IRS Final Drive Flange Cup Seals (40mm) - Urethane

These high-quality polyurethane final drive flange seals are engineered for the centre of the output flange on IRS (Independent Rear Suspension) gearboxes. Designed to outperform standard rubber seals, they resist tearing, hardening, or flattening—offering long-lasting protection and durability.

These seals are essential in preventing gear oil leaks at the differential flange, particularly under the stresses of performance driving, age, or daily use. Sold as a pair, they’re perfect for refreshing your transmission during maintenance or when upgrading to IRS setups.

Ideal for classic and modern VW models, these seals fit a wide range of air-cooled and water-cooled vehicles.

Function and Benefits:

• Provides a snug, leak-proof seal at the centre of the final drive output flange

• Durable polyurethane construction resists wear, tear, and flattening over time

• Excellent for performance or off-road use where standard seals often fail

• Easy to install and a direct replacement for original parts

• Helps maintain gearbox oil levels and reduce contamination

Compatibility:

Air-cooled VW applications:

• Beetles with IRS gearboxes

• Type 3 models

• Type 181 (Thing)

• Karmann Ghia

• Splitscreen Buses using IRS conversion from Beetles

Water-cooled VW models with manual gearboxes (from March 1994 onwards where applicable):

• VW T4 Transporter Buses (manual only)

• Corrado

• Mk1 Caddy, Golf, Jetta, Scirocco

• Mk2 Golf, Jetta, Scirocco

• Mk3 Golf, Polo

• Mk4 Golf

⚙️ Note: These seals install at the centre of the flange on both left and right-hand sides. Always inspect the flange cups for wear or damage when fitting new seals.

Product Details:

• Material: Polyurethane

• Sold as: Pair (2 seals)

• Position: Final drive output flange – IRS gearboxes