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Details
| Specification | Value |
|---|---|
| Brand | TOPRAN |
| Length [mm] | 55 mm |
| Thread Size | M 8 |
| DIN/ISO | DIN 976 |
| Thread Pitch [mm] | 1.25 mm |
OE numbers (4)
Search by this OE number to find compatible parts
- BMW—1112 1 275 853
- BMW—1112 7 791 553
- CITROËN / PEUGEOT—5703 A3
- VOLVO—985763
Where this part fits
Original-fit position for OE 5703A3.
About this product
TOPRAN Bolt Exhaust Manifold (503 664) is manufactured to OEM tolerances, ensuring a direct-fit replacement that restores your vehicle to factory specification without any modification. Technical specifications — Length [mm]: 55 mm, Thread Size: M 8, DIN/ISO: DIN 976, Thread Pitch [mm]: Steel, 25 mm — are verified against the OEM data sheet to guarantee fitment accuracy and performance parity with the original equipment. Compatible with BMW, CITROËN, PEUGEOT, VOLVO vehicles; use the vehicle selector above to confirm exact fitment for your make, model, and engine variant. Fitment data is sourced from TecDoc, the authoritative European parts catalogue. This part supersedes original equipment references: 1112 1 275 853, 1112 7 791 553, 5703 A3, 985763 and 4 more. Matching these numbers confirms a like-for-like replacement with no loss of function. TOPRAN 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.
About TOPRAN
TOPRAN, part of the Hans Thomsen Group headquartered in Hamburg, Germany, is a growing independent aftermarket brand focused on providing quality parts at accessible prices. TOPRAN offers a comprehensive range covering engine, cooling, electrical, braking, and body components for European vehicles. All TOPRAN products are manufactured to meet OE specifications and undergo quality testing before distribution. Combining German quality management with competitive pricing, TOPRAN is an excellent choice for cost-conscious motorists and workshops who do not want to compromise on part quality.
Suitable cars
Equivalent products (4)
Bolt Exhaust Manifold TOPRAN 503 664 — compatible car models
| Car models | BMW: 1 (E87), 3 Compact (E46), 3 Convertible (E46), 3 Convertible (E93), 3 Coupe (E46), 3 Coupe (E92), 3 (E30), 3 (E36), 3 (E46), 3 (E90) (+19 more); CITROËN: C5 III Break (RW) |
|---|---|
| Engines | 118 d; 318 td; 320 Cd; 325 d; 324 d; 325 td; 318 d; 324 td; 325 tds; 524 d; 524 td; 520 d; 525 td; 635 d; 725 tds (+5 more) |
| Year of manufacture | 1981-2017 |
| Manufacturer article number (MPN) | 503 664 |
| OE part numbers | 1112 1 275 853, 1112 7 791 553, 5703 A3, 985763 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
TOPRAN 503664 . DIN/ISO: DIN 976. Length [mm]: 55 mm. Thread Pitch [mm]: 1,25 mm. Thread Size: M 8
- 1x Bolt Exhaust Manifold
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 Bolt Exhaust Manifold compatible with my car?
This Bolt Exhaust Manifold fits BMW, CITROËN, PEUGEOT, VOLVO 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 TOPRAN Bolt Exhaust Manifold have?
This TOPRAN Bolt Exhaust Manifold has the following specifications: Length [mm]: 55 mm; Thread Size: M 8; DIN/ISO: DIN 976; Thread Pitch [mm]: 1,25 mm. Check the full specifications table above for complete details.
What OE part numbers does this Bolt Exhaust Manifold replace?
This Bolt Exhaust Manifold replaces OE part numbers: 1112 1 275 853, 1112 7 791 553, 5703 A3, 985763. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Bolt Exhaust Manifold cost?
This TOPRAN Bolt Exhaust Manifold is available for £1.99. Bolt Exhaust Manifold prices vary depending on brand, specifications, and vehicle compatibility. TOPRAN parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my Bolt Exhaust Manifold?
Regular inspection of your Bolt Exhaust Manifold 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 Bolt Exhaust Manifold?
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 Bolt Exhaust Manifold fitted by a professional mechanic.
Can I use this part as a replacement for OE 1112 1 275 853?
Yes, this TOPRAN Bolt Exhaust Manifold is a direct replacement for OE part number 1112 1 275 853. 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 TOPRAN 503 664 the same as the TOPRAN 116 763?
No, while both are Bolt Exhaust Manifold parts, they are different products. The TOPRAN 503 664 has Length [mm]: 55 mm, Thread Size: M 8, DIN/ISO: DIN 976. The TOPRAN 116 763 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.
