Ordering the right spare part for your Webasto or Eberspächer parking heater comes down to three things you can check yourself: the heater model on the nameplate, the OE number stamped on the old part, and the voltage. This page shows you how to check them so you order the right compatible part the first time.
Step 1 — Identify your heater model
Read the metal nameplate on the heater body. Note the model family and the voltage. Examples: Webasto Thermo Top C / E / 90, Webasto Air Top 2000 / 3500 / 5000, Eberspächer Airtronic D2 / D4 / D4S, Eberspächer Hydronic D4WSC / D5WSC.
Step 2 — Note the OE number on the old part
The OE (original-equipment) number is usually stamped or printed on the component itself — for example on the glow plug, the fuel pump or the blower motor. It is the most reliable way to match a replacement. Keep it written down when you order.
Step 3 — Confirm 12 V or 24 V
Check the nameplate voltage before buying. A 12 V and a 24 V part are not interchangeable, even when the physical size looks the same. When in doubt, do not guess — confirm before ordering.
Step 4 — Match the brand line
Parts are brand- and model-specific. Webasto and Eberspächer parts are not interchangeable, and neither cross-matches with other heater brands. Always match the brand and model family shown on your heater.
Decision tree
- You know the OE number → search the number on our parking heater parts shop and match it to the compatible replacement.
- You only have a fault code → see our Webasto fault code guide or Airtronic fault code guide to narrow the likely part.
- You only know the heater model → start from the glow plug selection guide or the Airtronic D2/D4 wear parts hub.
Compatible vs OEM-grade parts — an honest comparison
| Factor | Compatible replacement | OEM part |
|---|---|---|
| Fit | Matched to the OE number, model and voltage | Made to the original specification |
| Availability | Broad stock across common OE numbers | May be back-ordered for older models |
| Price | Usually lower | Usually higher |
| Brand positioning | IntelliGenParts compatible parts — not a claim of OEM endorsement | Original manufacturer |
Our compatible parts are matched to the OE number, model and voltage. We do not claim OEM endorsement, and we do not recommend mixing parts across brands.
Shop by need
- Fuel delivery → 12V fuel metering pump 22451901 (Airtronic D2/D4)
- Water circulation → U4847 12V water pump (Thermo Top C/E/Z)
- Combustion blower → D2 blower motor, D4 blower motor, 1303846A blower (Air Top 2000ST)
- Glow plugs → glow plug selection guide
FAQ
Are IntelliGenParts parts interchangeable across brands?
No. Parts are brand- and model-specific. Webasto, Eberspächer and other heater brands are not interchangeable — always match your heater’s brand and model family.
What if my OE number is stamped differently?
Manufacturers sometimes change part numbers between revisions. Compare the model family and voltage on your heater, and contact us with a photo of the old part if you are unsure — we will help match the right replacement.
How do I contact you to verify an OE number?
Reach us on WhatsApp at +86 130 9362 3263 or email raven@intelligenparts.cn. Include a photo of the old part and the heater nameplate for the fastest match.