The aFe Silver Bullet Throttle Body Spacer (PN 46-32005) sits between the factory throttle body and the intake manifold on the 5.7L HEMI V8. The manufacturer says it is machined from 6061-T6 billet aluminum and pairs a serrated edge with a helix inner design, which aFe says is meant to cut the whistle common to helix-only spacers. Buyers comparing it with a cheaper helix-only spacer or a bare gasket swap should know the performance case is debated. aFe claims added horsepower, torque, and throttle response, but owners on user forums are split. Some describe a clearer throttle response, while others report no measurable gain on the Hemi. The real advantage for many buyers is a quieter, better-engineered spacer with a documented torque spec, not a guaranteed power number.
This is a bolt-on job for a DIY owner with basic hand tools. The manufacturer's install sheet lists fitment for 2009-2010 and 2011-2023 RAM 1500 5.7L trucks, 2019-2023 RAM 1500 Classic, 2010-2018 RAM 2500, 2011-2018 RAM 3500, 2011-2023 Dodge Durango, 2007-2009 Chrysler Aspen, and 2011-2021 Jeep Grand Cherokee. Searches for a 5.7 Hemi throttle body spacer, Ram 1500 TBS install, or Silver Bullet whistle reduction typically lead to this part number. Note that the spacer is a plastic-manifold application, so the 49 in-lb fastener spec matters, and the included screws vary by model year.
The manufacturer's installation sheet lists RAM 1500 (2009-2010 and 2011-2023), RAM 1500 Classic (2019-2023), RAM 2500 (2010-2018), RAM 3500 (2011-2018), Dodge Durango (2011-2023), Chrysler Aspen (2007-2009), and Jeep Grand Cherokee (2011-2021) with the 5.7L V8. Other aFe application listings show different year ranges, so confirm your exact year with the manufacturer before ordering.
The manufacturer says its serrated/helix combination design reduces the intake whistle found on helix-only spacers. Owners on user forums still report an audible whistle on some installs, particularly under throttle, so expect some intake sound rather than silence.
The manufacturer's parts list includes 85mm screws for 2009 to early 2012 models and 75mm screws for late 2012 to 2016 models. These are meant to replace the factory throttle body screws, so match the length to your model year.
The manufacturer claims increased horsepower, torque, and throttle response. Owners on user forums report mixed results, and many say they saw little to no measurable gain on the Hemi, so treat the power claim as unverified for your truck.
Per the manufacturer's installation steps, the job starts by disconnecting the intake air temperature sensor, removing the air intake tube, and unplugging the throttle air control harness from the throttle body. Next, remove the four factory throttle body screws and set the throttle body aside, leaving the factory sealing O-ring in place. Install the spacer and gasket onto the intake manifold, with the gasket between the spacer and the throttle body, then secure with the supplied screws using an 8 mm socket and ratchet. Tighten to 49 in-lb and do not exceed that value, since the manifold is plastic and the manufacturer warns against over-torquing. Reconnect the harness and intake tube, then recheck clamps. Watch for the screw length difference by model year, and keep the factory screws in case you later remove the spacer.
