Overview
The ZF 4143.351.004 END SHIM is a precision-engineered OEM genuine component designed to establish critical axial clearances within ZF HL 100 and HL 270 series transmissions. This shim sits between the transmission housing and the bearing assembly, ensuring correct preload and gear alignment for optimal torque transfer. The SKU 4143.351.004 is machined to exacting tolerances to prevent internal component migration during high-load operations. When paired with a 4143101009 HOUSING or a 4143301025 HOUSING, this end shim maintains the structural integrity of the gear train, reducing vibration and extending service intervals.
Symptoms of Failure
When the ZF 4143.351.004 END SHIM wears or deforms, operators may notice the following failure indicators:
- Excessive axial play in the output shaft – A worn shim allows the shaft to drift, causing noticeable clunking during gear engagement.
- Premature bearing noise or whining – Loss of preload leads to bearing skidding, generating a high-pitched whine under load.
- Intermittent gear slipping under torque – Incorrect clearance reduces gear mesh depth, resulting in power loss during acceleration.
- Oil contamination from metal debris – A collapsed shim sheds fine metallic particles into the lubricant, visible during routine drain inspections.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4143.351.004 |
| Material | Hardened spring steel (DIN 1.4310) |
| Outer Diameter | 48.0 mm |
| Inner Diameter | 32.5 mm |
| Thickness | 1.50 mm |
| Weight | 12 grams |
| OEM Reference | ZF 4143.351.004 |
| Surface Finish | Ground, deburred edges |
Compatibility
This end shim is specifically validated for use in the following ZF transmission series:
- HL 100 Series (including WG180, WG200 variants)
- HL 270 Series (including WG210, WG250 variants)
- Compatible with 0634313603 O-RING and 4475280018 SCREW PLUG for complete housing sealing.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4143101009 | HOUSING | Main transmission casing for gear support |
| 4143301025 | HOUSING | Secondary housing for clutch pack retention |
| 0634313603 | O-RING | Seals housing joint against fluid leakage |
| 4475280018 | SCREW PLUG | Closes hydraulic test ports |
| 0501342341 | SUPPORT RING | Distributes clamping load on shim stack |
| 4143298457 | SEAL KIT | Complete overhaul gasket set |
| 0634313591 | O-RING | Secondary sealing for valve body |
| 0636101068 | CAP SCREW | Fastens housing halves together |
| 4143221013 | THROTTLE VALVE | Modulates hydraulic pressure for shifts |
| 0634304484 | O-RING | Seals throttle valve bore |

