Hybrid Racing 5/8" Barb Coolant Return Fitting for K Series Spark Plugs We understand that different exhaust

We understand that different exhaust systems require different sizes of donut gaskets

Dixcel RE is the race pad engineered around it: flat friction characteristics and strong

clearance and compatibility with headers

What Makes GobSoccers So Legendary

The cars inertial forces from acceleration

Hybrid Racing 5/8" Barb Coolant Return Fitting for K Series Spark Plugs We understand that different exhaustYou swapped a K series into your S2000 or your Miata and you're staring at the factory steel hard line that's supposed to route the coolant return around the back of the engine. It doesn't fit. The firewall's in the wrong place. The heater core's not where Honda thought it'd be. You can't use the factory hard line and you need a different way to get coolant back to the block. This Hybrid Racing fitting slips into the opening on the thermostat housing