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Yuchai YC6G260N Engine Truck Spare Parts G6A00-1011100A Repair Kit Engine Oil Pump for YUTONG Bus Parts

Yuchai YC6G260N Engine Truck Spare Parts G6A00-1011100A Repair Kit Engine Oil Pump for YUTONG Bus Parts

The G6A00-1011100A Engine Oil Pump Assembly is an original equipment (OE) external gear-type oil pump specifically engineered for Yuchai YC6A and YC6J series 6-cylinder diesel engines. As the "heart" of the engine’s lubrication system, it ensures reliable pressurization and circulation of engine oil to critical friction points—including main bearings, camshaft journals, turbocharger, valve train, and piston cooling nozzles.

Constructed from high-strength gray cast iron housing and equipped with hardened alloy steel gears, this robust pump delivers consistent oil pressure across all operating conditions—from cold start-up to high-load continuous operation. It features a built-in precision relief valve (pressure regulator) that prevents over-pressure conditions which could damage the oil filter or seals.

Widely used in buses, trucks, and construction machinery, this oil pump plays a vital role in reducing wear during engine startup and maintaining long-term reliability under extreme thermal and mechanical stress.

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Model:
G6A00-1011100A
Brand:
Yutong Bus Parts

Product Description

Attribute	Description
Part Number (OE)	G6A00-1011100A / G6A001011100A
Product Name	Engine Oil Pump Assembly
Common Names	Lube Oil Pump, Gear-Type Oil Pump
Application Engine	Yuchai YC6A, YC6J Series (6-Cylinder Diesel)
Pump Type	External Meshing Gear Pump
Housing Material	High-Strength Gray Cast Iron
Gear Material	Hardened Alloy Steel (High-Frequency Quenched)
Drive Method	Gear-driven (powered via crankshaft through intermediate idler gear)
Pressure Regulation	Integrated Relief Valve (Overflow Valve)
Design Standard	Meets GB/T 19055, ISO 21631, and Yuchai OE specifications

Parameter	Specification
Rated Oil Pressure (Idle)	≥0.15 MPa at 800 rpm
Operating Oil Pressure (Rated Speed)	0.35 – 0.55 MPa (within safe working range)
Maximum Flow Rate	~75–90 L/min (at 2,500 rpm)
Relief Valve Cracking Pressure	Typically set at ~0.6 MPa (opens to prevent overpressure)
Inlet/Outlet Diameter	Standard SAE or JIS ports; compatible with OEM oil pan and block passages
Mounting Interface	Bolt-on flange with precise alignment dowels
Weight (Approx.)	4.2 – 5.0 kg
Service Life	6–8 years or 600,000 km under normal operation