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Details
| Specification | Value |
|---|---|
| Brand | TOPRAN |
| Operating Mode | EL |
| Number of pins | 2 -pin connector |
| Rated Voltage [V] | 12 V |
OE/OEM numbers (4)
Search by this OE number to find compatible parts
- MERCEDES-BENZ—000 140 46 85
- MERCEDES-BENZ—000 140 51 85
- MERCEDES-BENZ—A000 140 46 85
- MERCEDES-BENZ—A000 140 51 85
Where this part fits
Original-fit position for OE 0001405185. The red ring marks where this part installs on the vehicle.
About this product
The TOPRAN Secondary Air Pump (409 657) 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: Operating Mode: Electric, Number of pins: Aluminium -pin connector, Rated Voltage [V]: Zinc V. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. Verified to fit MERCEDES-BENZ 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: 000 140 46 85, 000 140 51 85, 0001405185, 0 580 000 025 and 25 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 from our UK warehouse with a 30-day money-back guarantee and free 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 (27)
Show all 27 OE numbers
Secondary Air Pump TOPRAN 409 657 — compatible car models
| Car models | MERCEDES-BENZ: C-CLASS Coupe (CL203), C-CLASS T-Model (S203), C-CLASS T-Model (S204), C-CLASS (W203), C-CLASS (W204), CLK (C209), CLK Convertible (A209), CLS (C219), E-CLASS Convertible (A207), E-CLASS Coupe (C207) (+20 more) |
|---|---|
| Engines | C 230 (203.752); C 230 (203.252); C 230 (204.252); C 230 (203.052); C 230 (204.052); CLK 280 (209.354); CLK 280 (209.454); CLS 280 (219.354); E 350 (207.456); E 350 (207.356); 350 CGI (211.257); E 300 (212.254); E 230 (211.052); E 300 (212.054); GL 450 4-matic (164.871) (+15 more) |
| Year of manufacture | 2000-2020 |
| Manufacturer article number (MPN) | 409 657 |
| OE part numbers | 000 140 46 85, 000 140 51 85, A000 140 46 85, A000 140 51 85 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
TOPRAN 409657 . Number of pins: 2 -pin connector. Operating Mode: EL. Rated Voltage [V]: 12 V
- 1x Secondary Air Pump
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 Secondary Air Pump compatible with my car?
This Secondary Air Pump fits MERCEDES-BENZ 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 Secondary Air Pump have?
This TOPRAN Secondary Air Pump has the following specifications: Operating Mode: EL; Number of pins: 2 -pin connector; Rated Voltage [V]: 12 V. Check the full specifications table above for complete details.
What OE part numbers does this Secondary Air Pump replace?
This Secondary Air Pump replaces OE part numbers: 000 140 46 85, 000 140 51 85, A000 140 46 85, A000 140 51 85. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Secondary Air Pump cost?
This TOPRAN Secondary Air Pump is available for £121.99. Secondary Air Pump 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 Secondary Air Pump?
Regular inspection of your Secondary Air Pump 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 Secondary Air Pump?
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 Secondary Air Pump fitted by a professional mechanic.
Can I use this part as a replacement for OE 000 140 46 85?
Yes, this TOPRAN Secondary Air Pump is a direct replacement for OE part number 000 140 46 85. 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 409 657 the same as the TOPRAN 114 283?
No, while both are Secondary Air Pump parts, they are different products. The TOPRAN 409 657 has Operating Mode: EL, Number of pins: 2 -pin connector, Rated Voltage [V]: 12 V. The TOPRAN 114 283 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.
