- B2 Brake clutches burned
- Delayed Reverse
- K3 Clutch burned
- Low line rise in Reverse
Continual boost valve stroking results in sleeve bore wear and loss of Reverse pressure.
Installing Sonnax boost valve and sleeve restores critical tolerances to bring back normal operating conditions.
Boost Valve Kit
This kit also fits BMW (6F21WA) & VW/Audi (09G, 09K, 09M).
The boost sleeve in Aisin AW TF-60SN units wears from repeated oscillation of the boost valve, allowing Reverse pressure to exhaust. This will result in delayed Reverse, low line pressure in Reverse and/or burnt K3 and B2 brake clutches. Sonnax boost valve kit 15741-51K eliminates these concerns and restores proper hydraulic control.
You need this if...
A vacuum test at the port indicated fails to hold at least 18 in-Hg.
Click here to view PDF if instructions do not appear below.
Valve Body Layouts
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