Product Details

• Article Number: 424I0314 — Ridex premium combined particulate + activated carbon cabin air filter for the BMW X3 F25. The "I" suffix in the article number designates the activated-carbon impregnated variant (versus standard particulate-only filters).
• Filter Type: Particulate Filter + Activated Carbon Filter — dual-layer construction. The particulate layer (pleated paper media) captures pollen, dust, mould spores, brake dust, and fine particulates down to PM2.5. The activated carbon layer (impregnated charcoal granules) chemically adsorbs odours, exhaust fumes, and harmful gases including NOx, ozone, and volatile hydrocarbons. This combination dramatically improves cabin air quality compared to basic particulate-only filters — particularly noticeable when stuck in city traffic behind buses or trucks.
• Vehicle Equipment: For vehicles with AUTOMATIC climate control — designed specifically for BMW X3 F25 variants fitted with automatic climate control / dual-zone climate (the most common configuration). Verify your vehicle has automatic climate control before ordering — manually-controlled HVAC variants may use a different filter size.
• Length: 188 mm — one of the outer dimensions of the rectangular filter frame.
• Width: 187 mm — near-square format characteristic of BMW cabin filters. The two filters fit side-by-side in the cabin filter housing.
• Height: 25 mm — slim profile. Despite the compact thickness, the dual-layer media provides effective filtration over the recommended service life.
• Function: Cleans air entering the cabin through the HVAC system, protecting passengers from airborne irritants (pollen, dust, smog) and harmful gases (exhaust fumes, ozone). A neglected cabin filter develops mould and bacteria over time, causing musty odours when the AC is switched on and potentially triggering respiratory issues for sensitive passengers.
• Recommended Change Interval: 20,000 km — Ridex's recommended service interval. For Tanzanian driving conditions (dusty roads, frequent city traffic, high humidity), consider shortening to 12,000–15,000 km. Heavy dust exposure can clog cabin filters in half the standard service life.
• Condition: New — factory-sealed in Ridex packaging.
• Quantity Note: The BMW X3 F25 cabin filter housing accepts TWO filter elements installed side-by-side. A complete cabin filter service requires purchasing 2 units of this product. Worth noting clearly on the product page — customers buying only one will only do half the job.
• Manufacturer: RIDEX — AUTODOC's in-house OEM-equivalent aftermarket brand, produced in IATF 16949, ISO 26262, and VDA 6.3 certified factories. Ridex cabin filters use multi-layer pleated media with impregnated activated carbon for odour control.
• OEM Cross-References: BMW 64312284828, BMW 64 31 9 237 157, BMW 64319312317 — direct equivalents to these original BMW part numbers.
• Vehicle Compatibility: Designed for the BMW X3 F25 (2010 onwards) with automatic climate control. Always verify against your vehicle's VIN or existing filter part number before purchasing.
• Installation Note: Cabin filter access on the BMW X3 F25 is via the glove box — fold down the glove box, release the retainer clips, slide out both old filters, and insert the new ones. Pay attention to the airflow direction arrow printed on the filter frame — incorrect orientation reduces filtration effectiveness. A 5-minute DIY job requiring no tools.

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