Hybrid Racing PRB FWD Coolant Port Adapter for RSX/EP3/CR-V

Hybrid Racing PRB Coolant Housing Adapter - K20A, K20A2, K20A3, K20Z1 & K24A1

The factory coolant outlet on a PRB head is a cluttered piece of hardware, and it drags the idle air assist valve along with it. This adapter replaces the whole arrangement with one compact billet housing that cleans up the back of your motor, deletes the idle air assist valve, and gives you a proper -16 ORB outlet to plumb however you want. It's machined from a single piece of 6061 and finished in black anodize, and it's the kind of part that makes a bay look sorted instead of stock.

This is one of the main reasons people grab this adapter. The idle air assist valve mounts to the factory coolant port, and on a built or swapped engine it's usually just clutter you don't need anymore. Installing this housing removes it from the equation entirely, which means fewer hoses, fewer fittings, and one less thing hanging off the back of the head. If you're tidying up a bay or simplifying a swap, that alone is worth the swap

There's a 1/8-inch NPT port machined into the top of the housing, which gives you a clean, purpose-built spot for a coolant temperature sensor. No inline radiator hose adapter, no separate sensor bung spliced into a hose, no compromise. Running a standalone ECU, a gauge, or an aftermarket sensor? It threads right in where it should be. Not using it? Cap it with the included plug and it disappears. Either way you've got the option built into the part rather than hunting for a place to put a sensor later.

Key Features:

• Compatible with DC5 RSX, EP3 Civic Si, and CR-V
  
• Fits PRB Style Heads on K20A, K20Z1, and K24A1 Engines
  
• Deletes Idle Air Assist Valve (IAAV)
  
• Works with -16 ORB to Barbed Hose or -16 AN Fittings
  

FITMENT