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Twin Screw 2003 Cobra 4.6L Supercharger by Kenne Bell
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1 23741
Recommended By Average Price Average Rating
100% of reviewers None indicated 10.0


Description: Kenne Bell, the Twin Screw gurus, have done it again. Up to 617 RWHP vs. stock 366HP with stock cats, MAF meter, throttle body and injectors from ONLY a Kenne Bell Supercharger Upgrade kit and Cobra Cool Air Kit.

Pick your boost and make a 4 minute pulley change. Run 8-15 psi on the street with 92 octane and then increase the octane for higher boost levels up to 22 psi.

The best performance product available for the 2003 Cobra. Just bolting it on at same 13 psi as Eaton increases power by 72HP. That's more than headers, exhaust, pre cats, x pipe, throttle body and mass air meter make - and there's plenty more supercharger potential power on tap.

8-20 psi kit is available in Satin Black or Polished. Includes Kenne Bell Blowzilla 2200 Supercharger, FLOWZILLA inlet manifold, Kenne Bell SWITCH CHIP® and 30 amp BOOST-A-PUMP™, Tuning Instructions and Dyno Tests for all pulley sizes. Extra pulleys - $69 (sizes 4" (9 psi), 3-3/4" (11 psi), 3-1/2" (13 psi), 3-1/4" (15 psi), 3" (17 psi), 2-3/4" (19 psi), 2-1/2" (21 psi). Kenne Bell Cobra Cool Air Kit highly recommended at any boost level.

A direct bolt on replacement. 30% lower air charge temp and 30% less parasitic (HP) loss than the stock Eaton. 70 more HP than Eaton at 13 psi (90 more HP with Kenne Bell Cobra "Cool Air Kit" ) - and the boost doesn't "drop off" from 13 to 10.5 psi as with the Eaton.

See "Snake-Bite Hit" in March '03 issue of 5.0 Mustang Magazine. Great supercharger article!


• 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.
• +70HP gain at 13 psi (489 vs 417). 3.55" Kenne Bell vs 3.0 Eaton pulley.
• 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*- 21 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.
• Everything needed is in kit including Kenne Bell BOOST-A-PUMP™ & SWITCH CHIP®

For more information visit website.
The Staff @ AFM
Posts: 7
Registered: March 2002
Location: Long Beach



Registered: August 2003
Posts: 44
Review Date: 10/20/2004 Would you recommend the product? Yes | Price you paid?: None indicated | Rating: 10 

Pros: Easy install, Very good driveability, Easy to convert back if needed
Cons: Expensive, Maxes out sooner than procharger

Love the sound, plenty of power

03 Cobra Sonic Blue Coupe #2053
Bassani Mid Length Headers/ Xpipe, Borla Cat-back, Kenne Bell cold air intake, Steeda Tri-Ax Shifter, Auto Meter Lunar gauges, Fluidyne Heat exchanger, Metco Pullies, Kenny Brown Extreme Matrix and Crossbrace/Alum. Bushings, Centerforce Dual Friction w/ 26 spline input shaft, Kenne Bell 19psi, Diablo Delta Chip
275/40/17 Goodyear Gs III front
315/35/17 Goodyear Gs III rear on 17x 10.5
Best Run: 12.06 122mph
Best Mod: footprint gas pedal
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