Overview
The ZF 4651.056.016 is a critical OEM genuine component engineered specifically for the WG 110 Series transmission. This part functions as a precision-machined control element within the valve body assembly, regulating hydraulic fluid flow to ensure smooth gear engagement and consistent clutch pack pressure. As an integral part of the transmission’s hydraulic circuit, the 4651.056.016 works in concert with the TRANSMISSION HOUSING and the HOUSING to maintain proper oil channel integrity. This SKU is a direct replacement for the original factory-installed part, guaranteeing exact fitment and performance without modification.
Symptoms of Failure
When the 4651.056.016 begins to wear, operators typically notice these specific failure indicators:
- Delayed or harsh shifting – A worn part causes inconsistent hydraulic pressure, leading to noticeable lag when shifting from neutral to drive or between forward gears.
- Transmission fluid leaks near the valve body – Deterioration of the sealing surfaces allows ATF to escape, often pooling under the bell housing or along the pan gasket.
- Erratic gear engagement under load – The transmission may slip or momentarily lose power during acceleration, particularly when climbing grades or carrying heavy payloads.
- Increased operating temperature – Restricted fluid flow forces the transmission to run hotter than normal, triggering warning lights or reducing torque converter efficiency.
Technical Specifications
| Specification | Value |
|---|---|
| OEM Part Number | 4651.056.016 |
| Material | Hardened aluminum alloy with anodized coating |
| Weight | 0.85 kg (1.87 lbs) |
| Dimensions (L x W x H) | 142 mm x 68 mm x 35 mm |
| Surface Finish | Ground and polished sealing faces |
| OEM Reference | ZF WG 110 Series |
Compatibility
This genuine ZF part is designed primarily for the WG 110 transmission series. It is also compatible with select models in the WG 180 and WG 200 families that share the same valve body architecture. Always verify the part number against your transmission’s serial plate before installation. The O-RING and HOUSING are commonly replaced simultaneously to ensure a complete seal.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4651101013 | TRANSMISSION HOUSING | Main structural casing for gear and clutch assemblies |
| 4651301032 | HOUSING | Secondary housing for valve body and oil channels |
| 0634303928 | O-RING | Elastomeric seal preventing fluid bypass |
| 4651301033 | HOUSING | Lower housing cover with integrated oil passages |
| 4651203002 | SCREEN SHEET | Fine mesh filter protecting valve body from debris |
| 4651303005 | SCREEN SHEET | Secondary filter for hydraulic circuit |
| 0636101032 | CAP SCREW | Fastener for securing housing components |
| 0630361028 | SEALING CAP | Protective cover for unused hydraulic ports |
| 4475280060 | SCREW PLUG | Threaded plug for oil gallery access points |
| 0634303312 | O-RING | Seal for screw plug and cap interfaces |
Frequently Asked Questions
Q: Can the 4651.056.016 be installed without removing the transmission from the vehicle?
A: Yes, in most applications this part is accessible after dropping the transmission pan and removing the valve body cover. However, working in tight chassis configurations may require partial transmission lowering.
Q: How do I confirm this part is genuine OEM and not aftermarket?
A: Genuine ZF parts feature laser-etched part numbers and a matte anodized finish. The 4651.056.016 includes a holographic ZF authenticity sticker on the packaging.
Q: What is the typical service life of this component?
A: Under normal operating conditions with regular fluid changes, the 4651.056.016 typically lasts 250,000 to 350,000 miles. Premature wear is often linked to contaminated transmission fluid or overloading.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
Request a Quote →
