• $ 5,899.00



This is a Kenne Bell Supercharger Air-to-Air & Liquid Cooled Tuner Kit with a Black Powdercoated Mammoth 3.2LC Twin Screw head unit and stock 6 rib pulley setup for the 2003-2004 Ford Mustang Cobra 4.6L which will add 119+ of rear wheel horsepower on just 13 psi of boost using 91 octane gas! This is the tuner kit which will require a custom tune done locally after you install the kit, and does not include a fuel system, programmer, or tuning. This tuner kit, however, includes Finished kits available Polished or Black Powdercoated unless otherwise mentioned in the details.

The “King of Twin Screw Kits.” For those who want maximum HP potential from a Twin Screw Kit.

Horsepower gain: 119+
Mammoth 3.2LC billet twin screw supercharger head unit, satin finish, 15-32psi on 91 octane
Bar and Plate Intercooler
Bigger and more is better. 20% larger Kenne Bell Hi Density Intercooler concept uses 30% more cooling rows and fins for increased cooling efficiency
Dual 75mm Throttle Body
Billet Bypass Valve Assembly
Belt Drive System: Stock 6 rib
4-1/2" Filter/Meter/Ram Tube
Ford GT Flex Tube
Mammoth Manifold
Fuel Pump Booster Supplied: NONE Supplied
Fuel Injectors Supplied: NONE Supplied
Computer/Ignition Mods.: NONE Supplied
System is 100% complete with OEM quality and appearance

 INSTANT BOOST / &TORQUE at ANY rpm – 2500 up.
 Direct bolt on replacement. Easily installed.
 More power, cooler charge temp, less power consumption/parasitic loss than stock Eaton.
 90% efficiency.
 Approx. 13 psi gain per 1 psi boost.
 30% less parasitic loss and 30% lower air charge temp at same HP.
 +119HP gain at 13 psi.
 Best $ value bolt on. More power than headers, cam, throttle body, MAF meter, chip and filter COMBINED.
 38HP at 13 psi just from reduced power consumption.
 No “boost drop off” (stock Eaton is 13 psi @ 4000 and only 10.5 psi @ 6000).
 No “boost lag” as with centrifugals and turbos.
 Quick and easy 4 minute pulley/boost changes.
 Boost range 9*- 26 psi.
 Billet aluminum construction.
 Whisper quiet.
 Billet bypass valve.
 Internally lubricated. No tapping holes in pan required.
 Doesn’t use engine oil.
 Looks factory.
 Available polished or black satin.
 Stock “dual” or Kenne Bell “Big Oval” inlet manifolds available (optional).

Since 2003, no other performance product has created more excitement for Cobra owners than the shrill billet whine of a Kenne Bell Twin Screw. Up to 378HP more HP over stock (744-366=378HP). Our most popular Street Kits. Huge HP potential. Plenty of room to grow. Best $/HP value. Far more HP than porting Eaton, headers, heads, cams, x pipe. Big bad billet BIG BORE™ H Series uses less engine HP to drive than OEM Eaton (up to 85HP) and 56HP less than other Twin Screws (2.6, 2.8, 3.0L). That means more HP to the rear wheels.

Also 30° cooler air charge temp than other Twin Screws. Boost won’t drop off or is limited to 13 psi. Range of 9-18 psi on the street and up to 24 psi for weekend competition with only pulley change. 744HP at 23 psi on a 100% stock engine (no headers, heads or cams) thru the cats with just a cat back and Kenne Bell Cool Air Kit.

Uses stock crank pulley. No oversize expensive crank pulley required for higher boost. And it fits under the stock hood. Only a Kenne Bell BOOST-A-PUMP™ is needed for 700HP. No larger pumps, lines, rails, injectors necessary. After 700HP, upgrade the fuel system. We recommend using 2003 Cobra style rods and pistons. Use 60lb injectors and Big Oval Throttle Body

Kit features the latest breakthrough Kenne Bell technology e.g. 2.8LC3.0LC Series (up to 56 more HP and 30° cooler air charge temp than other Twin Screws) coupled to the new over the top MAMMOTH™ Inlet System that leaves the competition gasping for air. The MAMMOTH™ 2.8 may cost more, but comes standard with COMPLETE CAK, 4-1/2” Filter, 4-1/2” Ram Tube, 4-1/2” Integral Meter, Dual 75mm Throttle Body (industry’s largest) and the MAMMOTH™ Inlet Manifold with billet engraved identity plaques. Not a cobbled together – hope it works grab bag inlet system. The secret to the incredible HP potential (1100 HP rated) is the COMBINATION of supercharger and inlet system. Higher HP levels demand a larger inlet tract. That would be a no brainer. Any one inlet component that is restrictive (manifold, throttle body, ducts, meter or filter) will limit and kill HP and the higher air flow demanded by the supercharger.

Fits under the stock hood, but the big MAMMOTH™ Manifold and larger 2.8 decrease hood clearance limiting boost to minimum 18.5 psi (max for street) with the stock 7.5” crank pulley and 3-1/2” supercharger pulley. Note: Use optional 6.55” crank pulley x 3-1/2” supercharger pulley for 15 psi (see Tech & Tuning Tips ‘03 Cobra MAMMOTH™ Kit). Some cars get by with a 3-3/4x7.5” (17 psi). Check for clearance with clay. Kit includes battery relocation kit to left side. Right side fenderwell lacks the air flow capacity and space for high HP levels. Kenne Bell BOOST-A-PUMP™ is needed at 450HP.

12 Month warranty direct from KB
Custom made and shipped direct from KB in 2-4 weeks

Kenne Bell Dealer information
Kenne Bell is very strict about who they allow as dealers. Dealers must have experience with high performance forced induction applications and provide excellent customer service and application advice. Most online only or mail order companies are unable to qualify as dealers, but you are welcome to stop by our shop to talk about your application or view our supercharger kits.