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Details
| Specification | Value |
|---|---|
| Brand | KNECHT |
| MPN | la581 |
| Category | Filter, interior air |
| Length [mm] | 583.0 mm |
| Width [mm] | 170 mm |
| Height [mm] | 47.3 mm |
| Packaging length [cm] | 17.5 cm |
| Packaging width [cm] | 5.20 cm |
| Packaging height [cm] | 59.00 cm |
| Net Weight [g] | 166 g |
OE/OEM numbers (6)
Search by this OE number to find compatible parts
- MERCEDES-BENZ—67582412
- MERCEDES-BENZ—9738350247
- MERCEDES-BENZ—A9738350247
- MERCEDES-BENZ—A 973 835 02 47 64
- MERCEDES-BENZ—A9738350547
- MERCEDES-BENZ—B67582412
Where this part fits
Original-fit position for OE 9738350247. The red ring marks where this part installs on the vehicle.
About this product
The KNECHT Filter, interior air (LA 581) 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]: 583, 0 mm, Width [mm]: 170 mm, Height [mm]: 47, Cast Iron mm, Filter type: 21, Packaging length [cm]: Fibreglass, Rubber cm. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. This part supersedes original equipment references: 0123190025, 133, 154705376920, 1987431156 and 21 more. Matching these numbers confirms a like-for-like replacement with no loss of function. KNECHT 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 from our UK warehouse with a 30-day money-back guarantee and free hassle-free returns.
Suitable cars
Vehicle matches are curated from manufacturer data
Confirmed fits based on manufacturer data.Equivalent products (21)
Show all 21 OE numbers
Filter, interior air KNECHT LA 581 — compatible car models
| Manufacturer article number (MPN) | LA 581 |
|---|---|
| OE part numbers | 67582412, 9738350247, A9738350247, A 973 835 02 47 64, A9738350547, B67582412 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
KNECHT la581 Filter, interior air. Filter type: 21. Height [mm]: 47,3 mm. Length [mm]: 583,0 mm. Net Weight [g]: 166 g. Packaging height [cm]: 59,00 cm. Packaging length [cm]: 17,5 cm. Packaging width [cm]: 5,20 cm. Width [mm]: 170 mm
- 1x Filter, interior air
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 Filter, interior air 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 Filter, interior air fits. All fitment data is verified through TecDoc.
What specifications does this KNECHT Filter, interior air have?
This KNECHT Filter, interior air has the following specifications: Length [mm]: 583,0 mm; Width [mm]: 170 mm; Height [mm]: 47,3 mm; Filter type: 21; Packaging length [cm]: 17,5 cm; Packaging width [cm]: 5,20 cm. Check the full specifications table above for complete details.
What OE part numbers does this Filter, interior air replace?
This Filter, interior air replaces OE part numbers: 67582412, 9738350247, A9738350247, A 973 835 02 47 64, A9738350547, B67582412. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Filter, interior air cost?
This KNECHT Filter, interior air is available for £26.99. Filter, interior air 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 Filter, interior air?
Replace when you notice reduced airflow from the HVAC system, persistent musty odours, increased noise when the fan is running, or fogging windows. Most cabin filters should be changed every 15,000-25,000 miles.
What tools do I need to replace a Filter, interior air?
Tools needed: flat-head screwdriver or 8mm socket may be required to remove the glove box (location and access varies by model -- check the vehicle handbook). Difficulty: Easy DIY. Safety warning: Wear a dust mask when removing a heavily contaminated cabin filter -- it traps fine particulates, allergens, and bacteria.
Can I use this part as a replacement for OE 67582412?
Yes, this KNECHT Filter, interior air is a direct replacement for OE part number 67582412. 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 LA 581 the same as the KNECHT LA 100?
No, while both are Filter, interior air parts, they are different products. The KNECHT LA 581 has Length [mm]: 583,0 mm, Width [mm]: 170 mm, Height [mm]: 47,3 mm. The KNECHT LA 100 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.
