load-bearing film strength, dramatically accelerating all bearing surfaces.
Run oil analysis (viscosity, TBN, wear metals) every 25,000 km on high-mileage WD615 units. Rising iron and copper levels predict bearing wear 30,000–50,000 km before audible symptoms appear — enough lead time to plan a scheduled overhaul rather than an emergency one.
Major vs. Top-End Overhaul: Choosing the Right Scope
Not every overhaul requires a full strip-down. Matching scope to condition saves cost and downtime:
- Top-End Overhaul (cylinder head, valves, head gasket, injectors): appropriate when compression loss is limited to 1–2 cylinders, oil consumption is moderate, and crankshaft/bore measurements are still within spec. Typical shop time: 16–24 hours.
- Major Overhaul (full disassembly including crankshaft, bearings, pistons, liners, and all seals): required when bore wear exceeds limits, bearing knock is present, or crankshaft journals show scoring. Typical shop time: 40–60 hours.
- Exchange Engine Program: for fleets with multiple trucks and tight schedules, maintaining a rebuilt exchange engine allows one-day swap and workshop rebuild on a planned schedule.
Pre-Overhaul Preparation: Tools, Parts & Safety
A failed overhaul is almost always a preparation failure, not a mechanical failure. The two most common causes are missing measuring instruments (leading to reassembly with out-of-spec clearances) and incomplete parts kits (causing reassembly pauses that contaminate machined surfaces). Prepare completely before the first bolt is loosened.
Required Tooling & Equipment
- Engine stand (rotating type): Essential for major overhaul. Fixed stands limit access to crankshaft and main bearing caps.
- Torque wrenches: Minimum two: 0–50 N·m (head bolt first pass) and 50–400 N·m (main bearing caps, connecting rod bolts). Angle-torque adapter required for TTY (torque-to-yield) head bolts.
- Precision measuring instruments: Inside micrometer (50–200 mm range), outside micrometer set, dial gauge with magnetic stand, feeler gauge set (0.02–1.0 mm), telescoping bore gauge.
- Compression tester: 0–4 MPa range with WD615 adapter (M14×1.5 thread).
- Valve spring compressor and valve seat cutting tool (or send head to machine shop).
- Liner puller / installer tool: WD615 wet liners must be pulled with a dedicated collar to avoid cracking. Never use improvised tools on liners.
- Engine flushing equipment: Flush the lubrication system before first-fill with new oil after reassembly.
- Clean assembly area: Dedicated tarpaulin or rolling cart. Any grit on bearing surfaces during assembly causes immediate accelerated wear. Compressed air and clean lint-free rags are essential.
Standard Parts Required (Major Overhaul)
| Component | Part Type | Qty (WD615, 6-cyl) | Notes |
|---|---|---|---|
| Piston rings set | OEM / Genuine | 6 sets | Confirm bore oversize before ordering (STD / +0.25 / +0.5) |
| Cylinder liner | OEM / Genuine | 6 pcs | Wet liner; measure O-ring groove depth on block before ordering |
| Main bearing shells (upper + lower) | OEM | 7 sets | Available in STD and -0.25 undersize |
| Connecting rod bearing shells | OEM | 6 sets | Match to crankshaft journal diameter |
| Thrust washers (crankshaft) | OEM | 2 sets | Check axial play before ordering size |
| Head gasket | Genuine preferred | 1 pc | Measure deck height for correct thickness selection |
| Valve stem seals | OEM | 24 pcs | Intake and exhaust differ — order separately |
| Cylinder head bolts | Genuine | 24 pcs | Replace all — TTY bolts are one-use |
| Front / rear crankshaft oil seals | OEM | 1 each | Viton compound recommended for hot climates |
| Water pump gasket + O-rings | OEM | 1 set | Replace as a matter of course during overhaul |
| Full engine gasket & seal kit | OEM | 1 set | Covers all minor gaskets; saves multiple small orders |
| Piston pin circlips | OEM | 12 pcs | Never reuse circlips — fatigue failure risk |
| Oil filter (new) | Quality aftermarket / OEM | 1 pc | Install new on first start |
Do not begin disassembly until all parts are physically in hand and verified. Cylinder liners in particular should be dry-fitted to confirm bore compatibility before the old ones are removed. A missing liner or incorrect piston ring size midway through an overhaul can leave an engine open — and contaminated — for days.
Safety Prerequisites
- Drain engine oil, coolant, and fuel completely. Dispose of fluids per local environmental regulations.
