How to Install a Throttle Body Spacer

One way to get more horsepower out of your engine is to install a throttle body spacer. Originally used in the racing community, the throttle body spacer increases the length of the air intake to the motor. By extending the length of your air-intake system, the spacer speeds up the air passing through the intake. This creates a better intake charge, more velocity, improves combustion and torque, and even improves gas mileage. The idea is to get more air into the intake before the atomization of fuel occurs. You do not need a mechanic for this job. The throttle body spacer goes on quickly to enhance your engine’s performance. Follow these simple steps, and your engine will thank you.

Tools and Materials Required for the Installation Process

  • Throttle body spacer
  • Slider screwdriver
  • 10 mm socket
  • Screwdriver
  • Pliers
  • Protective eyewear
  • Protective gloves

Step 1 – Purchasing the Spacer

Before you plan to install a throttle body spacer, you need to buy one. It is recommended that you consult a professional or certified dealer on which spacer is right for your model of vehicle.

Step 2 – Shut off the Electricity

Although you are not dealing with any electrical components, you are going to be working on your engine with tools. It is always a good idea to disconnect the negative cable from the battery to prevent the flow of electricity through the engine. This simple, precautionary step is just good sense.

Step 3 – Remove Air Intake

Remove your air-intake system, by removing the screws that connect the air intake to the motor. Using your screwdriver, remove the screws and set aside. Always place any removed parts where they will not get dropped or lost. If your intake has a clamp that needs removing, use your screwdriver and pliers to loosen and remove. Remove the factory torque bolts.

Step 4 – Install the Spacer

Some throttle body spacer manufacturers label their spacers with how to install them. Look on your spacer to see if it indicates which side is the throttle body side. This is the side that faces the motor. If your spacer does not have this tip, just refer to the installation instructions. The gasket goes between the throttle body and the spacer. Using the slider screwdriver and a 10 mm socket, tighten the bolts and secure the spacer. Make sure all steps are complete and all bolts are tight before moving on.

Step 5 – Replace Air Intake

Replace your air-intake system. The system now fits onto the spacer, which has increased the length of the air intake. Make sure to remember to put any clamps you removed back on. The clamps create a tighter seal and prevent air from escaping, which would cause your engine to run less efficiently.

Step 6 – Turn on the Electricity

It is now time to reconnect the negative cable to the battery and restore electrical power. You will need to start the vehicle in the next step.

Step 7 – Listen for Leaks

With the engine running, check for leaks or unusual vibrations that indicate a loose part from your throttle body spacer installation. If you don't find any leaks, then you are done with a successful installation of a throttle body spacer.