Air and Fuel› Fuel Injection Systems and Components - Electronic

FiTECH FUEL INJECTION

Retro LS Port 750 HP EFI System w/LS3 Intake

$2,658.00

SKU: F03O 37003

In Stock
In Stock
Ships by Jun 9
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The FiTech Fuel Injection Retro LS Port 750 HP EFI Classic Gold System With Cast LS3 Intake (MPN 37003) is a comprehensive fuel injection system designed for LS3 engines, capable of supporting up to 750 horsepower on gasoline and compatible with boost or nitrous.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandFiTECH FUEL INJECTION
Part NumberF03O 37003

Videos

FiTech EFI Ultimate Rebel LS Kit

FiTech EFI Ultimate Rebel LS Kit

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy