Genuine ZF Part 1238 304 394 – Sliding Block

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  • ‌P/N:1238 304 394

Genuine ZF Part 1238 304 394 – Sliding Block


Product Overview

The ZF part 1238 304 394 is a high-wear sliding block (also known as a shift fork pad), a vital component among critical ZF gearbox parts. This small but essential part is responsible for ensuring smooth, precise, and quiet gear selection by acting as an interface between the shift fork and the synchronizer sleeve.

Compromised or worn sliding blocks are a common cause of gear grinding, difficult shifting, and transmission noise. Replacing it with this genuine ZF part guarantees a perfect fit and restores the transmission’s original shifting quality. For ZF parts dealers and professional mechanics, sourcing this component from a reliable ZF parts supplier is key to delivering lasting repairs. This OEM sliding block is manufactured from a special, low-friction composite material designed for maximum durability and performance under constant load.

Simple Installation Guide for ZF Sliding Block 1238 304 394

Transmission work is complex. Always refer to the official ZF service manual. This task requires disassembling the transmission and should be performed by a qualified technician.

  1. Transmission Removal: Safely remove the transmission from the vehicle and place it on a workbench.

  2. Case Disassembly: Carefully separate the transmission case to gain access to the internal shift mechanism.

  3. Locate and Remove: Identify the worn sliding block on the shift fork. It is typically held in place by a clip or a pin. Note its orientation before removal.

  4. Clean and Inspect: Thoroughly clean the shift fork contact area. Inspect the fork itself for any wear or damage.

  5. Install New Block: Press the new genuine ZF sliding block (1238 304 394) into place on the shift fork, ensuring it is securely seated and oriented correctly.

  6. Reassemble: Reassemble the transmission following the service manual’s reverse procedure, paying close attention to torque specifications.


Packaging & Shipping

By Express :     Suitable for sample order or <50 KG        Fast:3-10 days       High shipping cost         Door to door service
By Air :   Suitable for >50 KG         Fast: 3-7 days       Lower than express cost         Airport to airport service
By Sea:   Suitable for >300 KG     Lower cost port to port service

 

As a leading supplier and dealer of ZF parts, we provide genuine components to maintain the integrity and efficiency of your gearbox system. Trust in our expertise and quality assurance to keep your ZF gearbox running smoothly.

‌Installation Tips

Surface prep: Degrease with ZF Cliclean 3 solvent; Gasket application: Use Loctite 518 in continuous 1.5mm bead;; Alignment: Install using factory alignment pins (ZF tool B40 5003 recommended);; Torque sequence:Initial: 12Nm star pattern—–Final: 28Nm + 90° angle torque;;;; Post-install: Pressure test at 2.5 bar before fluid fill

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