ZF 5838.300.225 LUBRICATION TUBE | OEM Genuine Part

Overview

The ZF 5838.300.225 LUBRICATION TUBE is a precision-engineered OEM genuine component responsible for directing pressurized oil to critical bearing and gear interfaces within the transmission sump. This hardened steel tube ensures consistent fluid delivery to the 5838022003 REAR AXLE assembly and the 5838109001 DIFFERENTIAL unit, preventing metal-on-metal contact during high-torque operations. As a factory-spec replacement for construction machinery transmissions, the SKU 5838.300.225 is machined to exact OEM tolerances to maintain proper oil gallery pressure and flow volume.

Symptoms of Failure

• Visible oil seepage at the tube junction: Cracks or loose fittings in the 5838.300.225 tube cause transmission fluid to drip onto the bell housing, often mistaken for a main seal leak.
• Intermittent gear engagement hesitation: Insufficient lubrication to the 0750117075 TAPER ROLLER BEARING leads to momentary slipping when shifting under load.
• Elevated operating temperature warnings: A blocked or deformed tube restricts oil flow, causing localized hot spots near the 5838300128 DIFFERENTIAL HOUSING.
• Metallic debris in the oil filter: Starved bearings shed microscopic particles, detectable during routine maintenance inspections.

Technical Specifications

Compatibility

This lubrication tube is engineered for ZF WG-series powershift transmissions commonly used in wheel loaders and graders. It directly fits the WG180, WG200, and WG210 models. The 5838.300.225 also serves as a direct replacement in certain ZF 4WG-200 and 6WG-200 variants where the oil circuit routes through the differential housing. Always verify the tube length against your existing part before installation.

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