LS3 42LB OEM Injectors

LS3 / 42lb Fuel Injectors – Genuine OEM, Data-Backed Precision for Swaps or Heads/Cam/Low Boost Applications on pump gas.

Unlock reliable power with these genuine LS3-style 42 lb/hr fuel injectors, rated at 42 lb/hr at 43.5 PSI. These high-quality OEM units are perfect for naturally aspirated and mild boosted applications handling 500+ HP with the right setup and a boost-referenced fuel pressure regulator.

What sets these injectors apart is their factory-backed flow data—critical for achieving a clean, efficient custom tune. Unlike aftermarket "equivalents" with questionable specs, nothing beats the accuracy and reliability of OEM injector data when it comes to drivability, fuel trims, and idle quality. Whether you're doing a Gen 3/4 LS swap, upgrading your stock fuel system, or dialing in your turbocharged 5.3, these injectors drop in and deliver consistent performance.

Features:

• Genuine OEM-quality LS3-style injectors

• 42 lb/hr @ 43.5 PSI / ~48 lb/hr @ 58 PSI

• EV6 / USCAR connectors

• Compatible with factory ECUs and HP Tuners

• Ideal for LS swaps, cammed setups, and turbo builds

• Plug-and-play with known, proven injector data for tuning