- Allow engine to cool to ambient temperature — never work on a hot cylinder head (thermal distortion affects measurements).
- Disconnect the battery and disable the fuel system before any disassembly.
- Use proper engine stands and stands rated for the WD615's weight (~760 kg bare block). Never work under a suspended engine.
- Label and photograph all harness connectors, hose routing, and cable positions before removal.
Step-by-Step Disassembly Procedure
The WD615's architecture — wet liners, chain-driven camshaft, and external gear-driven accessories — rewards a systematic top-down, outside-in disassembly sequence. Each sub-system has a correct order; skipping steps forces components and risks damaging precision surfaces. The sequence below covers a complete major overhaul.
Phase A: External Systems & Accessories
Remove the air intake system: Disconnect turbocharger inlet hose, air filter assembly, and intercooler piping. Cap all turbo ports immediately to prevent foreign object ingestion.
Drain and remove cooling circuit: Drain radiator, disconnect upper and lower hoses, remove the water pump (3 bolts + gasket). Note the impeller condition — replace if any corrosion pitting is visible.
Remove fuel system components: Disconnect high-pressure fuel lines at injectors (use correct crow-foot fittings — never improvise). Remove the fuel injection pump after marking the drive coupling position for reassembly reference.
Remove turbocharger: Disconnect oil feed and drain lines first. Allow the turbo to drain completely before unbolting from the exhaust manifold. Place the turbo upright on a clean surface.
Remove exhaust manifold: Soak all 12 studs with penetrating oil 24 hours in advance in high-corrosion environments. Use a six-point socket — stripped studs require drilling and re-tapping.
Remove alternator, power steering pump, and A/C compressor (if fitted). Label all drive belt routing.
Phase B: Valve Train & Cylinder Head
Remove rocker arm cover: 8 bolts, note any oil sludge or varnish buildup which indicates inadequate oil change intervals — document this for the fleet maintenance report.
Remove rocker arm assembly: Loosen the four bridge bolts evenly in a cross pattern. Keep rocker arms in order for re-installation or inspection.
Remove pushrods and lifters (tappets): Label each pushrod with its cylinder number and position (intake/exhaust). Pushrods are not interchangeable — mixing them causes valve lash errors.
Remove cylinder head bolts in reverse torque sequence: Loosen in three passes: first to 2/3 torque, then 1/3, then fully. This prevents warping the head deck. The WD615 uses a 4×6 bolt pattern — follow the official anti-clockwise spiral from center outward.
Lift cylinder head: Use a proper lifting sling on the head lifting eyes. Never pry between the head and block — any gouge on the deck surface requires resurfacing. If the head is stuck, use a rubber mallet on the exhaust ports.
Remove and inspect head gasket: Note the location and pattern of any blow-through. Photograph before discarding — the failure pattern reveals the root cause (overheating, pre-detonation, or liner protrusion error).
Phase C: Pistons, Liners & Crankshaft
De-glaze the liner tops: Before removing the pistons, use a decarb tool or a strip of 400-grit emery cloth on a rod to remove the ridge at the top of each liner. Failure to remove this ridge will tear the new piston rings on installation.
Remove connecting rod caps: Loosen in two passes. Keep the caps matched to their rods — they are line-bored as pairs. Mark with a paint marker: "1-A", "1-B" etc. if not already stamped.
Push pistons up and out through the top of the liners: Protect the crankshaft journals with clean rag during this step. Do not allow the connecting rod bolts to contact the crankshaft.
Extract wet liners: Use the dedicated WD615 liner puller tool. The liners seat on precision O-rings at the bottom of the bore; pulling by hand risks cracking the liner or scoring the block bore. Note: measure liner protrusion before extraction for the reassembly record.
Remove main bearing caps: Loosen in three passes from outer to inner. Number each cap and mark the orientation (they are directional). Remove the lower bearing shells and keep them organized.
Lift crankshaft: Requires two people or a dedicated crankshaft lifting bracket. Support at both ends. Place on padded V-blocks for inspection and measurement.
Remove upper main bearing shells and thrust washers from the block. Inspect all bearing surfaces for scoring, embedded debris, or wiping — these findings indicate lubrication failure history.
Keep all old bearing shells in order on a labelled piece of cardboard. Bearing failure patterns — edge loading, midspan fatigue, overlay wipe — each indicate specific operational or assembly causes. This analysis prevents the same failure on the rebuilt engine.
