Bosch VAF to 3” Intake Adapter

Bosch VAF to 3” Intake Adapter | Flapper/Vane MAF Adapter – 76mm Air Filter Conversion

Upgrade your vintage airflow system with this Bosch VAF to 3" Intake Adapter, designed to allow modern 76mm (3-inch) cone air filters or intake tubing to be mounted directly to older Bosch flapper/vane-type MAF sensors.
With a bolt pattern of approximately 82 x 37mm, this adapter fits a wide range of 1980s–1990s vehicles, including classic BMW, VW, Mazda, Peugeot, and Toyota models.

Ideal for custom intake builds, turbo conversions, or replacing restrictive factory intake boxes — while preserving your vehicle’s original VAF sensor.

Important Use Note: Only use PLA for test fitting. For actual driving, use PETG, ABS, ASA, or any high-temp filament (minimum 80°C glass transition) to avoid collapse or damage under heat.

Features:

• Fits Bosch flapper/vane MAF (approx. 82x37mm bolt pattern)

• Converts to 3” (76mm) round intake or cone filter

• Compatible with many 1980s–1990s EFI vehicles

• Durable, heat-resistant material required for functional use

• Lightweight and compact – ideal for engine bay space management

• Great for turbo swaps, intake upgrades, or engine bay cleanup

• Easy installation with four bolts and clamp (not included)

Compatible Vehicles Include (but not limited to):

• BMW E30, E36

• VW Golf Mk2, Mk3

• Mazda MX-5 NA/NB, 323/Familia (BG)

• Peugeot 405 Mi16

• Toyota Celica, Supra, Soarer, Camry

Material: PETG, ABS, ASA, or similar (not PLA for long-term use)
Color: Black (finish may vary by filament type)