PDM (TSK4-B) TSK Replacement Bearing - Subaru

PDM Replacement Clutch Release Bearing (TSK4-B) for Subaru WRX STI

Manufacturer: Subaru
PDMUSA Part Number: TSK4-B
Supersessions: 30502AA130 / 30502AA080
For Use With: PDMUSA TSK4 Sleeve Kit
Bearing Type: Oversized bearing designed specifically for use with the TSK4 stainless steel sleeve (Pull-Type Bearing)

✅ Vehicle Compatibility & Chassis Codes

🌎 U.S. Market

🌍 Global Market

⚠️ Important Note
The TSK4-B bearing is oversized and must be used with the PDMUSA TSK4 Sleeve Kit.
It is not compatible with OEM aluminum sleeve surfaces.
Using the bearing without the sleeve may result in premature failure and will void the warranty.

Clutch Release Bearing Installation Notice

We have encountered instances of release bearing damage caused by improper installation, specifically cracking or failure of the plastic base. This is a known issue and is often related to installation technique.

With pull-style clutch systems, the release bearing must be installed onto the clutch fork first. After the engine and transmission are mated, the bearing will properly engage and snap into the pressure plate when the clutch is actuated.

A common point of confusion occurs during removal. When the transmission is separated, the release bearing typically remains attached to the pressure plate due to its locking mechanism. This can lead to the incorrect assumption that the bearing should be installed onto the pressure plate prior to reassembly.

This is incorrect.

If the release bearing is pre-installed onto the pressure plate before reinstalling the transmission, it may prevent proper alignment with the clutch fork. This misalignment can place excessive stress on the bearing, often resulting in damage to the plastic base.

To prevent damage:

• Always install the release bearing onto the clutch fork first
• Do not pre-install the bearing into the pressure plate
• Allow the bearing to engage naturally during clutch operation after reassembly

Failure to follow proper installation procedures may result in premature bearing failure.

🔍 Alternate Listings (Search & Compatibility)

30502AA130 / 30502AA080
TSK4-B Subaru Oversized Clutch Bearing
WRX STI Throw-out Bearing Upgrade
6MT Sleeve-Compatible Bearing
Subaru Pull-Type Clutch Release Bearing