Moderate — 2–4 hours
Description
This component is essential for the proper functioning of the Webasto Thermo 90ST heating system. Technical support and additional parts are available from Butlertechnik.
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | WEBASTO |
| Part Number | W040 9010615B |
Videos
![[SOLVED] Diesel Heater Won't Start, Blowing White Smoke](https://img.youtube.com/vi/PaxYxzdTX64/hqdefault.jpg)
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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