Complete set of internal seals and O-rings for heater valve rebuild ensures thorough restoration
Restores watertight seal inside valve housing prevents coolant leaks
Restores proper valve operation for consistent cabin heating
Cost-effective alternative to OEM valve or full rebuild
Model-specific compatibility for precise fit and function
Summarized by Shop
BMW Heater Control Valve Seal and Diaphragm Rebuild Kit — OEM 64118374994 This seals-only rebuild kit repairs internal sealing wear in compatible BMW heater control valves. It is intended for valves that leak coolant, remain stuck in one position, provide weak cabin heat, or produce different temperatures at the left and right vents while
The seal kit for my E39 Bimmer's heater valve worked as it should have. The original Bosch I used the kit for is now in backup position. But if I need it, it should be well sealed. No telling on longevity yet, so I can only comment on the quality and the fact that it's cool that the kit was actually available. Quality looks good. Fit was no problem. Oh, and I was happy to give some business to those tough and resilient Ukrainians.