Audi 4.0T Turbo Oil Screen Failure - The Catastrophic TSB 2044640

Technical Breakdown

The Audi 4.0T uses a ‘Hot-V’ configuration where the oil is supplied to the turbos via a central oil module. Inside this module is a mesh screen smaller than a thumbnail.

The TSB 2044640 Recall

Audi issued a mandatory recall to replace this screen with a revised version with larger mesh openings. However, many enthusiasts opt to delete the screen entirely or use the Melett/JHM external filter kits.

Prevention vs. Cure

• Prevention: $1,500 for a specialist to pull the turbos and swap/delete the screen.
• Cure: $10,000+ if the turbo shaft snaps and sends impeller fragments into the intake valves.