Heating and Cooling› Thermostats, Housings and Fillers

Ktuned

K20 Upper Coolant Housing

$139.99

SKU: KUW-20T-F04

In Stock
In Stock
Ships by Sep 12
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
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Easy — 1–2 hours

Overview

The K-Tuned K20 Upper Coolant Housing is designed for K20A, K20A2, K20A3, K20Z1, and K24A1 cylinder heads. It features a 1.25-inch hose end fitting, a -16 ORing outlet, and a -12 ORing filler inlet. The integrated filler neck can be relocated to a higher point on the engine, serving as the highest point of the cooling system to help escape air pockets during bleeding.
Show original supplier description
The K-Tuned K20 Upper Coolant Housing is engineered for K20A, K20A2, K20A3, K20Z1, and K24A1 cylinder heads, catering to high-horsepower and big turbo setups. It features a 1.25-inch standard hose end fitting for the outlet and a -16 ORing outlet, with a -12 ORing filler inlet. The integrated filler neck, which can also be optioned with a 16AN fitting, relocates the radiator cap to the highest point of the cooling system, significantly aiding in the coolant bleeding process for engines known to be problematic in this regard. This design clears up space for larger turbo components. The filler neck was specifically designed for use with an OEM 92-00 Honda Civic radiator cap. Important fitment notes include that this housing does NOT fit with the PRB manifold and is incompatible with throttle bodies equipped with cruise control. A radiator cap is not included with this product.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandKtuned
Part NumberKUW-20T-F04
CategoryHeating and Cooling

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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