Get it By Christmas! Order by 12/17
$30 Off Over $300* Code: DEC30
Free Shipping Over $75*
  • Make sure it fits

    Please select your vehicle to ensure that this product fits.

Select your vehicle

Performance Chip, Stage2 4.7L Manual/Auto by Jet Performance

Part no: 90402S

$259.99 + free Shipping
Price match guarantee

Please Verify Fitment

This product fits only specific vehicles. Select your vehicle to ensure it fits.

Product Details

Important Notes:

  • Sold individually


  • 2004 Jeep Grand Cherokee WJ with 4.7L engine
  • 2006 Jeep Grand Cherokee WK with 4.7L engine


Computer controlled engines on all new cars and trucks are run by programmed chips that tellthe engine what to do. Factory chips compromise between fuel economy and performance. The Jet Powertech Performance Chip replaces the stock computer chip and maximizes various performance characteristics. New programming adjusts spark timing & the air/fuel ratio to tune the engine for maximum power when you need it. Provides improved performance under demanding conditions such as towing & wide open throttle acceleration. Installs in less than 30 minutes and is legal in all 50 states.

Product Details:

  • Improves overall throttle response
  • Increases horsepower and torque
  • Simple 30-minute installation


  • Length: 6.00"
  • Width: 4.00"
  • Height: 2.00"
  • Weight: 1.00 lbs

Parts Included:

  • (1) Performance Chip, Stage2, 4.7L Engine, Manual/Auto Transmissions

Years Covered:

2004 and 2006

For California residents: Proposition 65 Warning

Vehicle Fitment

2006JeepGrand Cherokee WK
2004JeepGrand Cherokee WJ

Additional Information

BrandJet Performance
SKU Aliases90402S

Let's Chat