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Details
| Specification | Value |
|---|---|
| Brand | KNECHT |
| MPN | lx500 |
| Category | Air cleaner |
| Length [mm] | 233.0 mm |
| Width [mm] | 236 mm |
| Height [mm] | 42.1 mm |
| Packaging length [cm] | 24.0 cm |
| Packaging width [cm] | 5.10 cm |
| Packaging height [cm] | 24.00 cm |
| Net Weight [g] | 214 g |
OE/OEM numbers (5)
Search by this OE number to find compatible parts
- BMW—1247404
- BMW—1247405
- BMW—13711247405
- BMW—13721247404
- BMW—13721247405
Where this part fits
Original-fit position for OE 1247404. The red ring marks where this part installs on the vehicle.
About this product
When air cleaner performance matters, the KNECHT LX 500 delivers — built to the same dimensional and material standards as the original part it replaces. The part is built to the following specification: Length [mm]: 233, 0 mm, Width [mm]: 236 mm, Height [mm]: 42, Steel mm, Filter type: Stainless Steel, Packaging length [cm]: 24, 0 cm. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. Compatible with BMW 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: 120035, 1247404, 1247405, 13711247405 and 58 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 (62)
Show all 62 OE numbers
Air cleaner KNECHT LX 500 — compatible car models
| Car models | BMW: 3 Compact (E36), 3 Convertible (E36), 3 Coupe (E36), 3 (E36), 3 Touring (E36), Z3 Roadster (E36) |
|---|---|
| Engines | 316 g; 318 i; 316 i; 1.8 i |
| Year of manufacture | 1990-2003 |
| Manufacturer article number (MPN) | LX 500 |
| OE part numbers | 1247404, 1247405, 13711247405, 13721247404, 13721247405 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
KNECHT lx500 Air cleaner. Filter type: 9. Height [mm]: 42,1 mm. Length [mm]: 233,0 mm. Net Weight [g]: 214 g. Packaging height [cm]: 24,00 cm. Packaging length [cm]: 24,0 cm. Packaging width [cm]: 5,10 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 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 KNECHT Air cleaner have?
This KNECHT Air cleaner has the following specifications: Length [mm]: 233,0 mm; Width [mm]: 236 mm; Height [mm]: 42,1 mm; Filter type: 9; Packaging length [cm]: 24,0 cm; Packaging width [cm]: 5,10 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: 1247404, 1247405, 13711247405, 13721247404, 13721247405. 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 £38.99. 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 1247404?
Yes, this KNECHT Air cleaner is a direct replacement for OE part number 1247404. 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 500 the same as the KNECHT LX 1000?
No, while both are Air cleaner parts, they are different products. The KNECHT LX 500 has Length [mm]: 233,0 mm, Width [mm]: 236 mm, Height [mm]: 42,1 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.
