Webasto Air Top 3500 / 5000 ST 12v Service Kit Diesel 9004217A
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Core Features & Benefits
Diesel heater service kit for reliable 3500/5000 ST maintenance
Keep your compatible Webasto diesel air heater running reliably with a replacement burner, glow pin, and gasket kit. This 12V Webasto diesel heater service kit supports Webasto Air Top 3500 ST and Webasto Air Top 5000 ST diesel heaters.
Benefits & Use Cases
This Webasto service kit is designed for maintenance and repair work on compatible diesel air heaters, especially when diagnosis confirms burner, glow pin, or gasket replacement is required.
- Supports service work on Webasto Air Top 3500 ST and Webasto Air Top 5000 ST heaters
- Useful for diesel heater maintenance in vans, RVs, trucks, boats, and off-highway machinery fitted with a compatible heater
- Includes key replacement components for burner and glow pin service
- Helps keep compatible 3500/5000 heater systems ready for cold-weather use
Technical
- Product Type: Webasto diesel heater service kit
- Fuel Application: Diesel
- Voltage: 12V
- Compatible Heater Models: Webasto Air Top 3500 ST and Webasto Air Top 5000 ST diesel heaters only
- Part Numbers: 4111821A / 4111821; 9004217A / 9004217
Compatibility note: Check your heater model, voltage, and part number before ordering. This 12V service kit should not be assumed to fit 24V heaters, Air Top 2000 ST/STC heaters, Air Top Evo 40/55 heaters, or other Webasto Air Top models unless confirmed by part number.
Heater Compatibility
- Webasto Air Top 3500 ST diesel air heaters, 12V
- Webasto Air Top 5000 ST diesel air heaters, 12V
- Vehicles and equipment fitted with a compatible Webasto Air Top 3500 ST or Air Top 5000 ST heater
Kit Includes
- Webasto burner
- Glow pin
- Gasket kit
FAQs
Is this service kit a complete heater?
No. This is a diesel heater service kit for compatible Webasto Air Top 3500 ST and Webasto Air Top 5000 ST diesel heaters, not a complete heater unit.
Which heaters does this 3500/5000 service kit fit?
It is listed for 12V Webasto Air Top 3500 ST and Webasto Air Top 5000 ST diesel heaters. Match your heater model, voltage, and part number before ordering.
Is this the 12V or 24V service kit?
This listing is for the 12V diesel service kit. Check your heater label before ordering, as 24V Air Top 3500 ST and Air Top 5000 ST heaters use different service parts.
When should I replace burner or glow pin parts?
Replacement may be needed when ignition issues, failed starts, or service faults point to burner, glow pin, or combustion component wear. Always confirm the fault before replacing parts.
Will this kit fix every no-start fault?
No. A replacement burner glow pin kit may help when those parts are the confirmed cause, but no-start issues can also come from fuel supply, low voltage, airflow restriction, exhaust problems, wiring faults, or heater lockout.
Can this kit help prepare my heater for winter use?
Yes. Replacing worn combustion-related service parts can help keep a compatible Webasto diesel heater ready for cold-weather use when the heater has been properly diagnosed and serviced.
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Webasto Air Top 3500 / 5000 ST 12v Service Kit Diesel 9004217A
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