Gear Chamber and Gear Chamber Cover for Truck Diesel Engines X10000789 D25TCIE-050003

Gear Chamber and Cover for Truck Diesel Engine X10000789 D25TCIE

The timing gear chamber is a cast aluminum or cast iron housing mounted on the front of the engine block that encloses the camshaft drive gears, injection pump drive gears, and timing chain or belt assembly. Part numbers X10000789 and D25TCIE-050003 identify the OEM-specified gear chamber and cover for the D25TCIE series 2.5L diesel engine — a modern common-rail powerplant used in light trucks, commercial vehicles, and industrial equipment applications. A cracked, warped, or leaking gear chamber causes engine oil leaks at the front cover, timing gear misalignment, gear noise, and loss of proper camshaft and injection pump timing.

The gear chamber housing is die-cast or sand-cast from aluminum alloy or gray cast iron, then precision-machined on all mounting faces, bearing bores, and gasket surfaces for proper alignment of the complete gear train. The front cover includes the crankshaft front oil seal bore and may incorporate the engine oil pump mounting provision. All bolt hole locations match OEM specifications for direct fitment without modification. The gasket surface is machined flat to ensure leak-free sealing with the engine block and front cover.

This gear chamber and cover assembly is specified for the D25TCIE 2.5L common-rail diesel engine and fits Yunnei-powered light trucks, pickups, and industrial equipment platforms. For engine overhaul and timing gear replacement, the gear chamber should be inspected for cracks and gasket surface flatness — replacement of the complete chamber assembly is recommended whenever timing cover oil leaks are detected after gasket replacement. Installation requires proper gasket sealant application, bolt torque sequencing according to OEM specifications, and front crankshaft seal replacement.

Kingstream supplies OEM-grade engine components with dimensional inspection and material certification. Browse our forklift engine parts for gear chambers, timing covers, oil pans, cylinder heads, and complete engine assemblies. For technical specifications and volume pricing, contact our sales team. Worldwide shipping available.

Technical Specifications

• Part Numbers: X10000789 / D25TCIE-050003
• Product Type: Timing Gear Chamber and Front Cover
• Engine: D25TCIE / Yunnei 2.5L Common-Rail Diesel
• Material: Cast aluminum alloy / cast iron
• Application: Engine front timing gear enclosure and oil seal housing

Compatible Applications

Stop oil leaks and restore proper timing gear alignment. This timing gear chamber and cover ships from stock with quality certification. Worldwide delivery from Kingstream.