The aFe Silver Bullet Throttle Body Spacer (part 46-35008) is a billet aluminum adapter that raises the throttle body off the intake manifold on the 3.6L Pentastar V6 in the JL Wrangler. The manufacturer machines it from 6061-T6 billet aluminum, which keeps the part light and strong while holding a precise fit. It suits owners who want an affordable, bolt-on throttle body modification before committing to a tune or a larger intake.
Set expectations carefully before buying. Owners on user forums disagree about results: one JL-era owner said the spacer made no measurable difference, another reported a slight throttle response change, and a forum member recalled a dyno video showing no gain. The real case for this spacer is its low price and simple installation, not a dramatic power number. Search terms buyers commonly use include JL 3.6L throttle body spacer, Wrangler JL Gladiator JT TBS, aFe 46-35008 install, and Pentastar throttle body spacer.
The manufacturer lists this part number for the 3.6L V6 only, so the 2.0L four-cylinder is not an listed application. Confirm with the manufacturer before ordering for a four-cylinder vehicle.
The manufacturer lists the Wrangler JL and Gladiator JT with the 3.6L V6 for 2018 through 2026. Year ranges can appear differently elsewhere, so verify your VIN and model year with the manufacturer before purchase.
Owners on user forums describe the aFe spacer as an easy bolt-on job rather than a major repair. Work with the engine cool, and keep debris out of the open intake and throttle body bore. Support the throttle body so it does not hang from its wiring harness, and use a torque wrench on the throttle body fasteners rather than overtightening the plastic housing. Install the gasket between the throttle body and the spacer, and confirm the spacer's orientation against the instructions included with your kit, since published guides do not fully agree.
