Hybrid Racing PRB RWD Coolant Port Adapter for K20A/K20Z1/K24A1

Hybrid Racing RWD PRB Coolant Housing Adapter turns the radiator outlet out the side of the cylinder head instead of toward the firewall, restoring critical clearance in tight rear-wheel-drive K-series swaps. Machined from a single piece of 6061 aluminum and black anodized, it features a -16 ORB outlet for hose or AN plumbing, a 1/8" NPT coolant temp sensor port, an OEM-style rubber seal (no RTV), and retains the factory thermostat bypass circuit. Built for K20A, K20A2, K20A3, K20Z1, and K24A1 engines in RWD conversions (S2000, 240SX, BRZ, BMW, Miata, etc.), it requires an RWD-specific intake manifold and is not compatible with standard FWD manifolds.