ZF 4656.183.051 LOOSE PARTS for WG160 | OEM Genuine Part

Overview

The ZF 4656.183.051 LOOSE PARTS kit is a critical service component designed for the WG 160 series transmission. This genuine OEM assembly includes all necessary fasteners, seals, and positioning elements required to secure and align the main housing sections during a rebuild or major repair. The SKU 4656.183.051 specifically addresses the loose hardware that holds the TRANSMISSION HOUSING together with the HOUS.FRONT SECT and the HOUSING REAR PART. Without this precise hardware set, the transmission cannot maintain proper gear alignment or oil containment.

Symptoms of Failure

• External oil seepage at housing seams: When the loose parts (bolts, pins, or plates) fatigue, the seal between the front and rear housing sections breaks, leading to visible transmission fluid leaks around the bell housing or rear cover.
• Intermittent gear engagement or slipping: Worn or missing fasteners allow the HOUSING REAR PART to shift slightly under load, causing misalignment of the output shaft and erratic gear changes.
• Unusual vibration during acceleration: Loose housing bolts permit micro-movement of the transmission case, transmitting vibration through the driveline that worsens under torque.
• Increased metallic debris in oil pan: As the housing components loosen, internal contact between the HOUSING REAR PART and rotating elements generates fine metal particles.

Technical Specifications

Compatibility

This genuine ZF loose parts kit is primarily designed for the WG 160 transmission series. Based on the housing geometry and fastener pattern, it is also compatible with the WG 180 and WG 200 series transmissions that share the same front and rear housing interfaces. Always verify your transmission model number before ordering. The kit directly interfaces with the TRANSMISSION HOUSING and both front and rear housing sections.

Related Components

Frequently Asked Questions

Q: Can I reuse the old bolts from my WG160 transmission instead of buying this kit?
A: ZF strongly recommends against reusing fasteners. The 4656.183.051 kit includes new cap screws and pins that meet exact torque specifications. Reusing old hardware risks thread fatigue and oil leaks.

Q: Does this kit include the screen sheets or fixing plate?
A: No. This kit contains only the loose hardware (bolts, pins, and small plates). The SCREEN SHEET and FIXING PLATE are ordered separately as shown in the related components table above.

Q: Will this part fit a ZF WG180 transmission?
A: Yes, the 4656.183.051 loose parts kit is compatible with WG180 and WG200 series transmissions that use the same housing bolt pattern as the WG160. Confirm your housing part numbers match the HOUS.FRONT SECT and HOUSING REAR PART listed above.