BMW B48 F20, F21, F22, F23, F30, F31, F32, F33, F34, F35, F36 MAF Housing

Upgrade your BMW B46 or B48 intake system with this high-flow filter adapter. Designed to fit an 89 mm (3-inch) performance air filter, it replaces the restrictive factory upper airbox section and creates a cleaner, more open intake setup.

The adapter uses the factory lower airbox mounting point and engine-cover locating pin for an OEM-style installation. It is ideal for owners looking to run a larger performance filter, improve induction sound, and give the engine bay a sharper performance appearance.

Features

• Designed for BMW B46 and B48 engine platforms
• Fits 89 mm / 3-inch performance air filters
• Retains the factory lower airbox mounting point
• Uses the engine-cover locating pin for secure positioning
• Supports a cleaner, more open intake setup
• Improves intake sound and performance styling
• Lightweight, heat-resistant, UV-stable ASA construction

Material

Premium ASA plastic

Compatibility

BMW B46 and B48 models, including:

• F20 / F21
• F22 / F23
• F30 / F31
• F32 / F33 / F34 / F35 / F36

What’s Included

1 × BMW B46/B48 High-Flow Filter Adapter

Important: Performance air filter is not included. Please confirm your engine type, airbox configuration, and filter inlet diameter before ordering.

Shipping: 5–7 working days.

Returns: Unused items may be returned within 14 days. Return shipping costs are the customer’s responsibility. Refunds cover the product price only and exclude shipping fees.