Inspection & Measurement Standards
Precise measurement is what separates a successful overhaul from a truck that burns oil again in 80,000 km. Every critical component must be measured and compared against specification before the rebuild decision — machine or replace — is made. The WD615 service manual specifies the following tolerances:
Cylinder Bore Inspection
Measure each bore at three heights (10 mm below top, mid-stroke, 10 mm above BDC) and two orientations (parallel and perpendicular to crankshaft axis). Record the maximum diameter at each point.
| Parameter | Standard Size | Wear Limit | Action if Exceeded |
|---|---|---|---|
| Cylinder bore diameter (STD) | 135.000–135.030 mm | 135.200 mm | Replace liner + piston |
| Bore out-of-round | ≤ 0.025 mm | 0.050 mm | Hone if ≤0.05; replace if greater |
| Bore taper (top to bottom) | ≤ 0.025 mm | 0.050 mm | Hone; replace if >0.05 |
| Liner protrusion above block deck | 0.04–0.10 mm | Outside range | Shim or replace liner |
| Liner O-ring groove diameter | Per block grade | No damage | Replace block if grooves are damaged |
Crankshaft Journal Inspection
| Parameter | Standard Size | Min. Regrind Limit | Undersize Available |
|---|---|---|---|
| Main journal diameter | 99.982–100.000 mm | 99.500 mm | -0.25 / -0.50 mm |
| Connecting rod journal diameter | 79.982–80.000 mm | 79.500 mm | -0.25 / -0.50 mm |
| Journal out-of-round | ≤ 0.010 mm | 0.025 mm | Regrind and use undersize bearings |
| Journal taper | ≤ 0.010 mm | 0.020 mm | Regrind if exceeded |
| Crankshaft axial play | 0.10–0.28 mm | 0.40 mm | Replace thrust washers |
Cylinder Head Inspection
| Parameter | Specification | Action if Exceeded |
|---|---|---|
| Head deck flatness | ≤ 0.05 mm over full length | Resurface if 0.05–0.2 mm; replace if >0.2 mm |
| Minimum head height after resurfacing | ≥ 119.60 mm (STD: 120.00 mm) | Replace head if below minimum |
| Valve seat recession (intake) | 0.8–1.2 mm | Re-cut seat; replace if seat insert is loose |
| Valve seat recession (exhaust) | 1.0–1.4 mm | Re-cut or replace seat insert |
| Valve stem diameter (intake) | 9.960–9.975 mm | Replace valve if worn beyond limit |
| Valve guide clearance (intake) | 0.025–0.060 mm | Replace guide if >0.10 mm |
| Valve spring free length | 63.0 mm | Replace if < 61.0 mm |
| Valve spring squareness | ≤ 2° | Replace spring |
Piston & Piston Ring Inspection
| Parameter | Specification | Wear Limit |
|---|---|---|
| Piston diameter (at skirt, 90° to pin) | 134.900–134.940 mm | 134.700 mm |
| Piston-to-bore clearance | 0.060–0.100 mm | 0.200 mm |
| Top ring gap (in bore) | 0.30–0.50 mm | 1.50 mm |
| Second ring gap (in bore) | 0.25–0.45 mm | 1.20 mm |
| Oil control ring gap (in bore) | 0.20–0.70 mm | 1.50 mm |
| Top ring groove width | 3.000–3.030 mm | 3.150 mm |
| Piston pin bore diameter | 45.000–45.016 mm | 45.050 mm |
| Piston pin-to-bore clearance | 0.000–0.016 mm | 0.040 mm |
Experienced mechanics sometimes skip measurement on "obviously good" components. This is the single most common cause of a failed overhaul requiring redo within 50,000 km. Measurement takes 2–3 hours. An undetected out-of-spec liner or bearing can destroy a reassembled engine within 5,000 km.
Reassembly & Critical Torque Specifications
Reassembly proceeds in reverse of disassembly, but with additional precision requirements. Cleanliness is paramount — a single metal chip in an oil gallery can wipe a bearing within hours of first start. Lubricate all bearing surfaces with clean engine oil during assembly; do not use assembly compounds unless specifically called for.
Reassembly Sequence Overview
Clean and inspect all oil galleries: Flush block oil galleries with solvent, blow dry with compressed air. Confirm all gallery plugs are in place and sealed. This step is non-negotiable.
Install new liner O-rings dry, then wet the liner exterior with clean engine oil: Insert liners with a rotational press-in motion. Measure protrusion after installation — must be 0.04–0.10 mm above the deck.
