Komatsu S6D125-2 Cylinder Head Assembly for Diesel Engine Replacement

The Komatsu S6D125-2 Cylinder Head Assembly is a high-quality aftermarket replacement designed for diesel engine repair, rebuilding, and overhaul applications. Manufactured with precision machining technology and durable materials, this complete cylinder head assembly provides reliable sealing performance, efficient combustion, and long service life under heavy-duty working conditions.

Designed for Komatsu S6D125-2 diesel engines, this cylinder head assembly is widely used in excavators, bulldozers, wheel loaders, and other construction machinery. It is an ideal replacement solution for cracked, damaged, or worn cylinder heads, helping restore engine performance and reduce equipment downtime. The S6D125-2 engine is commonly associated with Komatsu heavy equipment applications such as PC400 series excavators.

Reference Part Numbers

• 6151-12-1101
• 6151-12-1102
• 6151-12-1100

These OEM part numbers are commonly referenced for Komatsu 6D125 / S6D125-2 cylinder head applications. Please verify your engine serial number, machine model, or original part number before ordering to ensure compatibility.

Related Engine Parts Available

In addition to cylinder head assemblies, NUK also supplies a full range of high-quality aftermarket diesel engine replacement parts for engine repair, overhaul, and rebuilding projects.

Our product range includes:

• Pistons
• Piston Rings
• Cylinder Liners
• Sleeve Kits
• Full Gasket Kits
• Cylinder Head Gaskets
• Main Bearings
• Connecting Rod Bearings
• Crankshaft Bearings
• Camshaft Bushings
• Connecting Rod Bushings
• Fuel Injectors
• Injector Nozzles
• Fuel Injection Pumps
• Feed Pumps
• Thermostats
• Cylinder Heads
• Cylinder Blocks
• Intake Valves
• Exhaust Valves
• Push Rods
• Tappets
• Valve Springs
• Cylinder Head Bolts
• Flywheels
• Crankshaft Gears
• Idle Gears
• Timing Gears
• Camshaft Gears
• Starter Motors
• Alternators
• Turbochargers
• Water Pumps
• Oil Pumps
• Connecting Rods
• Camshafts
• Oil Coolers
• Rocker Arms
• Valve Guides
• Valve Seats

We supply high-quality aftermarket engine parts compatible with Kubota, Cumminss, CAT , Perkins, Yanmar, Isuzu, Komatsu, Mitsubishi, Hino, Nissan, Volvoo, Deutz, Doosan, Daewoo, John Deeree, Scania, Hyundai, JCB, and many other diesel engine brands.

Whether you need individual engine components or complete engine rebuild solutions, NUK provides reliable replacement parts for construction machinery, agricultural equipment, trucks, generator sets, industrial engines, and heavy-duty applications.

FAQ

Q1: What engine does this Komatsu S6D125-2 cylinder head fit?

This cylinder head assembly is designed for Komatsu S6D125-2 diesel engines and related 6D125 engine applications. Please provide your engine serial number or original part number to confirm compatibility.

Q2: Is this a complete cylinder head assembly?

Yes. The assembly can be supplied with valves, valve guides, valve seats, valve springs, and related components depending on the configuration.

Q3: What machines use the Komatsu S6D125-2 engine?

The S6D125-2 engine is commonly used in Komatsu heavy equipment, including excavators and other construction machinery applications.

Q4: Is this an OEM cylinder head?

This is a high-quality aftermarket replacement manufactured to provide reliable fit, performance, and durability.

Q5: Do you supply other Komatsu S6D125-2 engine parts?

Yes. We supplies Komatsu S6D125-2 engine parts including cylinder blocks, crankshafts, pistons, cylinder liners, overhaul kits, gasket kits, injectors, fuel injection pumps, oil pumps, water pumps, turbochargers, and other diesel engine components.

Keywords

Komatsu S6D125-2 Cylinder Head Assembly
Komatsu 6D125 Cylinder Head
S6D125-2 Engine Cylinder Head
Komatsu Excavator Cylinder Head
S6D125 Diesel Engine Parts
Komatsu S6D125 Engine Parts
6D125 Cylinder Head Replacement
Aftermarket Komatsu Engine Parts
Komatsu Construction Machinery Parts
S6D125-2 Replacement Parts