Heating and Cooling› Thermostats, Housings and Fillers

K-tuned

K20 Upper Coolant Housing

$139.99

SKU: KUW-20D-N03

In Stock
In Stock
Ships by Sep 13
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$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 a redesigned housing for K20 and K24 cylinder heads. It features a 1/8 NPT temp sensor port and a recirculation fitting. The housing seals to the head using an o-ring for a leak-free seal and includes mounting hardware and plugs for both ports.
Show original supplier description
The K-Tuned K20 Upper Coolant Housing is a redesigned unit for K20 and K24 cylinder heads, building upon previous designs. This housing maintains essential features like a 1/8 NPT temp sensor port and a recirculation fitting, while enhancing the assembly process. It utilizes threaded ports and o-rings, allowing for quick and easy switching between filler necks and fittings. The housing seals directly to the cylinder head with an o-ring to ensure a leak-free operation and comes with all necessary mounting hardware and plugs for the ports. The filler neck offers a convenient 2-position locking pin, designed to accurately locate the filler for both standard motor setups and lean motor configurations. This updated housing supersedes the KUW-20D-N02 model and is compatible with K20A, K20A2, K20A3, K20Z1, and K24A1 cylinder heads. **Fitment Note:** There is a known fitment issue with the K20 upper coolant housing when used in conjunction with a Jackson Racing Supercharger.

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

BrandK-tuned
Part NumberKUW-20D-N03
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.

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