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

In stock
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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

More Information

Bullet Point 1 This throttle body adapter will allow you to install a 4 bolt LS throttle body onto a 3 bolt LS intake. For example, a 92mm billet throttle body
Bullet Point 2 Adapter Has 75mm Through Hole, Tapered To 92mm For The Throttle Body.
Bullet Point 3 Compatible With Both DBW And DBC 4 Bolt Throttle Bodies.
Bullet Point 4 Made in Wichita, KS from aerospace grade, USA billet aluminum.
Bullet Point 5 Throttle Body Adapter Will Come With A Adapter Plate, All Bolts, And An Oring Seal Needed For Installation.
Manufacturer Part Number 551513
UPC 656729845134
Weight 0.844000
ICT Manufacturer ICT Billet
United States United States
Length Inches 5
Width Inches 5
Height Inches .5
Download .PDF for Vehicle No


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.