Symptoms:

  • Delayed Forward
  • Chatter on Forward
  • Harsh Forward

Cause:

Low or excessive forward (V clutch) pressure due to worn SIV safety bore.

Correction:

The Sonnax oversized safety valve has been redesigned with annular grooves and is made of upgraded materials to help prevent wear and restore proper hydraulic control.

01J, 01T

Oversized Safety Valve
Part No. 33741B-01


You need this if... View Instructions Find a Distributor

A common issue with Audi 01J and 01T units is chatter during engagement or harsh forward engagement. This can be caused by a worn safety valve bore. The Sonnax oversized safety valve 33741B-01 restores V-clutch engagement.

  • Valve is hardcoat anodized and features annular grooves to reduce wear
  • Restores proper hydraulic sealing and OE pressure control

Sonnax valve body layouts provide a detailed overview of individual units making it quick and easy to determine what’s available for the specific valve body you’re working on. See all Sonnax valve body layouts.

VW/Audi 01J Valve Body Layout

VW/Audi 01J Valve Body Layout

VW/Audi 01T Valve Body Layout

VW/Audi 01T Valve Body Layout
  • 01J, 01T Oversized Safety Valve 33741B-01
  • 01J, 01T Oversized Safety Valve 33741B-01

You need this if...

Vacuum testing at the port(s) indicated fails to hold the recommended minimum in-Hg, or if wear is visually detected.

01J, 01T Oversized Safety Valve Vacuum Test Locations
01J, 01T Oversized Safety Valve Vacuum Test Locations