Hybrid Racing PRB RWD Coolant Port Adapter for K20A/K20Z1/K24A1
Hybrid Racing RWD PRB Coolant Housing Adapter - K20A, K20A2, K20A3, K20Z1 & K24A1
Put a K-series in a rear-wheel-drive chassis and you find out fast how little room there is between the back of the head and the firewall. The factory coolant outlet points right into that space, which is the last direction you want it going. This adapter turns the radiator outlet out the side of the cylinder head instead, so you get your firewall clearance back and a much more sensible path for your hoses. It's compact, machined from a single piece of 6061, and built specifically for RWD conversions rather than adapted into one
Most important thing on this page, so don't skip past it. Because the radiator outlet exits from the side of the cylinder head, this adapter is not compatible with standard front-wheel-drive K-series intake manifolds. The outlet will physically interfere with the throttle body. There's no working around it with different hoses or clocking.
This has to be used with a rear-wheel-drive-specific intake manifold that provides clearance for the side-exit outlet. So confirm what manifold you're running, or what you're planning to buy, before you order this. If you're still on a factory FWD manifold, our standard PRB coolant housing adapter is the one that fits your setup.
Key Features:
- Compatible with RWD K Swap Chassis
- Fits K20A2, K20A3, K20Z1, and K24A1 Engines
- Works with -16 ORB to Barbed Hose or -16 AN Fittings
- Uses OE-Style Rubber Gasket
FITMENT
| Engine | Originally Found In | Years |
|---|---|---|
| K20A / K20A2 / K20A3 | Acura RSX | 2002-2006 |
| K20A3 / K20Z1 | Honda Civic Si (EP3) | 2002-2005 |
| K24A1 | Honda CR-V | 2002-2006 |