Install upper main bearing shells: Ensure the oil holes in the shells align with the block oil galleries. Never touch the bearing surface with bare hands — finger oils cause hot-spot corrosion.
Lower crankshaft onto main bearings: Oil all journals first. Install thrust washers with the oil groove side facing outward (toward crankshaft web).
Install main bearing caps with lower shells: Torque in three passes using the sequence specified in the torque table below. Verify crankshaft rotates smoothly with only hand pressure after each cap is torqued.
Assemble pistons to connecting rods: Ensure piston pin circlips are fully seated in both grooves. Stagger ring gaps at 120° intervals; top ring gap must not align with pin bore or thrust face.
Install pistons into liners using ring compressor: Oil liner walls generously. Ensure the arrow or "FRONT" mark on the piston crown faces the front of the engine. The connecting rod big-end oil hole must face the camshaft side.
Install connecting rod caps: Match caps to their rods. Torque per specification below.
Install new head gasket without sealant: Verify the correct thickness for the measured deck height. Ensure all coolant and oil holes align.
Lower cylinder head onto block using guide studs (M12×1.75 threaded guides in outer bolt holes): Never slide the head across the gasket. Replace all head bolts — these are single-use TTY fasteners.
Torque head bolts in the official sequence: Four-pass procedure (see table below). Precision is critical — undertorque causes gasket blow; overtorque can crack the head.
Install valve train: Verify pushrod seating in lifter cups. Torque rocker bridge bolts to specification. Set valve clearance cold before installing rocker cover.
Critical Torque Specifications
| Fastener | Pass 1 | Pass 2 | Pass 3 | Pass 4 | Notes |
|---|---|---|---|---|---|
| Cylinder head bolts (M14) | 80 N·m | 150 N·m | 220 N·m | +90° angle | Spiral from center outward. Use new bolts only. |
| Main bearing cap bolts (M16) | 60 N·m | 180 N·m | 280 N·m | — | Torque inner caps first, then work outward. |
| Connecting rod cap bolts (M12) | 40 N·m | 80 N·m | +60° angle | — | Replace if any bolt shows necking at thread runout. |
| Flywheel bolts (M16) | 80 N·m | 220 N·m | — | — | Apply Loctite 243. Stake-lock if fitted. |
| Rocker bridge bolts (M10) | 25 N·m | 45 N·m | — | — | Torque evenly across all four bolts per bridge. |
| Exhaust manifold studs (M10) | 25 N·m | 50 N·m | — | — | Anti-seize compound on stud threads. Replace if any stud stretched. |
| Injector hold-down nuts (M8) | 10 N·m | 25 N·m | — | — | Use new copper sealing washers under injector tip. |
| Oil drain plug (M22) | — | 80 N·m | — | — | Use new crush washer. |
Valve Clearance Settings (Cold)
| Valve | Cold Clearance | Check With |
|---|---|---|
| Intake valves (all cylinders) | 0.30 mm ± 0.05 mm | Feeler gauge, engine cold (<40°C) |
| Exhaust valves (all cylinders) | 0.40 mm ± 0.05 mm | Feeler gauge, engine cold (<40°C) |
Use clean 15W-40 engine oil on all bearing shells, cylinder walls, and piston skirts during assembly. Use Loctite 243 (medium strength) on flywheel bolts and timing gear retaining bolts. Use anti-seize compound on exhaust manifold studs only — never on head bolts, bearing cap bolts, or rod bolts where torque precision is required.
Break-In Procedure & Post-Overhaul Checklist
A freshly rebuilt WD615 is mechanically correct but not yet fully broken in. New piston rings, bearing surfaces, and valve seats need a controlled seating period to establish optimal surface contact patterns. Skipping or shortening the break-in procedure is the single most preventable cause of premature ring blow-by and bearing failure on rebuilt engines.
Pre-Start Checks (Before First Crank)
- Oil: Fill to max mark on dipstick with fresh 15W-40 (or 10W-40 for tropical climates). Prime the oil system by cranking on the starter with the fuel system disabled until oil pressure light extinguishes (typically 10–15 seconds).
- Coolant: Fill the cooling system with premixed coolant. Bleed air from the system by running the heater valve open during fill.
- Fuel system: Bleed the high-pressure fuel pump and all injector lines per the HOWO service procedure. Confirm no air in the high-pressure circuit.
