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Details
| Specification | Value |
|---|---|
| Brand | FILTRON |
| MPN | k1222a-2x |
| Category | Filter, interior air |
| Length [mm] | 189 mm |
| Width [mm] | 184 mm |
| Height [mm] | 40 mm |
OE numbers (10)
Search by this OE number to find compatible parts
- MERCEDES-BENZ—203 830 03 18
- MERCEDES-BENZ—203 830 04 18
- MERCEDES-BENZ—203 830 05 18
- MERCEDES-BENZ—203 830 12 00
- MERCEDES-BENZ—203 830 21 18
- MERCEDES-BENZ—A 203 830 03 18
- MERCEDES-BENZ—A 203 830 04 18
- MERCEDES-BENZ—A 203 830 05 18
- MERCEDES-BENZ—A 203 830 12 00
- MERCEDES-BENZ—A 203 830 21 18
Where this part fits
Original-fit position for OE 2038300518.
About this product
Sourced from FILTRON, this filter, interior air (K 1222A-2x) combines precision engineering with durable materials to meet the demands of everyday driving and extended service intervals. Technical specifications — Length [mm]: 189 mm, Width [mm]: 184 mm, Height [mm]: 40 mm, Filter type: Carbon, EU General Product Safety Regulation (GPSR): Aluminium — are verified against the OEM data sheet to guarantee fitment accuracy and performance parity with the original equipment. This part supersedes original equipment references: 012 320 0012/S, 1 987 435 536, 203 830 03 18, 203 830 04 18 and 47 more. Matching these numbers confirms a like-for-like replacement with no loss of function. FILTRON 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.
Suitable cars
Vehicle matches are curated from manufacturer data
Confirmed fits based on manufacturer data.Equivalent products (41)
Show all 41 OE numbers
Filter, interior air FILTRON K 1222A-2x — compatible car models
| Manufacturer article number (MPN) | K 1222A-2x |
|---|---|
| OE part numbers | 203 830 03 18, 203 830 04 18, 203 830 05 18, 203 830 12 00, 203 830 21 18, A 203 830 03 18, A 203 830 04 18, A 203 830 05 18, A 203 830 12 00, A 203 830 21 18 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
FILTRON k1222a-2x Filter, interior air. EU General Product Safety Regulation (GPSR): 2. Filter type: 8. Height [mm]: 40 mm. Length [mm]: 189 mm. Width [mm]: 184 mm
- 1x Filter, interior air
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 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 FILTRON Filter, interior air have?
This FILTRON Filter, interior air has the following specifications: Length [mm]: 189 mm; Width [mm]: 184 mm; Height [mm]: 40 mm; Filter type: 8; EU General Product Safety Regulation (GPSR): 2. 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: 203 830 03 18, 203 830 04 18, 203 830 05 18, 203 830 12 00, 203 830 21 18, A 203 830 03 18, A 203 830 04 18, A 203 830 05 18 and 2 more. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Filter, interior air cost?
This FILTRON Filter, interior air is available for £47.99. Filter, interior air prices vary depending on brand, specifications, and vehicle compatibility. FILTRON 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 203 830 03 18?
Yes, this FILTRON Filter, interior air is a direct replacement for OE part number 203 830 03 18. It is manufactured to meet or exceed original equipment specifications, ensuring proper fitment and performance. All cross-reference data is verified through TecDoc.
Related categories
Common OE numbers for this part
Common original equipment numbers linked to stocked alternatives.
