Product Overview

The engine air filter, OEM number 13718507320, is fitted across the BMW 2, 3, and 4 Series lineup built on the F-series platform, covering the F22/F23 228i, F30/F31 320i and 328i, and F32/F33/F34/F36 428i, including xDrive variants and the 3 Series GT. Since this single filter spans three model series and both coupe, sedan, wagon, and Gran Turismo body styles, it's a genuinely high-turnover part for anyone stocking BMW service items.

Worn or clogged units typically show up as reduced engine power, lower fuel economy, or a rough idle caused by restricted airflow. GSK Auto manufactures this air filter to OEM specification at our Ningbo, China facility, with every unit tested before packing. We supply at wholesale volume with low MOQ and support private label packaging, with our team available to confirm fitment before shipping.

Replacement OEM Numbers

Cross-Reference OEM Number

13718511668, 13717588071, 13717600534

(Confirm against your VIN or chassis code before ordering - this filter spans multiple F-series chassis codes and body styles, so it's worth double-checking the exact model and year before ordering at volume.)

What Is an Engine Air Filter?

Function: The engine air filter removes dust, debris, and other airborne particles from the air entering the engine, protecting internal components from abrasive wear while allowing the engine to breathe properly.

Working Principle: Air drawn into the engine passes through the filter's pleated media, which traps particulate matter while allowing a high volume of clean air through to support proper combustion, particularly important on turbocharged engines where airflow directly affects boost response.

Importance: On BMW's turbocharged N20/N26 engine family, clean airflow is especially important, since restricted intake air can affect both naturally aspirated low-load driving and boost delivery under load.

Common Failures & Signs: Clogging from accumulated dust and debris restricting airflow. Reduced engine power, particularly noticeable during acceleration. Lower fuel economy caused by the engine compensating for restricted airflow. Rough idle or hesitation linked to insufficient air supply.

Key Features

OEM-standard fitment - matches factory filter dimensions and housing fit for the 13718507320 application.

Precision manufacturing - pleated filter media sized for effective particle capture without restricting airflow.

Long service life - built to handle a full service interval of daily-driving use.

Excellent fitment - direct replacement, no modification required.

Corrosion resistance - frame construction resists moisture exposure.

Reliable performance - consistent airflow and filtration matching factory specification.

Benefits

Importers - high-turnover part covering three BMW model series, simplifying inventory.

Wholesalers - steady demand from widely used BMW 2, 3, and 4 Series platforms.

Repair Shops - OEM-spec fitment supports quick, routine service work.

Distributors - private label packaging available for building a branded catalog.

End Customers - restored engine performance and fuel efficiency.

Packaging & Shipping

Standard export packaging, sized for an air filter component. Customized packaging available for distributor branding. OEM-style and private label printing on request. Container loading handled directly, with mixed-SKU consolidation for smaller orders. Worldwide shipping to Europe, North America, South America, the Middle East, Africa, and Southeast Asia.

Frequently Asked Questions

• What does this engine air filter do?

It removes dust and debris from air entering the engine, protecting internal components and supporting proper combustion and turbo response.

• Which vehicles use OEM 13718507320?

BMW F22/F23 228i, F30/F31 320i and 328i, and F32/F33/F34/F36 428i, including xDrive and 3 Series GT variants - confirm exact chassis code and model year before ordering.

• Can GSK Auto supply OEM-standard parts?

Yes, this air filter is manufactured to match OEM specification for fitment and filtration performance.

• What's the MOQ for wholesale orders?

MOQ varies by order type - contact us directly for current wholesale tiers.

• Do you export worldwide?

Yes, we ship to Europe, North America, South America, the Middle East, Africa, and Southeast Asia.

• Can you customize packaging?

Yes, OEM-style and private label printing are available.

• How do I know if my engine air filter needs replacing?

Common signs include reduced power, lower fuel economy, and rough idle linked to restricted airflow.

Why Choose GSK Auto

GSK Auto manufactures factory-direct, keeping pricing tied to production cost. This air filter is built to OEM specification and tested before packing. We support low MOQ, private label packaging, and worldwide shipping, with our technical team available to confirm fitment before you order.

Call to Action

Sourcing engine air filters for the BMW 2, 3, or 4 Series? Contact GSK Auto for a wholesale quote, catalog, or OEM/private label cooperation.