ZF 4646.221.006 UNION SCREW
ZF Part Number: 4646.221.006 (also written as 4646221006 / 4646.221.006 / 4646 221 006)
Compatible ZF Transmission Models
This union screw is used in the following ZF transmission models:
- ZF 3 WG 310
- ZF 3 WG 310(4)
- ZF 6 WG 260
- ZF 6 WG 310
Part Location in Assembly
| Section | Position No. | Qty |
|---|---|---|
| Oil Pipes | 21.482 | 1 |
| Oil Pipes | 482 | 1 |
Related Parts in Same Assembly
- 4646.354.062 — DRIVER (Qty: 1)
- 0634.313.784 — O-RING (Qty: 1)
- 4646.354.047 — PUMP FLANGE (Qty: 1)
- 0636.100.426 — HEXAGON SCREW (Qty: 8)
- 4475.280.077 — SCREW PLUG (Qty: 1)
- 0501.209.719 — INDUCTIVE SENSOR (Qty: 1)
- 0501.213.027 — GEAR PUMP (Qty: 1)
- 0501.214.082 — SUCTION FILTER (Qty: 1)
Frequently Asked Questions
What is ZF part number 4646.221.006?
ZF 4646.221.006 is an OEM union screw produced by ZF Friedrichshafen AG, one of the world’s largest automotive suppliers. It is designed for use in ZF powershift transmissions, specifically in models such as 3 WG 310, 3 WG 310(4), 6 WG 260, 6 WG 310. This is a genuine ZF component, not an aftermarket reproduction.
Which ZF transmissions use 4646.221.006?
This union screw is found in 4 ZF transmission variants, including: 3 WG 310, 3 WG 310(4), 6 WG 260, 6 WG 310. These transmissions are commonly used in wheel loaders, graders, and other heavy construction equipment. Contact us to verify fitment for your specific machine.
Where is ZF 4646.221.006 installed in the transmission?
This union screw is located in the oil pipes area of the transmission. It appears in 9 different assembly configurations. In the service manual, look for position number 21.482 in the Oil Pipes section.
How do I look up ZF part 4646.221.006?
This part can be found under several formats: 4646221006 / 4646.221.006 / 4646 221 006. All formats refer to the same genuine ZF component. When ordering, any of these numbers will work. The official ZF catalog uses the dotted format (4646.221.006).
Where can I buy ZF 4646.221.006?
You can purchase genuine ZF 4646.221.006 from PartsZF.com (operated by Tianjin Xiaohang Construction Machinery Co., Ltd). We maintain direct supply channels with ZF and offer worldwide shipping. Contact our parts specialists for current pricing and lead times.
Need this part? Contact our ZF parts specialist for pricing and availability. We ship worldwide with OEM quality guarantee.
Exploded View / Assembly Diagram
The diagram below shows where ZF 4646.221.006 is located within the transmission assembly.






