Throttle Body Spacer for Jeep Cherokee (1991-2000) 2.5L 4.0L

Billet Aluminum Throttle Body Spacer for 1991-2000 Jeep Cherokee

Optimized Intake Plenum Velocity: Engineered hardware spacer designed to smooth transitional air charge and increase plenum volume for enhanced low-end torque across AMC 2.5L and 4.0L powertrains.

The Stock Cherokee Intake Turbulence

Factory AMC 2.5L and 4.0L intake runners suffer from an abrupt transition angle directly between the throttle body base and the cast aluminum intake plenum. Under immediate throttle tip-in, this blunt mating surface creates localized boundary layer separation and turbulence, which stalls intake charge velocity. The resulting drop in volumetric efficiency dulls off-idle throttle response, which is especially noticeable when crawling at low RPM or maneuvering steep technical inclines.

The Engineering Solution

Precision CNC-machined from solid 6061-T6 billet aluminum, this spacer spaces out the throttle valve to establish a laminar transition path into the manifold. The open-bore helical design stabilizes high-velocity airflow into the plenum chamber, smoothing intake pulses and building usable off-idle torque. Finished with a corrosion-resistant anodized coating, the assembly includes grade-304 stainless steel fasteners engineered to retain exact torque specs under severe thermal cycling without inducing intake vacuum leaks.

Technical Specifications

Compatibility

• 1991-2000 Jeep Cherokee (XJ) 2.5L I4 (AMC 150)
• 1991-2000 Jeep Cherokee (XJ) 4.0L I6 (AMC 242 / PowerTech)
• Fits Base, SE, Sport, Classic, Country, and Limited trims

The Jeep Trail-Ready Standard

Engineered for high-vibration off-road duty, this solid hardware upgrade resists thermal heat soak and sustains mechanical clamping force across punishing low-range crawl operations.