Overview
The ZF 4657.230.039 CONVERTER BELL is a critical structural component that mounts directly between the torque converter housing and the main transmission case on WG160, WG190, and WG210 series units. This OEM genuine part, identified by SKU 4657.230.039, serves as the primary alignment interface, ensuring the converter assembly remains concentric with the input shaft during high-torque operations. Manufactured from high-strength cast alloy, it absorbs torsional vibration and distributes clamping loads evenly across the bell housing flange. When paired with the 4656201085: HOUS.FRONT SECT, it forms a sealed enclosure that protects the converter from debris while maintaining precise oil flow paths.
Symptoms of Failure
- Torque converter oil leaks at bell housing seam – Worn gasket surfaces or micro-cracks in the bell casting allow ATF to weep past the mating face, often mistaken for a rear main seal failure.
- Transmission gear slipping under load – A distorted bell housing shifts converter alignment, reducing hydraulic pressure to the clutch packs and causing intermittent slip in higher gears.
- Abnormal converter rattle or vibration – Fatigue cracks in the bell structure permit the converter to wobble, producing a metallic knocking sound that intensifies during acceleration.
- Difficulty engaging park or reverse – Misalignment from a warped bell prevents the shift linkage from fully seating, leading to hard engagement or delayed response.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4657.230.039 |
| Material | Grey cast iron (EN-GJL-250) |
| Outer Diameter | 380 mm |
| Bolt Hole Pattern | 8 x M12 on 320 mm PCD |
| Weight | 4.8 kg |
| OEM Reference | ZF 4657.230.039 |
| Surface Treatment | Phosphate coated |
Compatibility
This converter bell is engineered for ZF WG-series powershift transmissions, specifically the WG160, WG190, and WG210 models. It also fits the WG180 and WG200 variants when used with the correct 0631306816: CYLINDRICAL PIN for dowel alignment. The bell is not compatible with WG120 or WG250 units without modification to the mounting flange. For proper installation, always replace the 4656301148: FIXING PLATE and use new 0636100817: CAP SCREW fasteners torqued to 85 Nm.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656201085 | HOUS.FRONT SECT | Front housing section that mates with converter bell |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for bell housing positioning |
| 4656301148 | FIXING PLATE | Retains bell housing to transmission case |
| 0636100817 | CAP SCREW | M12 bolt for bell housing attachment |
| 4656301016 | SCREEN SHEET | Fine mesh filter for converter oil circuit |
| 4656301017 | SCREEN SHEET | Coarse mesh pre-filter for oil sump |
| 0636100803 | CAP SCREW | M10 bolt for screen sheet retention |
| 4656301047 | OIL FEED.HOUSG. | Oil supply housing for converter lubrication |
| 0736300233 | TORX SCREW | Torx-head fastener for oil feed housing |
| 4656301023 | GASKET | Bell housing to transmission case seal |
Frequently Asked Questions
Q: Can I reuse the old fixing plate when installing this converter bell?
A: No. The 4656301148: FIXING PLATE is a single-use component that deforms during torquing. Always replace it to maintain proper clamping force and prevent oil leaks.
Q: How do I know if my WG190 needs this bell housing?
A: Look for oil residue at the bell-to-case seam and measure converter end-play. If end-play exceeds 0.5 mm or you see cracks near the bolt holes, replace with SKU 4657.230.039 immediately.
Q: Is this part compatible with the ZF 4WG210?
A: Yes, the 4657.230.039 fits all 4WG210 variants. Ensure you also install new 0636100817: CAP SCREW fasteners and the 4656301023: GASKET for a leak-free seal.
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Phone: +86 158 2286 3467 |
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