Costa Oil Racing Filter CAF-31421U | CAF9204 Air Filter

OEM Replacement: 13 72 1 730 946
Fits: Select BMW models (commonly used in classic and performance models – confirm exact fitment)

✅ Why Choose Costa Over Standard Filters?

• 🔬 High-Efficiency Filtration (99%) – Captures fine particles like dust, pollen, and debris to keep your engine cleaner longer

• 💨 Performance-Focused Airflow – Improves throttle response, fuel economy, and overall power delivery

• 🛡️ Extended Filter Life – Delivers dependable filtration performance for up to 15,000 km / 9,300 miles

• 🔩 OEM+ Fit & Finish – Exact dimensions for a hassle-free installation without gaps or modifications

• 🌦️ All-Season Durability – Resistant to heat, moisture, and rough driving conditions

🔄 Replaces OEM Part:

• BMW Part No.: 13 72 1 730 946

✅ Outperforms many filters from FRAM, STP, WIX, Bosch, and other standard aftermarket brands.

🆚 Costa vs OEM & Generic Filters

📦 What’s Included:

• 1x Costa CAF-31421U / CAF9204 Premium Engine Air Filter (sealed for freshness)

🚗 Clean Air. Stronger Engine. Trusted Costa Quality.

Give your BMW the performance boost it deserves. The CAF-31421U / CAF9204 is the premium replacement for 13 72 1 730 946 — designed for drivers who demand cleaner air and longer-lasting protection.

🏁 Costa – Engineered for Performance. Priced for Value.