The aFe Silver Bullet Throttle Body Spacer (46-32002) is a billet aluminum spacer that mounts between the intake tube and the throttle body on 2003-2008 Dodge Ram 5.7L HEMI V8 trucks. The manufacturer says it is CNC-machined from 6061-T6 aluminum and uses a serrated/helix entry that creates turbulence to mix the incoming air charge. The added volume between throttle and cylinders is the mechanism aFe credits for better volumetric efficiency and quicker throttle response over the stock setup.
Buyers choosing this over a plain or cheaper spacer are mainly paying for the serrated design, which the manufacturer says is meant to cut the whistle common to plain helix spacers. Owners on user forums report the whistle is still audible at light throttle, so set expectations accordingly. This spacer is built for aFe's own intake, and the manufacturer lists it with the 53-10013R and 53-10013D Quantum intakes. It does not fit the factory air intake; stock-intake trucks need the 46-32006 version. Searchers looking for an aFe Silver Bullet TBS for a 03-08 Ram 5.7L Hemi, a billet throttle body spacer for a Hemi intake, or a serrated helix throttle spacer will find the right match here.
No. The manufacturer states this spacer does not fit the factory intake system and points to the 46-32006 spacer for stock-intake trucks.
The manufacturer says the serrated/helix design reduces whistle compared with plain helix designs. Owners on user forums report some whistle remains at light throttle, so results vary.
Owners on user forums report the raised throttle body can keep the engine cover from seating, and the manufacturer's install guidance notes that trimming the cover may be preferred on Ram trucks.
Per the manufacturer's install sheet, this is a bolt-on job using the factory throttle body mounting points. The sequence is to disconnect the IAT sensor, remove the intake tube, unplug the TAC harness, and remove the four factory throttle body bolts, keeping the factory O-ring in place where applicable. Install the spacer with the AIR IN side facing the throttle body, place the gasket between the spacer and throttle body, and secure everything with the longer bolts and washers supplied. Tools called out are a 10mm nut driver and an 8mm socket with ratchet. The manifold is plastic, so the manufacturer warns against overtightening, which can damage the manifold. Owners on user forums describe the job as quick, around ten minutes, and note one spacer arrived with its nameplate upside down, so check orientation before final torque.
