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Details
| Specification | Value |
|---|---|
| Brand | KNECHT |
| MPN | lx3987 |
| Category | Air cleaner |
| Length [mm] | 238.0 mm |
| Width [mm] | 205 mm |
| Height [mm] | 47.3 mm |
| Packaging length [cm] | 21.5 cm |
| Packaging width [cm] | 5.50 cm |
| Packaging height [cm] | 24.50 cm |
| Net Weight [g] | 230 g |
OE/OEM numbers (4)
Search by this OE number to find compatible parts
- CITROËN / DS / PEUGEOT—1638027780
- GENERAL MOTORS / OPEL / VAUXHALL—3639671
- CITROËN / DS / OPEL / PEUGEOT / VAUXHALL—9802348680
- TOYOTA—SU001A3798
Where this part fits
Original-fit position for OE 3639671. The red ring marks where this part installs on the vehicle.
About this product
The KNECHT Air cleaner (LX 3987) 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: Length [mm]: 238, 0 mm, Width [mm]: 205 mm, Height [mm]: 47, Cast Iron mm, Filter type: Stainless Steel, Packaging length [cm]: 21, Rubber cm. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. Verified to fit CITROËN, DS, FIAT, OPEL and 3 other makes 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: 101647, 11123210043, 153071762404, 154072382518 and 34 more. Matching these numbers confirms a like-for-like replacement with no loss of function. KNECHT 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 (35)
Show all 35 OE numbers
Air cleaner KNECHT LX 3987 — compatible car models
| Car models | CITROËN: BERLINGO Box Body/MPV (B9), BERLINGO Box Body/MPV (K9), BERLINGO (ER, EC), BERLINGO MULTISPACE (B9), BERLINGO Platform/Chassis (B9), C3 AIRCROSS II (2R, 2C), C3 AIRCROSS II Van (2C, 2R), C3 II Hatchback Van (SC), C3 III (SX), C3 III Van (SX, SY) (+20 more) |
|---|---|
| Engines | 1.6 BlueHDi 100; 1.6 BlueHDi 100 (2CBHYB); 1.6 BlueHDI 100; 1.6 BlueHDi; BlueHDi 100; BlueHDi 120; 1.6 BlueHDi 115; 1.6 BlueHDi 120; 1.6 BlueHDi 95 |
| Year of manufacture | 2008-2018 |
| Manufacturer article number (MPN) | LX 3987 |
| OE part numbers | 1638027780, 3639671, 9802348680, SU001A3798 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
KNECHT lx3987 Air cleaner. Filter type: 9. Height [mm]: 47,3 mm. Length [mm]: 238,0 mm. Net Weight [g]: 230 g. Packaging height [cm]: 24,50 cm. Packaging length [cm]: 21,5 cm. Packaging width [cm]: 5,50 cm. Seal Material: 234
- 1x Air cleaner
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 Air cleaner compatible with my car?
This Air cleaner fits CITROËN, DS, FIAT, OPEL, PEUGEOT and 2 more 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 KNECHT Air cleaner have?
This KNECHT Air cleaner has the following specifications: Length [mm]: 238,0 mm; Width [mm]: 205 mm; Height [mm]: 47,3 mm; Filter type: 9; Packaging length [cm]: 21,5 cm; Packaging width [cm]: 5,50 cm. Check the full specifications table above for complete details.
What OE part numbers does this Air cleaner replace?
This Air cleaner replaces OE part numbers: 1638027780, 3639671, 9802348680, SU001A3798. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Air cleaner cost?
This KNECHT Air cleaner is available for £22.99. Air cleaner prices vary depending on brand, specifications, and vehicle compatibility. KNECHT parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my Air cleaner?
A dirty air filter can cause reduced fuel economy, engine misfires, unusual engine sounds, or reduced horsepower. Most manufacturers recommend replacement every 15,000-30,000 miles, or more frequently in dusty conditions.
What tools do I need to replace a Air cleaner?
Tools needed: none for most vehicles (airbox clips open by hand); some require a flat-head screwdriver or T20 Torx. Difficulty: Easy DIY. Safety warning: Ensure the airbox is fully sealed after fitting -- an air leak downstream of the mass airflow sensor will cause running problems and potential fuel mixture faults.
Can I use this part as a replacement for OE 1638027780?
Yes, this KNECHT Air cleaner is a direct replacement for OE part number 1638027780. 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 KNECHT LX 3987 the same as the KNECHT LX 1000?
No, while both are Air cleaner parts, they are different products. The KNECHT LX 3987 has Length [mm]: 238,0 mm, Width [mm]: 205 mm, Height [mm]: 47,3 mm. The KNECHT LX 1000 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.
