ZF 6057.018.334 for WG160 | OEM Genuine Part

Overview

The ZF 6057.018.334 is a precision-engineered OEM genuine component specifically designed for the WG 160 series transmission. This part functions as a critical sealing and alignment element within the gearbox assembly, ensuring that hydraulic pressure is maintained and that rotating components operate without excessive vibration. As a direct replacement for the SKU 6057.018.334, this part is essential for restoring factory-spec performance in heavy-duty ZF drivelines. It sits in the intermediate housing section, bridging the main casing and the rear gear cluster to prevent fluid migration and mechanical wear.

Symptoms of Failure

When the ZF 6057.018.334 begins to degrade, operators often notice oil leaks around the transmission bell housing after extended operation. A second common symptom is erratic gear engagement or delayed shifting, which occurs when internal pressure drops due to a compromised seal. Technicians may also detect unusual whining or grinding noises from the center of the transmission, indicating that the part has allowed debris into the bearing race. Finally, visible metal particles in the transmission fluid suggest that this component has failed and is causing secondary wear to surrounding assemblies.

Technical Specifications

Parameter	Specification
OEM Part Number	6057.018.334
Material	Hardened Steel / Nitrile Rubber Composite
Outer Diameter	145 mm
Inner Diameter	85 mm
Thickness	12 mm
Weight	0.85 kg
OEM Reference	ZF 6057.018.334 (Genuine)

Compatibility

This part is primarily engineered for the ZF WG 160 series transmission, but it also shares mounting dimensions with the WG 180 and WG 200 series. It is commonly used in municipal buses, construction loaders, and medium-duty trucks. Always verify your transmission model number before installation, as variations exist between early and late production runs.

Installation Context

During a rebuild of the WG 160, this component is installed directly against the TRANSMISSION HOUSING (4656101057). It works in conjunction with the HOUS.FRONT SECT (4656201075) to create a sealed cavity for the oil pump. The rear interface mates with the HOUSING REAR PART (4656201078) and the HOUSING REAR SECTION (4656298050) to ensure concentric alignment of the output shaft. Proper torque on the fasteners is critical to avoid distortion.

Related Components

Part Number	Name	Function
4656101057	TRANSMISSION HOUSING	Main structural casing for gear cluster
4656201075	HOUS.FRONT SECT	Front section housing for input shaft
4656201078	HOUSING REAR PART	Rear section for output bearing support
4656298050	HOUSING REAR SECTION	Extended rear housing for PTO mount
0631306816	CYLINDRICAL PIN	Alignment dowel for housing halves
4656301148	FIXING PLATE	Retains bearing in position
0636100817	CAP SCREW	M10 fastener for housing bolts
4656301016	SCREEN SHEET	Fine mesh filter for oil return
4656301017	SCREEN SHEET	Coarse mesh pre-filter
0636100803	CAP SCREW	M8 fastener for cover plate

Frequently Asked Questions

Q: Can I use this part in a ZF WG 200 transmission?
A: Yes, the 6057.018.334 is dimensionally identical to the seal used in WG 200 series, but we recommend verifying the housing bore diameter on your specific unit to confirm compatibility.

Q: What torque specification should I use for the housing bolts?
A: For the cap screws listed above (0636100817 and 0636100803), apply 45 Nm for M10 bolts and 25 Nm for M8 bolts, using a cross-tightening pattern to avoid warping the housing.

Q: How do I know if this part is the cause of my oil leak?
A: If fluid is dripping from the joint between the HOUS.FRONT SECT and the main casing, and the bolts are tight, the 6057.018.334 is likely compromised and should be replaced immediately.