- Turbocharger oil feed: Squirt clean engine oil into the turbo oil inlet before first start to prevent dry startup damage to the turbo bearings.
- Check all hoses, clamps, and connections are secure. Visually confirm no tools, rags, or components remain near belts or the flywheel.
- Confirm valve cover is installed and torqued, all drain plugs in place, and no loose fasteners visible anywhere on the engine.
Break-In Schedule
| Phase | Duration | RPM / Load Limit | Key Actions |
|---|---|---|---|
| Phase 1: Initial warm-up | 30 minutes | Idle (600–700 RPM) | Monitor oil pressure (min. 250 kPa), coolant temp, and listen for any abnormal noises. Check all joints for leaks. Do NOT rev the engine during this phase. |
| Phase 2: Light load running | 0–500 km | Max 1,400 RPM / 50% load | No full-throttle, no high-RPM, no prolonged idling. Vary speed constantly. Check oil level every 100 km. First oil and filter change at 500 km — metallic particles from ring seating must be removed. |
| Phase 3: Progressive loading | 500–2,000 km | Max 1,800 RPM / 70% load | Gradually increase load and RPM. Avoid sustained high-RPM above 2,000. Second oil and filter change at 2,000 km. |
| Phase 4: Full operation | After 2,000 km | Full rated operation | Resume normal fleet duty cycles. Third oil change at 5,000 km. From this point, normal 15,000–20,000 km change intervals may resume. |
The 500 km break-in oil change is not optional. During ring seating, metallic microparticles enter the oil in concentrations that can cause abrasive damage if left in the system. Many re-overhaul cases that occur at 30,000–50,000 km after a rebuild trace back directly to a skipped 500 km oil change.
Post-Overhaul Inspection Checklist (at 500 km)
- Retorque cylinder head bolts to specification after first heat cycle (hot torque check at 500 km is standard SINOTRUK procedure for the WD615).
- Recheck valve clearances — valve seats and pushrod geometry settle during initial running.
- Drain and replace engine oil and filter — analyze drained oil for abnormal metallic content.
- Perform compression test — all cylinders should now measure within spec (2.8–3.2 MPa). If any cylinder is still low, re-evaluate valve seating.
- Inspect all external seals and gaskets for weeping or active leaks.
- Check turbocharger boost pressure and listen for any wastegate or impeller noise.
- Verify oil pressure at operating temperature — should be above 250 kPa at idle, 350–500 kPa at rated speed.
- Re-check fuel injection timing if the injection pump was removed — incorrect timing causes detonation and head gasket stress.
- Recheck all hose clamps and coolant connections for heat-cycle loosening.
Sourcing WD615 Overhaul Parts: Quality Tiers Explained
The quality of parts used in a WD615 overhaul directly determines how long the rebuilt engine will last. Choosing the wrong supplier — especially for liners, pistons, and bearings — can cut service life by 60% or more. Here is how to navigate the three-tier supply structure that exists in every major export market:
Manufactured by SINOTRUK Group or authorized OEM suppliers (MAHLE, Federal-Mogul, Dongfeng-authorized). Full traceability, stamped part numbers, factory QC. Best choice for liners, piston assemblies, and bearing kits on high-value or high-utilization trucks. 15–25% premium over OEM equivalents.
Made by established Chinese component manufacturers (e.g., Chengdu Huachuan, Shandong suppliers) to SINOTRUK specifications, but sold under their own brand. Meets dimensional and metallurgical specs. Recommended for fleets managing cost-to-performance balance. Archer Parts' primary offering for most export markets.
Low-cost parts with no traceable specification compliance. Ring-gap tolerances, liner hardness, and bearing overlay thickness often fall outside WD615 spec. May appear visually identical. Short-term savings are typically eliminated by reduced overhaul interval. Not recommended for critical engine components.
JINAN ARCHER TRADE CO.,LTD supplies WD615 overhaul components — including complete overhaul kits, individual piston assemblies, liner kits, main and rod bearing sets, and full gasket kits — to fleet workshops and distributors worldwide. All shipments include high-resolution QC inspection photos and videos before dispatch. Contact us with your specific part numbers or engine serial for a formal quotation.
Frequently Asked Questions
Archer Parts supplies genuine SINOTRUK and quality OEM WD615 components to fleet workshops and distributors across Africa, the Middle East, Latin America, and Southeast Asia. Send us your part numbers or engine serial — we respond with a formal quotation within 24 hours.