Symptoms:

  • Harsh Reverse
  • Delayed engagement
  • Low pressure
  • Engine stall at idle
  • No line rise

Cause:

Wear at the boost regulator bore can cause low line pressure.

Correction:

Repair boost regulator valve bore for improved boost oil control.

01M, 01N, 01P

Oversized Boost Regulator Valve Kit
Part No. 119940-05K


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

Wear at the inboard end of the boost regulator bore in VW/Audi 01M, 01N and 01P units can reduce the ability of EPC/TV pressure to stroke this valve open. Full boost exiting this valve combines forces with the main regulator spring, increasing line pressure. Sonnax oversized boost regulator valve kit 119940-05K allows the valve bores to be refurbished.

  • Oversized hard-coat anodized aluminum valves restore hydraulic integrity of the circuits andprevent wear
  • A replacement ratcheting end plug is included, as the OE one often breaks
  • An adjustment tool is provided for repeated assembly, disassembly and adjustment of the ratcheting end plug
  • Valve
  • Ratcheting End Plug
  • 01M, 01N, 01P Oversized Boost Regulator Valve Kit 119940-05K
  • 01M, 01N, 01P Oversized Boost Regulator Valve Kit 119940-05K

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.

01M, 01N, 01P Oversized Boost Regulator Valve Kit Vacuum Test Locations