Holley EFI Mid-Rise Intake-GM LS3/L92 Engine Fastener Kits NOTE: The 20-121 is not

NOTE: The 20-121 is not designed for use with some early model Holley carbs

Includes 1 injectorFAST is the leading developer of electronic fuel injection systems

Manufacturer certified to comply with the SFI Foundation's 16

No provisions for exhaust heated chokes or EGR

Holley EFI Mid-Rise Intake-GM LS3/L92 Engine Fastener Kits NOTE: The 20-121 is notHolley Mid Rise Intake GM LS3 L92 Single Plane MidRise EFI LS Intake Manifold. Fits all GM LS Gen III engines equipped with LS3 L92 style rectangular port cylinder heads Includes mounting bolts & washers as well as pipe plugs for Manifold vacuum and MAP sensor ports. Also includes O ring cylinder head mounting flange gaskets for an OEM style seal. This manifold will not work with factory fuel rails and requires the use of Holley Fuel Rail Kit HLY534