Throttle Body Spacer (725153) 1999-2007c Silverado/Sierra, GM SUV 4.8/ - Volant Performance

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Throttle Body Spacer (725153) 1999-2007c Silverado/Sierra, GM SUV 4.8/5.3/6.0/8.1L, 2003-07 Hummer H2, 2004 GTO

8 reviews

  • Volant throttlebody spacers are designed to provide additional performance with your factory or Volants Cool Air Intake system. Manufactured from glass-filled Nylon composite, the Vortice spacers are incredibly strong, yet lightweight and install behind your vehicles throttle body to promote quicker throttle response and in most applications, provide a slight improvement in fuel efficiency.

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4.2 Based on 8 Reviews
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    Volant Performance Throttle Body Spacer (725153) 1999-2007c Silverado/Sierra, GM SUV 4.8/5.3/6.0/8.1L, 2003-07 Hummer H2, 2004 GTO Review
    18 May 2023
    Matthew P.
    United States United States
    22 Mar 2024

    Spacer and Air Intake are not compatible

    This throttle body spacer and air intake do not work together. I have a 1999 Chevrolet Silverado 4.8L, with zero modifications. As far as the throttle body spacer, the install went as well as it could have. I found the directions to be difficult to follow. And the only official video I found online was for a Ford. I ended up stripping the threads on one of the plastic spacers that came with the kit. I was torquing to a modest 8-10nm when the threads stripped. There were no torque specifications for the kit; I made a best guess. The spacer installed okay. I could have used a little more instruction when it came to removing the stud bolts from the throttle body. I’d never done this before and I ended up stripping the threads on two of the three bolts (before I figured out a 5/16 socket would work). Since I couldn’t use the spacer with the Volant air intake, I needed to reinstall these stud bolts. Luckily I was able to chase the threads with the original nuts. It’s a really nice looking spacer, it’s just a shame that it doesn’t fit when using in tandem with the air intake.

    Chris H.
    United States
    10 Mar 2024
    daniel q.
    United States United States
    04 Apr 2023

    Easy installation.

    Installation was fairly easy. Jury is out as to whether or not it has improved anything. Bought along with cold air intake.

    Seth W.
    United States United States
    02 Sep 2021


    The price point is high for the little bit of performance gains. The quality of the product, and the easy to follow directions, made for a smooth install.

    Randall P.
    United States United States
    01 May 2021
    Alec B.
    United States United States
    02 Feb 2021

    Works as described

    Shipping wasn't super fast but received in a reasonable time frame. Installed on my 2005 suburban after putting larger tires on. The larger tires made it a tad more sluggish on acceleration however this seemed to get that small difference back. Not a huge difference but it does add more volume to the intake. Also I did a throttle body coolant bypass while installing it and cleaned my throttle body thoroughly. As it turns out I actually had a coolant leak in the throttle body. Spent forever trying to diagnose that. I run this with an aftermarket intake pipe with the factory airbox and a performance dry filter. The ole girl is definitely breathing better.

    David M.
    United States United States

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