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FAST 54090 92mm Big Mouth LT Throttle Body without IAC LS 4-Bolt

Part # FST54090 Be the first to write a review

Compatible with GM® LS Engines equipped with a 4-bolt Throttle Body.

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FAST 54090 92mm Big Mouth LT Throttle Body without IAC LS 4-Bolt

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Big Mouth LT Throttle Bodies™ from FAST® feature a black-wrinkle powder coating. The enlarged bore is a substantial upgrade over stock and allows increased airflow to support higher horsepower. A progressive throttle pulley enhances drivability, especially at low throttle, while a double return spring provides a solid feel and increased safety. A drive-by-cable throttle body (FAST® Big Mouth/Big Mouth LT) is necessary for XFI™ and EZ-EFI® (or other aftermarket EFI customers) running an engine that was originally throttle-by-wire. Includes GM-style IAC & TPS but is also available without them.

Features:

  • Drive-by-cable throttle bodies are necessary for XFI™ & EZ-EFI® running an engine that was originally throttle-by-wire
  • Enlarged 92mm bore is a substantial upgrade over stock & allows increased airflow to support higher horsepower
  • Progressive throttle pulley enhances drivability, especially at low throttle
  • Double return spring provides a solid feel & increased safety
  • Compatible with stock 90mm intake manifold and FAST® LSX or LSXR intakes
  • Black wrinkle finish powder coating for good looks
  • Idle air control motor (IAC) and throttle position sensor (TPS) sold separately
Bore (mm)92
Brand FAST
ColorBlack
Diameter92mm
Emission Code4
Product TypeThrottle Bodies
QuantitySold Individually
WarrantyManufacturer's Limited 1 Year
UPC036584283294
Manufacturer Part Number54090
Part NumberFST54090
4

This part is legal for sale or use on Racing Use Only Vehicles

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street.

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle

Manufacturer's Limited 1 Year: See Details

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