Camshaft 6137-41-1120 for Komatsu 6D108 7.2L engines. Fits PC300-5, WA380-3, and GD655A. CNC ground, HRC 52-58 lobes. OEM quality wholesale rates
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CNC ground precision camshaft for Komatsu 6D108, S6D108, and SA6D108 engines.
Features micropolished journals and HRC 52-58 hardened lobes to prevent premature camshaft lobe wear in heavy earthmovers.
OEM: 6137-41-1120 | Cross-reference: 6137-41-1121, 6137-41-1110. Fits Komatsu PC300-5 and WA380-3 fleets.
OEM quality wholesale rates.
The Komatsu 6D108 engine platform is a robust 7.2L inline-6 diesel powerplant (7,150 cc) widely utilized across PC300-3, PC300-5, and PC300LC-5 hydraulic excavators, WA380-3 wheel loaders, and GD655A motor graders. At the mechanical core of this high-torque overhead-valve (OHV) pushrod system is the precision-engineered Komatsu 6D108 camshaft (OEM 6137-41-1120, cross-reference 6137-41-1121, 6137-41-1110, 6137411120), which regulates critical valve timing and duration. To meet the demanding performance requirements of heavy excavators and graders, each 6D108 camshaft assembly is machined to strict standards. Under continuous high-load mining and quarrying environments, issues such as camshaft lobe wear or bearing oil film breakdown can degrade engine volumetric efficiency. To eliminate these premature failures, our premium camshafts undergo precision CNC ground camshaft processing and specialized micropolished camshaft finishing. This treatment optimizes hydrodynamic oil film retention and minimizes friction with solid lifters. It is a vital component for high-stress projects, serving as a dependable PC300 camshaft, WA380 camshaft, and GD655A camshaft upgrade. Each S6D108 or SA6D108 camshaft features induction-hardened lobes with an elite HRC 52-58 camshaft hardness, ensuring exceptional wear resistance on all Komatsu 6D108 engine parts rebuilds.
| Parameter | Value |
|---|---|
| Engine Code | Komatsu 6D108 / S6D108 / SA6D108 (7.15L) |
| Configuration | Inline-6 Cylinders, 12 Valves SOHC OHV |
| Engine Cylinder Bore | 108.0 mm |
| Valve Clearance (Cold) | Intake: 0.30 mm | Exhaust: 0.60 mm |
| Camshaft Thrust Play | 0.050 – 0.220 mm (Wear Limit: 0.30 mm) |
| Timing Gear Backlash | 0.030 – 0.120 mm |
| Material Spec | Premium Chilled Cast Iron / Forged Steel (HRC 52-58 camshaft) |
| Hardness Treatment | Induction Hardened Lobes (HRC 52-58) |
| Primary OEM Number | 6137-41-1120 |
| Interchange References | 6137-41-1121, 6137-41-1110, 6137411120 |
Our Komatsu engine components catalog covers the full light-duty and heavy-duty inline families, from the 2.8L 4D94E and 3.3L S4D95 to the massive 11.0L SAA6D125 and 15.2L S6D155 lines. Explore our complete range of Komatsu diesel engine parts by visiting our Komatsu Brand Hub or browse other specialized brands in our main Komatsu Camshaft Category.
6137-41-1120, 6137411120 Part, 6D108 Camshaft Assy, Komatsu 6D108 Camshaft, PC300-5 Cam
| Turbo Model | Key OEM / Part No. | Application | Engine |
|---|---|---|---|
| TD04L-13T | 49377-02600 14411-7T600 | Nissan Navara, Frontier D22 | QD32, QD32T (3.2L Diesel) |
| RHF4-1W | 14411-VK500 14411-VK50B VN3 | Nissan Navara, X-Trail, Frontier | YD25DDTi (D22, Non-Common Rail) |
| GT1752S | 14411-VB300 14411-VB301 701196-5007S | Nissan Patrol GR, Safari Y61 | RD28Ti (2.8L Turbo Intercooler) |
| GT2052V(Water Cooled) | 14411-2X900 14411-VC100 724639-5006S | Nissan Patrol Y61, Terrano II | ZD30DDTi (3.0L DI) |
| GT2056V/14411-EB70A | 14411-EB70A / EB70C 14411-EC00B 769708-5004S | Nissan Navara D40, Pathfinder R51 | YD25DDTi (2.5L 174HP) |
| TA4507 | 14201-96563 466314-5006S | Nissan UD Truck, Construction | PF6T, PE6 |
| TB2527/14411-7F400 | 14411-7F400 452162-5001S | Nissan Terrano II, Ford Maverick | TD27TDi (2.7L) |
| TB2527 /(RD28T) | 14411-22J00 / 14411-22J01 465941-5005S / 465941-0005 | Nissan Patrol Y60 | RD28T (2.8L) |
| RHC6 | 14201-Z5613 VA240096 | Nissan UD Truck CMF88 | FE6T (A500) |
| KP35 | 14411-BN700 5435-988-0002 8200022735 | Nissan Almera, Micra, Renault Clio | K9K (1.5 dCi) |
