Description
Vaillant 077398 Front Casing Section – Ecomax/Ecomax VUW
Vaillant 077398 Front Casing Section replacement part with manufacturer part number 77398. This exact item is a genuine, brand-new Vaillant product. It is intended for the compatible appliances shown below, where listed. Match the boiler model and MPN before ordering.
Product Details
Brand: Vaillant
Manufacturer part number (MPN): 77398
Condition: Genuine brand new
Boiler Compatibility
Check the exact appliance model and manufacturer part number before ordering. See the GC Number tab for the verified GC references.
This part fits the following 9 appliances:
Listed compatible appliances
- Vaillant Boiler Spares EMAX 613/2 E VU 126/2-C SYS NG — Browse Vaillant parts (brand archive)
- Vaillant Boiler Spares EMAX 618/2 E VU 186/2-C SYS NG — Browse Vaillant parts (brand archive)
- Vaillant Boiler Spares EMAX 622/2E VU 226/2-C SYS NG — Browse Vaillant parts (brand archive)
- Vaillant Boiler Spares EMAX 824/2 E VUW246/2-C CBI NG — Browse Vaillant parts (brand archive)
- Vaillant Boiler Spares EMAX 828/2 E VUW286/2-C CBI NG — Browse Vaillant parts (brand archive)
- Vaillant Boiler Spares VU 126/2-C (2001-2007) — Browse Vaillant parts (brand archive)
- Vaillant Boiler Spares VU 226/2-C (2001-2007) — Browse Vaillant parts (brand archive)
- Vaillant Boiler Spares VUW 246/2-C (2001-2007) — Browse Vaillant parts (brand archive)
- Vaillant Boiler Spares VUW 286/2-C (2001-2007) — Browse Vaillant parts (brand archive)
Ordering and support
Before you order
Use the manufacturer part number as your main check. Do not rely on a similar-looking part. Compare the appliance model and the GC Number tab before ordering.
Technical FAQs
How do I check that this is the correct replacement part?
Use manufacturer part number 77398 as the main check. Match it to the old part or appliance documentation, not only to a similar-looking product.
Will this part fit my boiler?
This exact part is listed for 9 appliance model(s). Check your appliance model, MPN and the GC Number tab before ordering.
Can a similar-looking part be used instead?
Do not rely on shape or appearance alone. Check the manufacturer part number and the exact appliance model before ordering a replacement.
Does the part number identify the cause of a boiler fault?
No. A part number helps identify a replacement item but does not diagnose a fault. Ask a suitably qualified professional to identify the cause where required.
Who should fit and test this part?
Installation and testing should be completed by a suitably qualified professional where required. This exact item is a genuine, brand-new Vaillant product.
Related Vaillant parts
Browse related Vaillant boiler parts and Vaillant Boiler Accessories.
Help and returns
For help checking this part, message us on WhatsApp. This item includes a 12-month warranty. Returns are subject to the 30-day returns policy.
Product check
The product details on this page are based on reviewed source information for this exact manufacturer part number.
Installation and testing should be completed by a suitably qualified professional where required.











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