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  1. MMR 437192 Professional Head Cooling Mod - HCM (1996-2004 4.6L Mustang Cobra)

    This professional kit includes Billet left and right cylinder head fittings, the passenger side fitting has two outlets so that it can be run with or without the factory heater core. This kit joins the cylinder head coolant flowpath eliminating hot spots and that dreaded tick caused by overheated and worn valve guides. Includes all hardware and seals for easy installation.

    Includes plug (not shown) for those applications no longer using the heater core.

    Precision Manufactured by MMR in the USA

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  2. Lethal Performance GEN 2 Head Cooling Mod

    Lethal Performance GEN 2 Head Cooling Mod

    **Works only on 99+ 4.6 DOHC Vehicles**

    This Generation 2 design uses an O-Ring seal and a retaining plate to secure it in the cylinder head. A benefit to the newer design is that it can be installed on supercharged applications (03 Cobra-style set-ups) without removing the supercharger or the transmission.

    Lethal Performance GEN 2 COOLING KITS WILL ALSO WORK ON:

    -1999 Cobra (Normally aspirated/Kenne Bell/Whipple)
    -2001 Cobra (Normally aspirated/Kenne Bell/Whipple)
    -2003-2004 Mach 1 (Normally aspirated/Kenne Bell/Whipple)

    ** The Lethal Performance Cooling kit will NOT be a direct fit on Vortech and Paxton Supercharged applications, due to the re-routing of the upper radiator hose**

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