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Airaid PowerAid Throttle Body Spacer (91-02 2.5L Jeep Wrangler YJ & TJ)

Item J16394
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    Features, Video & Details

    • Improves Throttle Response and Low End Torque
    • Improves Fuel Economy
    • Unique "Helix Bore" Design
    • Red Anodized Billet Aluminum
    • Includes Hardware, Gasket & Instructions
    • CARB EO Number: D-609
    • Fits 1991 - 2002 Wrangler YJs and TJs with 2.5L Engines

    Review & Installation Video

    Review & Install Video

    Increase Your Power. Do you want to improve your low to mid-range power? Would you like to see an increase in both torque and fuel economy? Then you want the Airaid PowerAid Throttle Body Spacer. Manufactured from aircraft quality billet aluminum, and complete with a kit that includes everything you need for installation, this is an affordable, easy to use option for the Jeep owner who insists on more power but doesn't want to give up on fuel economy.

    Improve Fuel Economy. The Airaid Poweraid Throttle Body Spacer not only improves the power and performance of your Jeep, but with its unique "Helix Bore" design, it also maximizes fuel efficiency saving you money at the gas pump. The Helix Bore creates a spinning action to the incoming air to provide superior atomization of the air fuel mixture for better combustion.

    Billet Aluminum Construction. CNC machined from the highest quality aircraft grade 6061-T6 billet aluminum the Airaid Poweraid Throttle Body Spacer is anodized in a red finish for great under styling and includes all the necessary hardware and instructions for a simple straightforward installation.

    CARB Certified. The Airaid PowerAid Throttle Body Spacer is 50-state smog legal under Carb EO # D-609.

    Application. The Airaid PowerAid Throttle Body Spacer is designed to fit on the 1991 - 2002 Wrangler YJs and TJs with 2.5-liter engines and the factory throttle body spacer installed.

    Note: Coupon codes cannot be applied to this product.

    Fitment: 1991 1992 1993 1994 1995 1997 1998 1999 2000 2001 2002 Details

    MPN# 310-511

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) Throttle Body Spacer
    • (2) Gaskets
    • (2) Round Spacers
    • Hardware
    Installation Info
    Will it fit my Wrangler?

      Customer Photos (5) Submit Your Photo

      View All 5 Photos

        Questions & Answers (9)

        5 Top Rated Questions

        Please tell me exactly what this is designed to do and how it does it? Thanks

        • Hello, the Airaid PowerAid Throttle Body Spacer (91-06 Wrangler YJ & TJ w/ 4.0L) is a piece of metal used to change the airflow into the intake manifold. The spacer is bolted on the back of the throttle body, downstream of the main airflow. This is strictly an aftermarket enhancement used to increase the fuel economy, torque and horsepower. It basically directs the flow of air into the manifold to maximize the volume that goes into the intake.

        Helpful (2)

        Can this fit a 2.5 L

        • The Airaid PowerAid Throttle Body Spacer is designed specifically for the 4.0L, and would be incompatible with the 2.5L.

        Helpful (1)

        Does this throttle body spacer fit a 62MM throttle body?

        • No, the Airaid PowerAid Throttle Body Spacer is intended for the stock throttle body which is 55 mm.

        Helpful (0)

        What are the issues if you install this part in a CA vehicle (not pass smog, etc)? Customer Service named off a whole list of possible issues.

        • This item is CARB approved, meaning it is 100% legal to use in California and will not stop the vehicle from passing Smog/emissions testing.

        Helpful (0)

        This spacer said it is 50 states compliant. But the warning just before I was going to purchase this item, said not for California on hi-way. ??? Please let me know!

        • The Airaid PowerAid Throttle Body Spacer is CARB OE Certified meaning this is legal for use upon highway in the state of California and all other 49 States.

        Helpful (0)
        Post Your Question
        4 More Questions
        I installed my throttle body spacer and it doesn't seem to whistle. i was wondering if it was normal and if not how to fix it. 1 answer
        Is this spacer compatible with aftermarket intake kits, or just factory air box? 1 answer
        Will this spacer work with a 62mm BBK throttle body for YJ's? 1 answer
        Will this spacer work with a snorkel? 1 answer

          Customer Reviews (44) Write a Review

          Ratings Summary

          4.6 out of 5 overall rating from 44 customers

          Installation Time: Less than 1 Hour

          Installation Cost: 0-$100

          • November 03, 2019

            5 1992 Wrangler - VitoT Installation Time: Less than 1 Hour

            Throttle body spacer

            Fit perfectly on my 92 Jeep Wrangler 4 cylinder engine, it was easy to install. It definitely gave me a little more power which is what I was looking for,didn’t really notice better gas mileage. Very satisfied with this product.

            Helpful (1)
          • May 01, 2019

            5 1998 Wrangler - JKFitz Installation Time: Less than 1 Hour

            perfect fit.

            well worth the money, it was an easy install, perfect fit and a small performance gain in the top end.

