Increase your low to mid-range power and torque, plus boost fuel economy with the Airaid PowerAid Throttle Body Spacer. Built from aircraft-grade aluminum and featuring the revolutionary Helix Bore design. Straightforward installation with standard tools. 50-state CARB legal. Lifetime Warranty.
Harness the power of Helix with the Taylor Cable Helix Power Tower PLUS Throttle Body Spacer. Dyno and flow-bench tested to deliver massive mid-range power and torque gains, plus a boost in MPGs. T-6061 aircraft aluminum. 50-state CARB legal. 30-day warranty.
Finally, a throttle body spacer that doesn't whistle while it works. The JET Performance Power-Flo throttle body spacers’ innovative bore design gives you gains in the mid-range power band and increases overall fuel economy without the annoying whistle. 50-state CARB legal. 1-year warranty.
Boost torque and horsepower with aFe Silver Bullet Throttle Body Spacers. These throttle body spacers pump up the power without annoying wind noise. Combination serrated/helix design results in better fuel burn. Lifetime Warranty.
Ready to raise your fuel economy by 1 – 3 MPGs while throttling up your low-end torque? Just bolt on a custom EconoAid Throttle Body Booster. This ingenious intake booster helps improve combustion by shaping the air before it reaches your cylinders. Lifetime Warranty.
Not sure which 1999 Jeep Grand Cherokee Throttle Body Spacers are right for you? We have over 1486 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Here's what some of our customers have said:
"I love it! I love the Sweet Sound that you get! I am not sure about the gas saving, because how are you going to save gas if this Body Spacer give you more power so you want to push the gas pedal! jeje!" —Jorge V from San Jose, CA bought an Airaid PowerAid Throttle Body Spacer for a 1999 Jeep Grand Cherokee.