Overview
The ZF 4143.352.018 DISC CARRIER is a critical OEM genuine component engineered for the clutch pack assembly within ZF’s HL 100 Series and HL 270 Series transmissions. This precision-machined carrier houses and aligns the friction discs and steel plates, ensuring consistent torque transfer and smooth gear engagement under heavy load. As a central rotating element, it directly interfaces with the transmission housing and piston assembly. The SKU 4143.352.018 is manufactured to ZF’s exacting tolerances to prevent axial play and maintain hydraulic pressure integrity within the clutch drum.
Symptoms of Failure
- Delayed or harsh gear engagement: When the disc carrier wears, clutch pack clearance increases, causing a noticeable lag or “clunk” when shifting between forward and reverse gears.
- Intermittent gear slipping under load: A worn carrier spline or distorted disc seat allows the clutch pack to slip during acceleration, particularly in higher torque ranges.
- Metallic debris in transmission fluid: Friction between a fatigued carrier and the mating 4143101009: HOUSING generates fine steel particles, often visible during oil changes.
- Oil leaks near the clutch drum: Cracks in the carrier body can compromise the seal against the 0634313603: O-RING, leading to external fluid seepage.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4143.352.018 |
| Material | High-tensile alloy steel (induction hardened) |
| Outer Diameter | 185 mm (approx.) |
| Inner Diameter (Spline) | 42 mm (approx.) |
| Thickness | 28 mm (approx.) |
| Weight | 1.45 kg (3.2 lbs) |
| OEM Reference | ZF 4143.352.018 |
| Surface Finish | Phosphate coated for corrosion resistance |
Compatibility
This disc carrier is specifically designed for ZF HL 100 Series and HL 270 Series transmissions. It is also a direct fit for the WG180, WG200, and WG210 series, where it functions within the forward clutch pack. For proper assembly, always pair this carrier with a new 0634313603: O-RING and inspect the mating 4143301025: HOUSING for wear. The carrier is secured using a 4475280018: SCREW PLUG to retain hydraulic pressure.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4143101009 | HOUSING | Encloses the clutch drum assembly |
| 4143301025 | HOUSING | Rear support housing for output shaft |
| 0634313603 | O-RING | Seals carrier-to-housing interface |
| 4475280018 | SCREW PLUG | Locks hydraulic circuit port |
| 0501342341 | SUPPORT RING | Prevents carrier deformation under load |
| 4143298457 | SEAL KIT | Complete overhaul gasket set |
| 0634313591 | O-RING | Secondary seal for piston chamber |
| 0636101068 | CAP SCREW | Fastens carrier to clutch hub |
| 4143221013 | THROTTLE VALVE | Modulates hydraulic feed pressure |
| 0634304484 | O-RING | Seals valve body connection |

