K-Tuned K-series Upper Coolant Housing (w/Optional Filler) - K20A/A2/A3/Z1

K-Tuned K-series Upper Coolant Housing (w/Optional Filler) - K20A/A2/A3/Z1

Here is the K-Tuned Upper Coolant Housing for K20A/A2/A3/Z1 & K24A1 cylinder heads. This housing will provide several unique advantages over the stock units. The hose outlet on the K-Tuned housing pivots slightly, allowing approximately 15 degrees of angle adjustment. This is helpful when compared to the fixed the factory outlet that always seems to put the upper rad hose in the path of the intake piping. There are three available hose outlets to work with any radiator hose setup. Choose the standard 1.25” hose end  for use with regular rubber or silicone rad hoses, or you can switch to an optional -12AN or -16AN fitting for use with upgraded hose and fittings that are also available from K-Tuned.

An optional integrated Filler Neck is available that can be used to relocate the radiator cap to a higher point on the engine itself. The new location is the highest point of the cooling system and allows air pockets to easily escape during the coolant bleeding process. The optional Filler Neck is also available with fittings (1.25” hose end, -12AN, or -16AN) and was designed for use with an OEM 92-00 Honda civic radiator cap or K-tuned rad cap (available separately). This part will be very helpful on an engine that already has a bad reputation for coolant bleeding.

The K-Tuned Upper Coolant Housing will compliment the K-tuned swivel neck thermostat and our water pump block off plate kit. All of these parts allow plenty of options for custom and race engine cooling setups.

See pull down menu for coolant housing options.


- This is an older design that is being phased out, limited stock on hand. 
- Optional taller filler neck available separately. 
- Not compatible with K24A2/A3/A4 and K20Z3 cylinder heads.

K-Tuned K-series Upper Coolant Housing (w/Optional Filler) - K20A/A2/A3/Z1

Regular price Sale $107.99
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