Replacement RC31430007 Multi-Port Fuel Injector Assembly 5.0L 5.7L V8 Vortec Spider

The Replacement RC31430007 is a direct-fit multi-port fuel injector assembly — commonly known as a spider injector — designed for GM 5.0L and 5.7L Vortec V8 gasoline engines. This central port injection (CPI) unit replaces OEM part numbers 19210687 and 93441235, along with cross-references FJ504, 89060440, 25340347, 17114163, and 2173029.

The spider injector assembly sits beneath the upper intake manifold and distributes fuel through individual poppet nozzle lines to each cylinder. Symptoms of a failing unit include rough idle, hard starting — particularly in cold weather — poor fuel economy, and engine misfires. Replacing the assembly restores proper fuel atomization and combustion efficiency.

Key Features:

• Direct replacement for OEM spider fuel injector assembly
• Designed for 5.0L (305ci) and 5.7L (350ci) Vortec V8 gasoline engines
• Aids in cold-weather starting and helps maintain a stable engine idle
• 8-cylinder central port injection design with individual poppet nozzle arms
• Sold as a single complete assembly unit
• Replaces OEM Part Numbers: 19210687, 93441235, FJ504, 89060440, 25340347, 17114163, 17115381, 2173029

This fuel injector assembly is the correct replacement for maintaining proper fuel delivery and engine performance on equipped GM full-size trucks and vans with the Vortec V8 engine.