            Helpful (3)
          • April 24, 2019

            4 2006 Rubicon - Josh Installation Time: Afternoon

            06 rubicon

            Made the hood look great and added plenty of ventilation. Loved the metal template. Made cutting a breeze and took away the worries of it sliding and messing up the cuts. The only thing is to be careful if a nut is tight it will make the affixed studs spin. Overall it is a great product.

            Helpful (2)
          • March 22, 2019

            5 1995 Wrangler - RileyG

            Very good for the price.

            This piece was super easy to install and a direct fit, haven't noticed any difference in horsepower, but I didn't expect to. Just a great peace of mind knowing my engine is getting optimal air intake

            Helpful (2)
          • March 12, 2019

            5 2005 Wrangler Unlimited - Woody11020 Installation Time: Afternoon

            Great add on

            This is a great and on peace that any backyard mechanic can do with his or hers tools

            Helpful (3)
          • December 23, 2018

            5 1999 Wrangler - DanM Installation Time: Less than 1 Hour


            Easy installation works great looks great, added power.

            Helpful (7)
          • November 19, 2018

            3 1995 Wrangler - AnthonyS

            Doesn't fit with certain aftermarket intakes.

            It's possible the part won't fit if you're running an aftermarket intake, When I went to install mine it caused my intake pipe to collide with the brake booster, and not fit. :/

            Helpful (9)
          • November 14, 2018

            5 2006 Rubicon - JeremyS Installation Time: Less than 1 Hour

            Throttle body spacer

            This is great product to go along with a intake system and exhaust.

            Helpful (9)
          • September 09, 2018

            5 2006 Wrangler Unlimited - MarkO Installation Time: Shop Install Installation Cost: 0-$100

            Airaid power

            I added the airaid spacer with the BBK 62 throttle body. I had already put on a KandN cold air intake. The combo is the best modification you can get legally in California. I can feel and hear the power and smoothness. Very happy.

            Helpful (11)
          • August 24, 2018

            5 1997 Wrangler - JonathonH Installation Time: Less than 1 Hour

            Exactly what I needed.

            Works as described and the performance pickup was immediately noticeable, fit perfectly.

            Helpful (10)
          • August 17, 2018

            5 1994 Wrangler - Ryan Installation Time: Less than 1 Hour


            Unexpected performance gains! Might have to do with changing the angle where the gas pedal attaches to the throttle body, but the throttle response is a little quicker. Paired with a 62mm throttle body and a cold air intake.

            Helpful (11)
          • July 26, 2018

            5 1998 Wrangler - Michael Installation Time: Less than 1 Hour

            Throttle body spacer

            The Airaid throttle spacer is a definite help in throttle response and off idle torque. I tend to disagree with the video on the install, claiming little “power” gain. This is only designed to help on the lower end of the spectrum which it does nicely. I had already installed a CAI and I think it was a great compliment to the spacer. The whistle is pretty cool also!

            Helpful (10)
          • March 28, 2018

            3 1997 Wrangler - DarrellH Installation Time: Less than 1 Hour

            Throttle Body spacer.

            It was easy to put in, but I haven't noticed really any Increase on power.

            Helpful (14)
          • February 19, 2018

            4 2004 Wrangler - TeddS Installation Time: Less than 1 Hour

            Easy to Install

            This was an easy install. However, I could only see where I needed (2) of the bushings on my TJ. Seems like a little boost in power but not very noticeable. We will see if it improves gas mileage.

            Helpful (13)
          • February 06, 2018

            4 2005 Wrangler - ATH1981 Installation Time: Less than 1 Hour

            As expected

            Fit well and could tell a difference in overall gas milage.

            Helpful (13)
          • December 20, 2017

            5 2000 Wrangler - GlennOwens Installation Time: Less than 1 Hour

            Better performance

            Enjoyable performance jeep fills lighter gets in and out of traffic better performance gives you a peace of mind

            Helpful (14)
          • November 08, 2017

            4 2005 Wrangler Unlimited - MatthewZ Installation Time: Less than 1 Hour

            Quality product

            easy to install, well built, noticeable improvement in performance. Gas consumption yet to be determined.

            Helpful (15)
          • October 07, 2017

            5 1997 Wrangler - WalterR Installation Time: Less than 1 Hour

            high quality

            Great upgrade ; noticed improvements in acceleration and torque. A high quality part instructions are easy to follow. I highly recommend this part.

            Helpful (16)
          • September 16, 2017

            5 1997 Wrangler - Greg Installation Time: Less than 1 Hour


            This part makes our car better we felt the difference when we first tested it it was smoother than it was when we first bought the car.

            Helpful (13)
          • August 30, 2017

            5 1998 Wrangler - GreatOgreKing Installation Time: Less than 1 Hour

            Horsepower Only

            Definitely showed marked improvement in horsepower. Didn't notice anything in the way of fuel mileage. Even considering claims otherwise.

            Helpful (12)