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  1. UPR Head Cooling Mod (1996-2004 Mustang 4.6L / 5.4L Modular Engines) - 8201-02

    UPR's Billet Head Cooling mod for 1996-2004 4.6/5.4 DOHC 4V Modular engines helps eliminate hotspots in the #8 cylinder. This is achieved by supplying coolant flow around #8 cylinder. #8 Cylinder has been known to be the weak link in naturally aspirated engines let alone performance applications. This will keep you up and running strong by properly supplying coolant to the #8 cylinder.

    Installation requires removing the factory freeze plugs to install the UPR Head Coolant reroute kit, and is best done with the engine out of the car. We chose Viton O-rings as they are the strongest most dependable manufacturer of performance O-rings for the aftermarket. This kit includes all parts pictured and there are no other parts required for installation.

    Perfect for Stand alone plumbing and performance dry decked cylinder head applications. Designed to Prevent Hotspots in the Rear Cylinders.

    Product Features
    » Black Anodized
    » Includes the Highest Quality UPR AN Fittings
    » Bolt-in Design with Viton O-rings Eliminates Leaking or Freeze Plug Failures
    » Comes Standard with Steel Braided Hose to ensure this is the Most Dependable Kit available.

    Includes: Mounting hardware, an fittings, hose, cylinder head fittings and viton o-rings

    1996 1997 1998 1999 2001 2003 2004 Ford Mustang DOHC 4V 4.6 5.4 Engines Cobra SVTLearn More
  2. 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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  3. 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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