Overview
The ZF 4642.302.106 OIL FEED FLANGE is a critical fluid distribution component engineered for the WG 150 series transmission. Positioned between the pump housing and the main valve body, this OEM genuine part ensures precise oil routing to lubricate planetary gearsets and clutch packs. The SKU 4642.302.106 is machined from high-strength aluminum alloy to withstand continuous hydraulic pressure up to 18 bar. When installed alongside the 4642101108 TRANSMISSION HOUSING or the 4642301208 TRANSMISSION HOUSING, this flange creates a sealed oil gallery that prevents cross-contamination between lubrication circuits. The part features precision-drilled orifices that meter oil flow to specific bearing points, making it indispensable for maintaining thermal stability in heavy-duty applications.
Symptoms of Failure
- External oil seepage at flange mating surface — Cracked or warped flanges cause visible oil drips near the transmission bell housing, often mistaken for rear main seal leaks.
- Intermittent gear slipping under load — Insufficient oil pressure due to flange leakage leads to delayed clutch engagement, particularly in 3rd and 4th gears during uphill hauling.
- Overheating transmission fluid — Restricted oil flow through a deformed flange reduces cooling capacity, triggering dashboard temperature warnings after 30 minutes of operation.
- Metallic debris in oil pan — Worn flange surfaces shed aluminum particles that contaminate the hydraulic system, accelerating wear on the 0630361029 SEALING CAP and valve body components.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4642.302.106 |
| Material | EN AW-6082 Aluminum Alloy |
| Weight | 0.87 kg (1.92 lbs) |
| Length | 142 mm |
| Width | 68 mm |
| Height | 32 mm |
| Bolt Hole Pattern | 4x M8 on 85 mm centers |
| Operating Pressure | 12-18 bar |
| Temperature Range | -40°C to +120°C |
| OEM Reference | ZF 4642.302.106 |
Compatibility
This oil feed flange is specifically designed for the ZF WG 150 series, but it also fits select models in the WG 180 and WG 200 families due to shared housing bolt patterns. Verified compatible transmissions include WG150-6, WG150-8, WG180-6, WG200-8, and WG200-10. Always verify the flange thickness against your existing unit, as some early WG180 variants used a 28 mm version. The part integrates directly with the 0636100621 HEXAGON SCREW kit and the 0634303340 O-RING for sealing. For complete assembly, ensure the 0730365125 TYPE PLATE is correctly positioned to avoid misidentification during rebuilds.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101108 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4642301208 | TRANSMISSION HOUSING | Alternate housing variant for WG150 |
| 0730365125 | TYPE PLATE | Identification plate for model specs |
| 0631311009 | GROOVED STUD | Alignment dowel for flange positioning |
| 4642301168 | SCREEN SHEET | Fine mesh filter for oil intake |
| 4642301169 | SCREEN SHEET | Coarse mesh pre-filter variant |
| 0636100621 | HEXAGON SCREW | M8x25 flange mounting bolt |
| 0630361029 | SEALING CAP | Plugs unused oil ports |
| 4642306254 | ADAPTER | Converts flange to alternate oil routing |
| 0634303340 | O-RING | Nitrile seal for flange-to-housing joint |
