Square to Round Air Filter Adapter

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Your Price: $15.00

Adapter Material: High-performance PA6-CF (Carbon Fiber Reinforced Nylon)

Gasket Material: 0.125” thick commercial grade neoprene

Rectangular Side: Compatible with Mazda Bosch AFM bolt pattern

Round Side: 3” (76mm) outer diameter for universal compatibility

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Part Number: DDM-16-41

Availability: IN STOCK! Can ship right away!

DDMWorks Original Product!

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Description

DDMWorks Square to Round Air Filter Adapter – Precision Fit, Maximum Performance!

Upgrade your intake system with the DDMWorks Square to Round Adapter, engineered for a seamless connection between your high-flow air filter and Air Flow Meter (AFM). Designed to fit Mazda MX-5, Miata, 323, Familia, and other vehicles using the Mazda Bosch rectangular bolt-pattern AFM, this adapter ensures smooth airflow and optimized engine performance.

Why Choose the DDMWorks Square to Round Adapter?

Premium PA6-CF Material – Made from high-strength PA6-CF (Polyamide 6 with Carbon Fiber) for exceptional durability, heat resistance, and lightweight performance.

Thick commercial grade gasket – Made of 0.125” commercial grade neoprene

3” (76mm) Round Outlet – Perfectly sized for standard high-flow air filters and silicone intake hoses.

Optimized Airflow – Designed to reduce turbulence and improve intake efficiency, helping your engine breathe better.

Easy Installation – Rectangular side bolts directly to the Mazda Bosch AFM, while the round side connects to your 3” (76mm) air filter or intake hose.

Built for Performance – Ideal for turbo setups, cold air intakes, and high-performance applications.

Technical Specifications:

Adapter Material: High-performance PA6-CF (Carbon Fiber Reinforced Nylon)

Gasket Material: 0.125” thick commercial grade neoprene

Rectangular Side: Compatible with Mazda Bosch AFM bolt pattern

Round Side: 3” (76mm) outer diameter for universal compatibility

Color: Black This is the same adapter that we use in our cold air intakes. When you need to put a universal filter on the front of a 1.6L Miata air flow meter you will need one of these.

Applicable vehicles:

1990-1993 Mazda Miata MX5 1.6L
MX-5 Miata NA 2.0L
BMW 318i/iS (E30 1989-1995)
BMW 318ti (E36 1992-1995)
BMW 318iC (E30 1991-1992)
BMW E36 (1996-2000)
BMW 325e (E30 1985-1988)
BMW 325i/iS/iC (E30 1985-1991)
BMW 325iX (E30 1985-1990)
BMW 525i (E34 1989-1990)
BMW 528e (E28 1982-1988)
2.4L 1983-1989 Toyota Celica (Not compatible with Supra)

WARNING:This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm.
For more information go to www.P65Warnings.ca.gov.

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Square to Round Air Filter Adapter

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