STM Evo 6/7/8/9 Modified Water Neck

STM Tuned Inc.



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The STM modified OEM water necks for the Evo 6/7/8/9 is available with a convenient 1/8" NPT bung welded right on top for a clean install for your water temperature sensor and gauge. Also available with the -AN bung option to connect -10AN, -12AN or -16AN lines and fittings to your upper radiator outlet.

If you're running a larger exhaust manifold, the factory-style coolant hoses get in the way. Installing a half-size or JDM radiator that moves the upper neck to the right of the engine bay can eliminate that problem!

Vehicle Fitment:
Mitsubishi Evolution 6/7/8/9
• Not compatible with Evo 1-5
• Not compatible with the STM Billet Radiator (See Radiator Cap Relocation)

More Options:
• Check out the STM -AN Upper Hose Kit

Description: Part Number:
OEM Style Water Neck with NPT STM-EVO69-MD363251-NPT
-16AN Water Neck with NPT STM-EVO69-MD363251-16AN-NPT
-12AN Water Neck with NPT STM-EVO69-MD363251-12AN-NPT
-10AN Water Neck with NPT STM-EVO69-MD363251-10AN-NPT
-16AN Water Neck STM-EVO69-MD363251-16AN
-12AN Water Neck STM-EVO69-MD363251-12AN
-10AN Water Neck STM-EVO69-MD363251-10AN
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Customer Reviews

Based on 1 review
Trevor Canale (Hayden, ID, US)
STM Welded Water Neck

Just received my water neck the other day and am very pleased with the quality of the welds and the product itself, well worth the purchase compared to hacking the factory neck and welding a fitting on yourself. Would definitely recommend!

Thanks for the review Trevor! Glad you were satisfied, we look forward to helping you get what you need in the future.

Cancer and Reproductive Harm