This billet aluminium adaptor gets rid of the oil bypass found in Chevrolet engines which prevents unfiltered oil from entering back into the engine. A spin-on type filter can then be used.

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Proflow Universal Oil Sandwich Adaptor, Low Profile, AN10 ORB Ports, 2 x 1/8" NPT, Plugged Ports, With Various Adaptors, Billet Aluminium, Black

Proflow Universal Oil Sandwich Adaptor, Low Profile, AN10 ORB Ports, 2 x 1/8" NPT, Plugged Ports, With Various Adaptors, Billet Aluminium, Black

$138.03