LS 3 Bolt Intake to 4 Bolt Throttle Body
- Has 75mm (see below for larger sizes) through hole, tapered to 92mm for the throttle body
- Works with both DBW and DBC throttle bodies
- Made in Wichita, KS from aerospace grade, USA billet aluminum
- Includes: adapter plate, bolts, and O-ring seal
- Natural finish aluminum as shown
If running a throttle body larger than 92mm, then this will require an additional spacer sku 551517 and longer bolts.
(LS3 throttle body + 551517 spacer + 551513 adapter uses M6-50mm bolts) *bolts available upon request
