Kit réparation tube central 924 (4 roulements) - 20mm

Background
Currently, sourcing a complete torque tube assembly (shaft + housing) for the Porsche 924 is extremely difficult and currently unavailable from Porsche. Even if a complete assembly were offered in the future, in most cases it is unnecessary to replace the entire unit. If the torque tube housing and drive shaft are still in good condition, the internal bearings are typically the only components that wear out, causing noise or vibration. Replacing these bearings restores smooth, quiet operation without the expense or effort of sourcing a full assembly.

Symptoms
If your 924's torque tube / drive shaft is making a rhythmic squealing, humming, or grinding noise, especially that changes with speed, and there's a resonant vibration, it's a strong indicator that the internal bearings are failing.

Usage
This repair kit includes four high-quality bearings designed specifically for Porsche 924 naturally aspirated models (1976–1985) with a 20 mm drive shaft. It restores smooth, quiet operation without requiring a full torque tube replacement, saving both cost and preserving originality.

Note: This kit does not fit 924 S, 924 Turbo or 924 Carrera GT models, which use larger 25 diameter shafts.

Features
High-Quality Bearing Components
Precision Machined for Long Life
Designed to Fit 20 mm Drive Shaft Only
Restores Quiet, Smooth Operation
Compatible with OE Housing (No Modifications)
Direct Replacement for Part Numbers 477 521 230 B / 477 521 230 BX
Includes Bearing Set for Both Ends of Shaft

Fitment & Quantity
Sold as a set (4 bearings)
1 set required per vehicle
Compatible with Porsche 924 naturally aspirated models (1976–1985) with 20 mm torque tube shafts

About FVD Brombacher
Since 1984, FVD Brombacher has sourced and manufactured Porsche parts from the highest-quality OEM suppliers, niche German manufacturers, and respected tuning specialists. With our shop and distribution center in Germany, we are uniquely positioned to deliver parts globally directly from their origin. Driven by passion for all things Porsche, our mission is twofold: to preserve these iconic cars so they remain on the road for generations, and to push their performance further for those who demand more speed, precision, and excitement.

Important Note
Always check the Model Fitment tab to confirm compatibility with your vehicle before ordering. The information above is for general reference only. Installation and diagnostics should be carried out by a certified Porsche specialist. This kit does not fit 924 S, 924 Turbo or 924 Carrera GT models, which use larger 25 diameter shafts.