Not sure which 2003 Chevy Silverado 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:
"Instant increase in power, torque, and gas mileage. Very happy. About a 20% increase in mpg." —Michael D from Pennock, MN bought an Airaid PowerAid Throttle Body Spacer for a 2003 Chevy Silverado, 1500, 5.3L V8.
"Install was easy with the exception of the screws attaching to the throttle body. It was difficult to tighten them enough to seal the gasket. In corporation with the Cold air intake it adds power. It's early but so far I am very happy with this product." —John L from Saint Louis, MI bought an Airaid PowerAid Throttle Body Spacer for a 2003 Chevy Silverado.
"I can feel the power and the whistle isnt very loud like other people state. plus i had gotten a cold air intake. with both aplications i have noticed a few more miles per gallon than before." —Wyatt G from Kalispell, MT bought an Airaid PowerAid Throttle Body Spacer for a 2003 Chevy Silverado, 2500, 8.1L V8.
"Noticed instant pick up. Installation easy, but with intake, a little harder, notching required. 3.7mpg improvement with spacer and intake." —Eric R from El Cajon, CA bought a Taylor Cable Helix Power Tower Throttle Body Spacer for a 2003 Chevy Silverado.
"I've had great experiences installing all my after market parts in my silver ado. For someone who don't do mechanic to much everything a learning experience. I was so excited for this part to come in, I had started ripped the guts out to everything needing to come out before the ups could even arrive. I had a little difficulty putting the piece back together but over all it was worth it. The sweet whistle that you get every time you give it gas is sweet. And the response was a big difference. It seems like thats what my k&n intakes been missing. My next merchandise is the MAS (mass air flow sensor). I just ordered the jet performance module. I hope that's worth the money. Over, I recommended it to anyone wanting just a little more out of their toy." —Vincent T from Safford, AZ bought a Jet Power-Flow TBI Spacer for a 2003 Chevy Silverado, 5.3L V8, 8th digit of VIN = T.
"I love the taylor cable tb spacer I could tell a little diff. in the hp and throttle response the whistle is nice but its not loud enough but its a good deal for the price.I would recomend it and autoanything is awesome they have really quick shipping and they keep you posted by email i ordered my tb spacer and it was at my door in 2 days had to trim fan shrowd a little but not much!" —Bradley V from Seneca, SC bought a Taylor Cable Helix Power Tower Throttle Body Spacer for a 2003 Chevy Silverado, 4.8L V8.
"well i installed this on my 2003 Silverado 4.8 and when i was installing it was a bit of a hassle due to the bottom 2 bolts and you need an extension but then the radiator fan is a problem too because it limits your space. Well its pretty nice to have the TBS but its a over priced for sure but its nice to hear the whistle after 1700 RPM's, sounds identicle to a turbo diesel just not as loud but loud enough to hear it with the radio on. I dont know how much more power it gives you because i installed other multiple things at once, overall its a little thing to add." —Alejandro O from El Paso, TX bought an Airaid PowerAid Throttle Body Spacer for a 2003 Chevy Silverado, 1500, 4.8L V8.
"Greatly improved Throttle response , havent really noticed gas mileage yet but it Definately worth the Performance Gains! Install took some time but was well worth it!!" —Billy C from Harrodsburg, KY bought a Taylor Cable Helix Power Tower Throttle Body Spacer for a 2003 Chevy Silverado, 4.8L V8.
"Great addition. AEM CAI and Airaid throttle body spacer compliment each other very nicely. Make sure you don't over tighten the screws! I really like the whistle it makes too. Very good product for my 2003 Chevy silverado." —Tyler M from Minot, ND bought an Airaid PowerAid Throttle Body Spacer for a 2003 Chevy Silverado, 1500, 5.3L V8.
"This item was very easy to put on. Great instructions and the fit was perfect." —Kendell G from Kindersley, SK bought an Airaid PowerAid Throttle Body Spacer for a 2003 Chevy Silverado, 5.3L V8.