The aFe Silver Bullet throttle body spacer (part 46-33011) is a billet aluminum spacer that installs between the throttle body and the intake on the 6.2L V8. The manufacturer says it is constructed from durable 6061-T6 billet aluminum and uses a serrated/helix entry. Its listing covers the Ford F-150 V8-6.2L, SVT Raptor 10-14, and Super Duty 11-16 V8-6.2L applications, so it suits a Boss-engine truck already running a cold air intake or tune. Because the spacer is a modest-cost bolt-on, its value depends on your goals. Owners on user forums report a smoother pull and a different intake tone, while others saw little change. Buy it for sound and throttle feel, not as a large power adder.
Where many spacers whistle under light throttle, this design targets that complaint. The manufacturer states that its serrated/helix combination design also reduces intake whistle that occurs with helix only designs. Published dyno results are limited, and one widely shared graph came from the brand itself, so treat claimed horsepower gains with caution. Search terms to target: 6.2L Raptor TBS, 46-33011 install, Boss V8 throttle body spacer, F-150 Raptor intake whistle fix.
The manufacturer lists the SVT Raptor 6.2L and Super Duty 6.2L applications, but its own listings differ on the Raptor years. Confirm your truck's year and VIN with the manufacturer before ordering.
The manufacturer says its serrated/helix design is intended to reduce the whistle that helix-only spacers produce. Results vary by intake setup and driving style.
The manufacturer's install sheet for a sibling Silver Bullet spacer (PN 46-32011) describes a process that is generally applicable: remove the intake tube, disconnect the throttle body harness, remove the Torx T30 throttle body screws, fit the supplied O-ring into the spacer groove, and bolt the spacer on with the supplied M6 screws. It lists 8mm, 10mm, and 13mm sockets, a Torx T30 driver, and a 3/16" Allen key, and specifies tightening with a 10mm socket to 71 in-lbs. The sheet also advises retightening all screws and clamps after 100 miles. Confirm the exact steps for 46-33011 with the manufacturer, since that sheet covers a different part number.
