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Details
| Specification | Value |
|---|---|
| Brand | POLMO |
| MPN | 03.127 |
OE/OEM numbers (2)
Search by this OE number to find compatible parts
- BMW—18 12 1 723 507
- BMW—18 12 1 723 508
Where this part fits
Original-fit position for OE 18121723507. The red ring marks where this part installs on the vehicle.
About this product
The POLMO Repair Pipe Catalytic Converter (03.127) is a professional-grade replacement component engineered for long service life and reliable operation across all conditions your vehicle encounters. 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: 01.53870, 01.63980, 08.6032, 08.7038 and 11 more. Matching these numbers confirms a like-for-like replacement with no loss of function. POLMO 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 from our UK warehouse with a 30-day money-back guarantee and free hassle-free returns.
Suitable cars
Equivalent products (13)
Repair Pipe Catalytic Converter POLMO 03.127 — compatible car models
| Car models | BMW: 5 (E34), 5 Touring (E34) |
|---|---|
| Engines | 520 i 24V; 520 i |
| Year of manufacture | 1987-1996 |
| Manufacturer article number (MPN) | 03.127 |
| OE part numbers | 18 12 1 723 507, 18 12 1 723 508 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
POLMO 03.127
- 1x Repair Pipe Catalytic Converter
Shipping, returns, warranty
Free UK delivery on orders over £99.00. Express and standard shipping available.
- Standard delivery: 2-5 business days
- Express delivery: 1-2 business days
- 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 Repair Pipe Catalytic Converter compatible with my car?
This Repair Pipe Catalytic 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 POLMO Repair Pipe Catalytic Converter have?
The package includes the Repair Pipe Catalytic Converter as described in the specifications above. Check the "What's included" section for a full list of components. If mounting hardware or accessories are required, they will be listed separately.
What OE part numbers does this Repair Pipe Catalytic Converter replace?
This Repair Pipe Catalytic Converter replaces OE part numbers: 18 12 1 723 507, 18 12 1 723 508. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Repair Pipe Catalytic Converter cost?
This POLMO Repair Pipe Catalytic Converter is available for £153.99. Repair Pipe Catalytic Converter prices vary depending on brand, specifications, and vehicle compatibility. POLMO parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my Repair Pipe Catalytic Converter?
Regular inspection of your Repair Pipe Catalytic 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 Repair Pipe Catalytic 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 Repair Pipe Catalytic Converter fitted by a professional mechanic.
Can I use this part as a replacement for OE 18 12 1 723 507?
Yes, this POLMO Repair Pipe Catalytic Converter is a direct replacement for OE part number 18 12 1 723 507. 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 POLMO 03.127 the same as the POLMO 03.08?
No, while both are Repair Pipe Catalytic Converter parts, they are different products. The POLMO 03.127 has specific dimensions, material composition, and fitting requirements. The POLMO 03.08 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.
