ZF 4644.320.042 VALVE BUSH for WG200 | OEM Genuine Part

ZF 4644.320.042 is an OEM valve bush 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 200, 4 WG 200, 4 WG 200(500), 4 WG 200(555), 4 WG 200(555/3). This is a genuine ZF component, not an aftermarket reproduction.

This valve bush is found in 15 ZF transmission variants, including: 3 WG 200, 4 WG 200, 4 WG 200(500), 4 WG 200(555), 4 WG 200(555/3), 4 WG 200(555/5), 6 WG 200, 6 WG 200(400), 6 WG 200(400/3), 6 WG 200(500). These transmissions are commonly used in wheel loaders, graders, and other heavy construction equipment. Contact us to verify fitment for your specific machine.

This part can be found under several formats: 4644320042 / 4644.320.042 / 4644 320 042. 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 (4644.320.042).

Test this solenoid valve by measuring the coil resistance with a multimeter. Compare the reading against the values specified in the ZF service manual for your transmission model. Also check for physical damage and connector corrosion.

Common symptoms include erratic shifting, delayed gear engagement, fault codes related to solenoid circuits, and transmission slipping. Diagnose with ZF diagnostic tools before replacing.

You can purchase genuine ZF 4644.320.042 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.