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Details
| Specification | Value |
|---|---|
| Brand | TOPRAN |
| Category | Filter, interior air |
| Length [mm] | 215 mm |
| Width [mm] | 217 mm |
| Height [mm] | 26 mm |
OE/OEM numbers (2)
Search by this OE number to find compatible parts
- SMART—451 830 00 18
- SMART—A451 830 00 18
Where this part fits
Original-fit position for OE 4518300018. The red ring marks where this part installs on the vehicle.
About this product
TOPRAN Filter, interior air (407 944) is manufactured to OEM tolerances, ensuring a direct-fit replacement that restores your vehicle to factory specification without any modification. Technical specifications — Length [mm]: 215 mm, Width [mm]: 217 mm, Height [mm]: 26 mm, Vehicle Equipment: 0, Filter type: 66 — are verified against the OEM data sheet to guarantee fitment accuracy and performance parity with the original equipment. Compatible with SMART 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: 012 320 0039, 02.59.149, 10 93 7788, 1531732 and 125 more. Matching these numbers confirms a like-for-like replacement with no loss of function. TOPRAN 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.
About TOPRAN
TOPRAN, part of the Hans Thomsen Group headquartered in Hamburg, Germany, is a growing independent aftermarket brand focused on providing quality parts at accessible prices. TOPRAN offers a comprehensive range covering engine, cooling, electrical, braking, and body components for European vehicles. All TOPRAN products are manufactured to meet OE specifications and undergo quality testing before distribution. Combining German quality management with competitive pricing, TOPRAN is an excellent choice for cost-conscious motorists and workshops who do not want to compromise on part quality.
Suitable cars
Equivalent products (133)
Show all 133 OE numbers
Filter, interior air TOPRAN 407 944 — compatible car models
| Car models | SMART: FORTWO Cabrio (451), FORTWO Coupe (451) |
|---|---|
| Engines | 0.8 CDi (451.400); 0.8 CDi (451.300) |
| Year of manufacture | 2007 |
| Manufacturer article number (MPN) | 407 944 |
| OE part numbers | 451 830 00 18, A451 830 00 18 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
TOPRAN 407944 Filter, interior air. Filter type: 66. Filter type: 8. Filter type: 9. Frame Material: 210. Height [mm]: 26 mm. Length [mm]: 215 mm. Vehicle Equipment: 0. Width [mm]: 217 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?
This Filter, interior air fits SMART 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 TOPRAN Filter, interior air have?
This TOPRAN Filter, interior air has the following specifications: Length [mm]: 215 mm; Width [mm]: 217 mm; Height [mm]: 26 mm; Vehicle Equipment: 0; Filter type: 66; Filter type: 8. 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: 451 830 00 18, A451 830 00 18. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Filter, interior air cost?
This TOPRAN Filter, interior air is available for £9.99. Filter, interior air prices vary depending on brand, specifications, and vehicle compatibility. TOPRAN 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 451 830 00 18?
Yes, this TOPRAN Filter, interior air is a direct replacement for OE part number 451 830 00 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.
