The aFe 46-34017B is a black anodized throttle body spacer for the LT2 6.2L V8 in the C8 Corvette. It mounts between the factory intake tube and the throttle body. It is machined from 6061-T6 billet aluminum and uses a serrated/helix entry that adds turbulence just ahead of the throttle plate, which is aimed at quicker throttle tip-in and stronger mid-range pull. The serrated profile is also meant to suppress the intake whistle that helix-only spacers often produce, so it suits a car that is driven daily as well as on track. Because it uses the factory mounting points, it is a bolt-on upgrade that keeps the original intake layout intact.
Fitment is limited to the factory air intake. The spacer will not work with aFe's own intake systems, including the 57-10013D, 57-10013R, 58-10007D, and 58-10007R, and those setups require the separate 46-34023B spacer. Each kit includes a gasket and a silicone coupling for sealing to the factory intake. The listed install time is about one hour, with an easy-to-moderate difficulty rating. Searches for a C8 Corvette LT2 throttle body spacer, 46-34017B fitment, or a serrated helix spacer that reduces intake whistle lead to this part.
No. This part is designed for the factory intake only. For aFe POWER intake systems, the separate 46-34023B spacer is the intended match.
The kit includes a gasket and a silicone coupling, and it bolts into the factory mounting locations.
The listed install time is about one hour, with an easy-to-moderate difficulty rating.
This is rated an easy-to-moderate job with roughly one hour of listed labor. Plan on a 7mm and 10mm socket set, T-15 and T-30 Torx bits, 2.5mm and 3.5mm hex bits, a ratchet with extensions and a wobble joint, a small flat-head screwdriver, and a push clip removal tool. Take care when releasing the intake clamp and the push clips, and seat the gasket and silicone coupling fully so the seal holds. Review the manufacturer's instruction manual before you start.
