Holley EFI- 300-248BK Black Cast Aluminum 4500 EFI Intake Elbow for LS Black

Holley EFI

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Black EFI Throttle Body Intake Elbow 4500 - Fits GM LS Throttle Bodies

These cast aluminum EFI intake elbows allow the use of GM LS throttle bodies on any intake manifold w/ the 4500 mounting flange. Our design incorporates an optimized transition from the throttle body to the intake plenum for maximum airflow and distribution. Dual throttle cable mounting bracket bosses are included while the 4500 flange pattern allow the elbow & throttle body to be mounted forward, sideways, or rearward. The throttle bracket is included. Features (4) vacuum ports, MAP sensor port, machined / port matched to 4500 gasket, and 100° throttle body angle for extra hood clearance. Includes billet MAP sensor port cover, gaskets & hardware. The port design spacing will also allow a transducer to be used if a MAP sensor is not needed. The intake flange has an o-ring groove for a positive flange seal and the o-ring is included as well.


  • Fits GM LS Throttle Bodies
  • 105mm Throttle Body Opening - 100° Mounting Angle
  • Fits Intakes w/ 4500 Flange- designed to use the included o-ring for sealing
  • The 4500 square flange pattern allows Forward, Sideways or Rearward Throttle Body Mounting
  • LS3 Style MAP Sensor Mounting
  • (4) Vacuum Ports – (1) Each 1/4” NPT & 3/8” NPT & (2) 1/8” NPT
  • (2) Throttle Linkage Mounting Bosses
  • Black cast aluminum finish
  • Overall Height 6.4”
Brand Holley EFI
Color Black
Construction Cast
Emission Code 3
Engine GM LS1/LS2/LS6
Finish Black
Fuel System Type EFI
Height 6.4 inch
Material Cast Aluminum
Product Type Intake Elbow
Throttle Bore 105mm
Warranty Limited 90 Day
UPC 090127063453
Part Number 300-248BK

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