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Details
| Specification | Value |
|---|---|
| Brand | KNECHT |
| MPN | lx739 |
| Category | Air cleaner |
| Height [mm] | 414.8 mm |
| Diameter 4 [mm] | 127.0 mm |
| Outer Diameter [mm] | 346.0 mm |
| Outer Diameter 1 [mm] | 282 mm |
| Inner Diameter 1 [mm] | 127 mm |
| Packaging length [cm] | 35.3 cm |
| Packaging width [cm] | 35.30 cm |
| Packaging height [cm] | 42.50 cm |
| Net Weight [g] | 4339 g |
OE/OEM numbers (2)
Search by this OE number to find compatible parts
- MERCEDES-BENZ—0040940204
- MERCEDES-BENZ—A0040940204
Where this part fits
Original-fit position for OE A0040940204. The red ring marks where this part installs on the vehicle.
About this product
The KNECHT Air cleaner (LX 739) 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]: 414, Carbon mm, Diameter 4 [mm]: 127, 0 mm, Outer Diameter [mm]: 346, 0 mm, Filter type: Stainless Steel, Outer Diameter 1 [mm]: 282 mm. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. This part supersedes original equipment references: 0040940204, 0114029, 0343210010, 120027 and 32 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
Vehicle matches are curated from manufacturer data
Confirmed fits based on manufacturer data.Equivalent products (38)
Show all 38 OE numbers
Air cleaner KNECHT LX 739 — compatible car models
| Manufacturer article number (MPN) | LX 739 |
|---|---|
| OE part numbers | 0040940204, A0040940204 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
KNECHT lx739 Air cleaner. Diameter 4 [mm]: 127,0 mm. Filter type: 9. Height [mm]: 414,8 mm. Inner Diameter 1 [mm]: 127 mm. Net Weight [g]: 4339 g. Outer Diameter 1 [mm]: 282 mm. Outer Diameter [mm]: 346,0 mm. Packaging height [cm]: 42,50 cm
- 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?
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 Air cleaner fits. All fitment data is verified through TecDoc.
What specifications does this KNECHT Air cleaner have?
This KNECHT Air cleaner has the following specifications: Height [mm]: 414,8 mm; Diameter 4 [mm]: 127,0 mm; Outer Diameter [mm]: 346,0 mm; Filter type: 9; Outer Diameter 1 [mm]: 282 mm; Inner Diameter 1 [mm]: 127 mm. 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: 0040940204, A0040940204. 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 £99.99. 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 0040940204?
Yes, this KNECHT Air cleaner is a direct replacement for OE part number 0040940204. 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 739 the same as the KNECHT LX 1000?
No, while both are Air cleaner parts, they are different products. The KNECHT LX 739 has Height [mm]: 414,8 mm, Diameter 4 [mm]: 127,0 mm, Outer Diameter [mm]: 346,0 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.
