LS Throttle Body Adapter / 3 Bolt Intake to 4 Bolt TB

In stock
LS Throttle Body Adapter / LS1 3 Bolt Intake to LS3 4 Bolt TB DBC


WARNING - This product can expose you to chemicals including nickel, which is known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to


ALUMINUM: Most of the aluminum alloys used today contain some level of lead, usually less than .1%. Lead is known to the state of California to cause cancer and reproductive harm. Most aluminum alloys are physiologically inert in their solid form, and the lead is contained within, however user-generated dust and/or fumes may pose a hazard if inhaled or ingested. Heating beyond a certain temperature may also provide avenues for exposure.


STEEL (steel bolts):  Steel is an iron alloy with several metals including Nickel and Chromium. Both Nickel and Chromium are known to the State of California to cause cancer and reproductive harm, respectfully. This warning applies to stainless steels as well.


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, Kansas from aerospace grade, USA produced, 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


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