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Details
| Specification | Value |
|---|---|
| Brand | MANN-FILTER |
| MPN | cf2000-1 |
| Height [mm] | 449 mm |
| Outer Diameter [mm] | 178 mm |
| for article number | C 36 1820 |
| for article number | C 32 1500 |
| for article number | C 34 1500/1 |
| Outer Diameter 1 [mm] | 192 mm |
OE numbers (6)
Where this part fits
Original-fit position for OE 1665937. The red ring marks where this part installs on the vehicle.
About this product
The MANN-FILTER Secondary Air Filter (CF 2000/1) 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: Height [mm]: 449 mm, Outer Diameter [mm]: 178 mm, for article number: C 36 1820, for article number: C 32 1500, for article number: C 34 1500/1. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. This part supersedes original equipment references: 0 986 626 781, 1501262, 1534636, 1665937 and 45 more. Matching these numbers confirms a like-for-like replacement with no loss of function. MANN-FILTER is a recognised supplier of automotive filtration 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 MANN-FILTER
MANN-FILTER, part of the MANN+HUMMEL group founded in 1941 in Ludwigsburg, Germany, is one of the world's leading filtration specialists. The brand produces oil filters, air filters, fuel filters, cabin filters, and hydraulic filters for virtually every vehicle application. MANN-FILTER is an OE supplier to major manufacturers including Volkswagen, BMW, and Mercedes-Benz. With ISO/TS 16949 certification and products tested to the highest standards, MANN-FILTER ensures clean oil, air, and fuel for optimum engine protection and longevity.
Suitable cars
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Verifying part compatibility — check back shortly.Equivalent products (41)
Show all 41 OE numbers
Secondary Air Filter MANN-FILTER CF 2000/1 — compatible car models
| Manufacturer article number (MPN) | CF 2000/1 |
|---|---|
| OE part numbers | 1665937, 1665937-7, 1674100, 21041297, 23429027, 3162323 |
Compatibility check
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Please wait while we load vehicle compatibility information.Description and what's included
MANN-FILTER cf2000-1 . EU General Product Safety Regulation (GPSR): 2. Filter type: 9. for article number: C 32 1500. for article number: C 34 1500/1. for article number: C 36 1820. Height [mm]: 449 mm. Outer Diameter 1 [mm]: 192 mm. Outer Diameter [mm]: 178 mm
- 1x Secondary Air Filter
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 Secondary Air Filter compatible with my car?
Use the vehicle selector at the top of the page to check compatibility. Enter your car's make, model, and engine — we'll confirm whether this Secondary Air Filter fits. All fitment data is verified through TecDoc.
What specifications does this MANN-FILTER Secondary Air Filter have?
This MANN-FILTER Secondary Air Filter has the following specifications: Height [mm]: 449 mm; Outer Diameter [mm]: 178 mm; for article number: C 36 1820; for article number: C 32 1500; for article number: C 34 1500/1; Filter type: 9. Check the full specifications table above for complete details.
What OE part numbers does this Secondary Air Filter replace?
This Secondary Air Filter replaces OE part numbers: 1665937, 1665937-7, 1674100, 21041297, 23429027, 3162323. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Secondary Air Filter cost?
This MANN-FILTER Secondary Air Filter is available for £88.99. Secondary Air Filter prices vary depending on brand, specifications, and vehicle compatibility. MANN-FILTER 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 Filter?
Regular inspection of your Secondary Air Filter 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 Filter?
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 Filter fitted by a professional mechanic.
Can I use this part as a replacement for OE 1665937?
Yes, this MANN-FILTER Secondary Air Filter is a direct replacement for OE part number 1665937. 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 MANN-FILTER CF 2000/1 the same as the MANN-FILTER C 1342?
No, while both are Secondary Air Filter parts, they are different products. The MANN-FILTER CF 2000/1 has Height [mm]: 449 mm, Outer Diameter [mm]: 178 mm, for article number: C 36 1820. The MANN-FILTER C 1342 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.
