PQY Throttle Body Spacer for Jeep 2.5L/4.0L — 1" Red Aluminum, Improves Off-Idle Torque and Throttle Response

PQY's 1-inch red aluminum throttle body spacer increases off-idle torque and refines the air charge for smoother throttle response on compatible 2.5L and 4.0L Jeep engines.

If your Jeep TJ, YJ, LJ Wrangler or XJ Cherokee runs a 2.5L or 4.0L gasoline engine with a 4-bolt throttle body, this PQY throttle body spacer bolts in between the throttle body and intake manifold to change the airflow path and density. The spacer is a straightforward, reversible mechanical modification made from lightweight aluminum, supplied with gaskets, spacers and mounting hardware. It's designed for drivers seeking improved mid-range torque, crisper throttle transitions and a denser incoming air charge without complex tuning or expensive components.

How does the spacer affect throttle response and power delivery?

The spacer alters the incoming airflow pattern to smooth velocity and air-fuel mixing immediately after the throttle plate. That targeted change improves off-idle torque through roughly 3,000 rpm, which helps during acceleration from low speeds and when towing or climbing inclines.

• 1" thickness increases heat dissipation and air density at the manifold entrance.
• Improved off-idle torque between ~800–3,000 rpm.
• Red aluminum body resists corrosion while remaining lightweight.

Which Jeep models and engines will this spacer fit?

This PQY spacer is built specifically for 4-bolt throttle bodies on Jeep 2.5L and 4.0L gasoline engines. It is not universal—confirm your throttle-body bolt pattern and engine size before purchasing to ensure fitment.

• Compatible with Jeep TJ Wrangler (1997–2006) and Unlimited (2004–2006).
• Fits Jeep YJ Wrangler (1987–1995) and XJ Cherokee (1984–2001).
• Also compatible with Jeep MJ Comanche (1986–1993), 2WD and 4WD where applicable.

What comes in the box and how hard is installation?

The kit includes the main aluminum spacer, two intake gaskets, three alignment spacers and seven bolts with small washers—everything needed to mount the spacer between the throttle body and manifold. Installation is a simple bolt-on procedure for anyone comfortable with basic hand tools, though no printed instructions are provided.

• 1x red aluminum throttle body spacer; 2x gaskets; 3x spacers; 7x bolts with washers included.
• Hand tools required: ratchet, appropriate sockets, torque wrench recommended for proper bolt torque.
• Reversible modification; stock parts can be reinstalled if needed.

Who is this for: This PQY throttle body spacer is suited to Jeep owners who want a cost-effective, mechanical way to enhance low- to mid-range drivability on 2.5L and 4.0L engines without ECU remapping. It appeals to daily drivers, off-road enthusiasts and light-towing users who prioritize improved throttle response and denser intake charge. Confirm compatibility with your vehicle's throttle body bolt pattern before ordering, and consider basic mechanical skill or professional installation if you're not comfortable working on the intake tract.