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Details
| Specification | Value |
|---|---|
| Brand | BM CATALYSTS |
| MPN | bm91455h |
| Category | catalyst converter |
| Test Mark | E57-103R |
| only in connection with | FK91455 |
OE numbers (1)
Search by this OE number to find compatible parts
- BMW—18407518679
Where this part fits
Original-fit position for OE 18407518679. The red ring marks where this part installs on the vehicle.
About this product
The BM CATALYSTS catalyst converter (BM91455H) is a professional-grade replacement component engineered for long service life and reliable operation across all conditions your vehicle encounters. The part is built to the following specification: Test Mark: E57-103R, only in connection with: FK91455, Material: 47, Guarantee: Aluminium, Product fulfils: 23. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. Verified to fit BMW models. All compatibility data is cross-checked against the TecDoc database — select your vehicle to confirm the part matches your specific engine and year. This part supersedes original equipment references: 18407518679, 19.83.43, 28326, 312897 and 8 more. Matching these numbers confirms a like-for-like replacement with no loss of function. BM CATALYSTS is a recognised supplier of automotive replacement components to independent workshops and dealer networks across Europe. All parts are sourced from authorised distribution channels and carry full manufacturer traceability — you receive exactly the same component supplied to professional garages and dealer workshops. If fitment or specifications do not match your vehicle, our technical team can help identify the correct alternative — use the vehicle selector or contact us with your VIN for a guaranteed-fit recommendation. Replacing worn components on schedule preserves your vehicle's safety, reliability, and resale value — and aftermarket parts from established brands deliver OEM-equivalent performance at a fraction of the dealer price. Every part is dispatched with tracked delivery and a 14-day money-back guarantee with hassle-free returns.
Suitable cars
Equivalent products (11)
catalyst converter BM CATALYSTS BM91455H — compatible car models
| Car models | BMW: 5 (E39), 5 (E60), 5 Touring (E39), 5 Touring (E61), 7 (E65, E66, E67), X5 (E53) |
|---|---|
| Engines | 520 i; 525 i; 730 i, Li; 3.0 i |
| Year of manufacture | 1995-2010 |
| Manufacturer article number (MPN) | BM91455H |
| OE part numbers | 18407518679 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
BM CATALYSTS bm91455h Approved. Guarantee: 2. Material: 47. only in connection with: FK91455. Product fulfils: 23. Test Mark: E57-103R
- 1x catalyst converter
Shipping, returns, warranty
Free UK delivery on orders over £99.00. Tracked standard shipping.
- Standard delivery: 5–9 business days
- Order before 5pm — ships the next working day
- Free returns within 14 days
- All parts backed by manufacturer warranty
Warranty: 12-month manufacturer warranty on all parts. 14-day money-back guarantee if the part doesn't fit your vehicle.
Frequently Asked Questions
Is this catalyst converter compatible with my car?
This catalyst converter fits BMW vehicles. Use the vehicle selector at the top of the page to check exact compatibility — enter your car's make, model, and engine for a confirmed fitment match. All fitment data is verified through TecDoc.
What specifications does this BM CATALYSTS catalyst converter have?
This BM CATALYSTS catalyst converter has the following specifications: Test Mark: E57-103R; only in connection with: FK91455; Material: 47; Guarantee: 2; Product fulfils: 23. Check the full specifications table above for complete details.
What OE part numbers does this catalyst converter replace?
This catalyst converter replaces OE part numbers: 18407518679. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a catalyst converter cost?
This BM CATALYSTS catalyst converter is available for £309.99. Catalyst converter prices vary depending on brand, specifications, and vehicle compatibility. BM CATALYSTS parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my catalyst converter?
Regular inspection of your catalyst converter is recommended as part of routine vehicle maintenance. Watch for changes in performance, unusual noises, or visual signs of wear. Consult your vehicle's owner manual for manufacturer-recommended replacement intervals specific to your make and model.
What tools do I need to replace a catalyst converter?
Tools required vary by vehicle make and model. Generally, a basic socket set, screwdrivers, and vehicle-specific tools may be needed. We recommend consulting a workshop manual for your specific vehicle, or having the catalyst converter fitted by a professional mechanic.
Can I use this part as a replacement for OE 18407518679?
Yes, this BM CATALYSTS catalyst converter is a direct replacement for OE part number 18407518679. It is manufactured to meet or exceed original equipment specifications, ensuring proper fitment and performance. All cross-reference data is verified through TecDoc.
Is the BM CATALYSTS BM91455H the same as the BM CATALYSTS BM80250H?
No, while both are catalyst converter parts, they are different products. The BM CATALYSTS BM91455H has Test Mark: E57-103R, only in connection with: FK91455, Material: 47. The BM CATALYSTS BM80250H may differ in dimensions, fitting position, or material composition. Always verify compatibility with your specific vehicle using our vehicle selector, or contact our customer service team for assistance.
Related categories
Common OE numbers for this part
Common original equipment numbers linked to stocked alternatives.
