Hybrid Racing RBC RWD Coolant Port Adapter for K20Z3/K24A/K24Z
Hybrid Racing RWD RBC Coolant Housing Adapter - K20Z3, K24A & K24Z7
Anyone who's put a K-series into a rear-wheel-drive chassis knows the problem: the firewall is right there. The standard coolant housing exits out the side of the head, and in a tight RWD bay that's exactly the wrong direction. This adapter fixes it by routing the coolant outlet straight off the back of the cylinder head instead, which is a much smarter path when you're fighting for every millimeter behind the motor. It's compact, it's machined from a single piece of 6061, and it turns a packaging headache into a clean, sensible cooling layout.
This is the most important thing on the page, so don't skip it. Because the coolant outlet exits from the rear of the cylinder head, this adapter is not compatible with standard transverse K-series intake manifolds, and that includes the factory PRB, RBC, and RRC manifolds. There simply isn't clearance behind the head with those manifolds in place.
This is built for use with rear-wheel-drive-specific intake manifolds that leave room behind the cylinder head. So confirm what manifold you're running, or planning to run, before you order. If you're still on a factory transverse manifold, this isn't your adapter yet, and if your RWD build is running the standard side-exit setup, our FWD RBC coolant housing adapter is the one you want.
Key Features:
- Designed for Rear Wheel Drive (RWD) K Swaps
- Compatible with K20Z3, K24A, K24Z Swapped RWD Chassis
- Works with -16 ORB to -16 AN or Barbed Hose Fittings
- Uses OE-Style Stamped Gasket
FITMENT
| Engine | Originally Found In | Years |
|---|---|---|
| K20Z3 | Honda Civic Si | 2006-2011 |
| K24A2 | Acura TSX | 2004-2008 |
| K24A4 | Honda Accord / Element | Accord 2003-2005, Element 2003-2006 |
| K24A8 | Honda Accord / Element | Accord 2006-2007, Element 2007-2011 |
| K24Z7 | Honda Civic Si / Acura ILX | Si 2012-2015, ILX 2013-2015 |