| GT2056V/14411-EB300 (Thai Built) | 14411-EB300 751243-5002S | Nissan Navara D40, Pathfinder R51 | YD25DDTi (QW25) |
| TBP4 | 14201-Z5715 702732-0001 | Nissan UD Trucks | FE6T, PE6T |
| TB4144 | 14201-95010 466573-0001 | Nissan UD Various Trucks | NF6T |
| GT3576DL | 14411-9S000 704407-5007S | Nissan UD Trucks (LK, MK, PK) | FE6TA, MD92 (Intercooled) |
| HT12-19B/D | 14411-9S000 047-282 | Nissan Navara D22, Frontier | ZD30 EFI (Non-Intercooled) |
| JP50B | DK4A-1118010 | Nissan Truck (Chinese Market) | ZD25 |
| HT18-5 | 14411-62T00 047-263 | Nissan Patrol Y60/Y61, Civilian W40 | TD42T (4.2L Diesel) |
| RHF4H | 14411-VM01A 14411-MB40B VN4 | Nissan Cabstar, Navara D22 | YD25DDTi (Common Rail 110-130HP) |
| TB2580 | 14411-G2401 703605-0003 | Nissan Cabstar, Terrano TL18 | TD27T |
| TB25W | 14411-22J00 465941-5005S | Nissan Patrol Y60, Safari | RD28T (2.8L Diesel) |
| TB2557 | 14411-G2401 452047-5001S | Nissan Terrano II, Ford Maverick | TD27T (R20) |
| T28 | 14411-AA110 | Nissan Skyline | RB25DET |
| TB25 | 14411-5C902 466941-0002 | Nissan Largo, Vanette | CD20ETi |
| BV45 | 14411-5X01B 5303-988-0337 | Nissan Navara D40, Pathfinder | YD25DDTi (2.5 dCi 190HP High Power) |
| TA5103 | 14201-96607 466242-0016 | Nissan UD Truck | PF6TA |
| GT4294S | 14201-NB004 | Nissan UD Truck | PF6TC |
| TB2505 | 471024-5001S | Nissan UD Truck | FD46T |
| TO4B93 | 14201-Z5579 465254-0002 | Nissan Truck | FD6T |
| BV40 | 14411-3XN3A 5303-988-0268 | Nissan NV350 Urvan, Caravan | YD25DDTi (E26) |
| BV39 | 14411-00Q0F 5439-988-0070 | Nissan Qashqai | K9K (1.5 dCi Euro 4) |
| K03 | 14411-00Q0E 5303-988-0055 | Nissan Interstar | G9U (2.5 dCi) |
Komatsu camshafts fit heavy machinery including Komatsu PC300-5 Excavator, Komatsu PC300-6 Excavator, Komatsu WA380-3 Wheel Loader, and Komatsu GD655A Motor Grader.
Contact us for complete application coverage.
| Make | Machine / Vehicle Model | Year Range | Engine Code | Camshaft OEM |
|---|---|---|---|---|
| Komatsu | PC300-3 / PC300-5 / PC300-5L Excavator (PC300 camshaft) | 1990–1998 | 6D108 / S6D108 | 6137-41-1120 |
| Komatsu | WA380-3 / WA380-3-A Wheel Loader (WA380 camshaft) | 1996–2003 | SAA6D108E | 6137-41-1120 |
| Komatsu | GD655A-3 Motor Grader (GD655A camshaft) | 1998–2005 | SAA6D108E | 6137-41-1120 |
| Komatsu | PW210-1 Wheeled Excavator | 1994–2001 | S6D108 Inline-6 | 6137-41-1120 |
Symptom: Instant engine misfire, oil seal leak, or valve-to-piston contact during reassembly. (SA6D108 camshaft)
Diagnosis: Naturally aspirated and turbocharged S6D108 engines share the same structural block and camshaft journal profiles, making the 6137-41-1120 casting compatible across both variants.
Solution: Yes, it is fully compatible. Always verify that you are using a premium, centrifugally-cast sleeve rated for camshaft applications to prevent premature thermal fatigue.
Symptom: Loose timing gear connection, rattling sounds from the gear train, or sheared woodruff keys during high-vibration operations. (camshaft timing gear)
Diagnosis: The camshaft timing gear must be securely pressed and keyed onto the shaft flange to prevent timing slip under heavy load torsional vibrations.
Solution: We supply both bare camshafts and complete camshaft-and-driving-gear assemblies. If transferring your old gear, always inspect the keyway for cracks and use a hydraulic press to achieve a standard press-fit clearance.
Symptom: Metallic ticking sounds from the valve cover, progressive engine timing lag, and a rapid drop in engine lift power under load. (camshaft lobe wear)
Diagnosis: Extreme valve spring pressures combined with degraded or contaminated lubricating oil break down the hydrodynamic film between the cam lobes and solid lifters. This causes direct metal-to-metal contact, resulting in progressive spalling and lobe flattening.
Solution: Replace the compromised shaft with our high-nickel chilled cast iron camshaft (HRC 52-58 lobes) and always install a new set of solid tappets/followers during overhaul.
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Custom Camshaft manufacturing available based on samples or drawings. OEM quality wholesale rates.
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