Product Details
This silicone adapter is used when fitting a Euro or 540 3.5″ HFM to the stock intake boot on an E36 M3 S50 or S52. The stock intake boot is sized for the stock 3.0″ HFM so a coupler is required to go from the new larger HFM to the smaller boot. Our HFM adapter includes a new hose clamp for the HFM end.
Not for sale or use in the state of California on any pollution-controlled vehicle as per the California Air Resources Board.















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