RIDEX 8A0486 Engine Air Filter – MX-5 Mk3 NC 1.8 & 2.0
Replacement RIDEX panel-style engine air filter for Mazda MX-5 Mk3/NC 1.8 and 2.0-litre petrol models.
The engine air filter removes dust, road debris and airborne contamination from the intake air before it reaches the engine. Keeping the filter clean helps maintain unrestricted airflow while protecting the airflow meter, throttle body and internal engine components from abrasive contamination.
MazSpec confirms this exact filter for both 1.8 and 2.0 Mazda MX-5 Mk3/NC applications through the complete 2005–2014 production range. MX-5 Mk1/NA, Mk2/NB/NB-FL and Mk4/ND models use different air-filter specifications and are excluded.
- Part type: Engine air filter / panel filter
- Filter type: Filter insert / air recirculation filter
- Shape: Rectangular
- Length: 303 mm
- Width: 161 mm
- Height: 43 mm
- Filtration efficiency: Over 99%
- Airflow characteristic: Low airflow resistance
- Approximate weight: 0.172 kg
- EAN: 4059191171705
- Quantity supplied: 1 air filter
- Brand: RIDEX
- Part No.: 8A0486
Fitment advice: Confirmed for MX-5 Mk3/NC 1.8 and 2.0 petrol models using Mazda air-filter references LFG1-13-Z40 and LFG1-13-Z409A. Check the existing filter dimensions and OE reference where vehicle history or intake modifications are unknown.
Common replacement reasons: Routine servicing, visibly dirty or blocked filter media, increased intake restriction, reduced airflow, contamination with oil or moisture, or replacement where service history is unknown.
Related items to inspect: Check the airbox for dirt or debris, inspect the intake hose and clamps for cracks or leakage and examine the mass-air-flow sensor and throttle-body area where appropriate.
Useful tools / consumables: Basic hand tools as required for the airbox fasteners, clean cloths and a vacuum or suitable means of removing loose debris from the airbox.
Difficulty guide: DIY Difficulty: Easy. Air-filter replacement is a routine service operation and normally requires no specialist equipment.
Why RIDEX? RIDEX air filters provide a cost-effective aftermarket service replacement using application-specific dimensions and filter media designed for effective filtration with low airflow resistance.
What’s in the box: One RIDEX 8A0486 rectangular replacement engine air-filter element.
Installation notes: Open the airbox and remove the existing filter without allowing loose debris to fall into the clean side of the intake. Remove contamination from the airbox, install the replacement element in the correct orientation and ensure the sealing edge is fully seated. Refit the airbox securely and check that all intake hoses, clips and electrical connections disturbed during servicing are correctly reconnected.
| Make | Model | Sub Variant | Chassis / Code | Years | Power (PS) | Engine Codes | Fuel | Transmission | Notes |
|---|---|---|---|---|---|---|---|---|---|
| Mazda | MX-5 Mk3 / Mk3.5 / Mk3.75 NC | 1.8 | NC18 | 03/2005–12/2014 | 126 | L8-VE / L8-DE | Petrol | Manual | Rectangular panel air filter |
| Mazda | MX-5 Mk3 / Mk3.5 / Mk3.75 NC | 2.0 | NC18 / NC | 07/2005–12/2014 | 160–170 | LF-VE / LFG7 / LFY7 / LFG8 / LFZD | Petrol | Manual / automatic where fitted | Includes applicable Sport / 6-speed variants |
| Vehicle Manufacturer | OE Reference Number |
|---|---|
| Mazda | LFG1-13-Z40 |
| Mazda | LFG1-13-Z409A |