Yanmar 129508-11250 Engine Rocker Arm Shaft

Description:

The Yanmar 129508-11250 rocker arm shaft is a genuine OEM valve train component designed for Yanmar 4TNV84T-XWA (129508-01560), 4JH4-HTE, and 4JH4-TE diesel engines. It is responsible for supporting and aligning the rocker arm assembly to ensure proper valve actuation, valve timing operation, and stable engine performance. This rocker arm shaft is commonly installed in Yanmar marine engines, industrial diesel engines, generators, construction equipment, and agricultural machinery requiring reliable OEM valve train components and long-term engine durability.

Applications:

The 129508-11250 rocker arm shaft is widely used in Yanmar marine propulsion systems, industrial diesel engines, compact construction equipment, generators, and agricultural machinery powered by 4TNV84T and 4JH4 series engines. It functions as a valve train support shaft that maintains rocker arm alignment and transfers camshaft motion to the engine valves for efficient combustion and reliable engine operation.

Technical Specifications:

• Manufacturer: Yanmar
• Part Number: 129508-11250
• Product Type: Engine Rocker Arm Shaft
• Function: Rocker arm support and valve train operation
• Compatible Engines: 4TNV84T-XWA, 4JH4-HTE, 4JH4-TE
• Application: Marine, industrial, agricultural, and construction diesel engines
• Installation: Cylinder head valve train assembly
• Engine Type: Diesel
• System Role: Valve actuation and rocker arm alignment
• Construction: Precision-machined hardened steel shaft
• Compatibility: Yanmar OEM diesel engine platforms
• Application Environment: Heavy-duty diesel engine operation
• Condition Availability: New OEM, surplus, rebuilt, and replacement inventory available
• Status: OEM diesel engine valve train component

Common Replacements:

• Yanmar 129508-11241 Rocker Shaft Assembly
• Yanmar 123907-11250 Rocker Arm Shaft
• Yanmar 129907-11250 Rocker Arm Shaft