Log In to your account to see full product details, availability, and pricing.
GM Aluminum Adapter - 1/2 NPT x 20mm O-Ring
Log In to your account to see price and availability.
For adapting GM high performance radiator oil cooler lines to 1/2" NPT male to 20mm female O-ring fittings.
For smaller adapter (1/2 NPT x 3/4-18 UNS O-ring) see Z50610
