*excludes Alaska, Hawaii & Puerto Rico

Gen 5 LT4 Cylinder Head to LT1 Intake Adapter Plates Intake Manifold (LT4 spacer)

In stock
- +

LT4 Cylinder Heads to LT1 Intake Manifold Adapter Plates

Compatible with: 2014 and newer V8 LT4 series heads

*** Some intake manifolds will require modification of alignment pin to sit flush on adapters***
  • Includes: 2 adapter plates (1/2" thick) with 8 O-ring seals and 10 flange to head bolts
  • Made in Wichita, Kansas from USA produced 6061-T6 billet aluminum
  • Can also be used as an intake manifold spacer for LT4 bolt pattern supercharger or intake

*note: these plates will be raised on the lower edge until the intake manifold is installed and tightened down to compress the adapter seals

More Information

Bullet Point 1 Intake Manifold Spacer Compatible With LT4 bolt Pattern Supercharger Or Intake
Bullet Point 2 Made in Wichita Kansas from Aerospace Grade USA Billet Aluminum
Bullet Point 3 Includes Two Adapter Plates (1/2" thick) With Eight Oring Seals And Ten Flange To Head Bolts
Bullet Point 4 Compatible With 2014 And Newer V8 LT4 Series Heads
Bullet Point 5 Compatible With LT4 Cylinder Heads to LT1 Intake Manifold Adapter Plates
Manufacturer Part Number 551586
UPC 656729845868
Weight 3.300000
ICT Manufacturer ICT Billet
United States United States
Length Inches 17
Width Inches 3
Height Inches 1
Download .PDF for Vehicle No

WARNING - This product can expose you to chemicals including lead, 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.