A Plus Auto Fuel Injectors for GM 4.8L 5.3L 6.0L V8 — 4-Hole Precision Nozzle, Direct Replacement

A Plus Auto 4-hole fuel injectors replace worn injectors on many 4.8L, 5.3L and 6.0L GM V8 engines, restoring fuel spray pattern and reliable fuel delivery.

These direct-replacement fuel injectors are built for compatibility with a wide range of Chevrolet, GMC, Cadillac, Buick, Isuzu and Hummer V8 applications from the late 1990s through the mid-2000s. Constructed from high-hardness alloy steel with heat-resistant fluororubber seals and a precision 4-hole nozzle, they are designed to provide consistent flow and finer atomization for engines that call for the listed part numbers. The set is backed by a 1-year unlimited-mile warranty and is intended for technicians and DIYers who need correct-fit injectors without altering engine controls.

Which vehicles and engine sizes do these injectors fit?

These injectors were designed to match factory specifications for many GM V8 models—covering 4.8L, 5.3L and 6.0L engines across trucks, SUVs and vans. Check the detailed fit list or your OEM part number to confirm fitment for your VIN and engine code.

• Chevrolet: Silverado, Tahoe, Suburban, Avalanche, Express, Trailblazer, SSR models listed in fit guide.
• GMC: Sierra, Yukon, Savana, Envoy applications across 2000–2007 model years as specified.
• Other: Cadillac Escalade variants, Buick Rainier, Isuzu Ascender/NPR and Hummer H2 where engine sizes match.
• Replaces OEM numbers such as 17113698, FJ315, MP-10006 and cross-references provided.

How do these 4-hole injectors affect engine performance?

The 4-hole nozzle and atomization design aim to produce a finer fuel mist and more uniform spray pattern, supporting consistent combustion when matched to the engine control system. They are intended to restore intended fuel delivery where stock injectors are leaking, clogged or worn.

• Precision 4-hole nozzle for improved fuel distribution in the combustion chamber.
• Advanced atomization reduces large droplets, aiding more even burn.
• High-hardness alloy steel body and heat-resistant seals for durability.
• Use with correct fuel pressure and ECU settings for best results.

What should I know about installation and compatibility checks?

These are direct-replacement injectors but correct installation and pre-checks are important. Verify the OEM part number and inspect fuel rail connectors, O-rings, and wiring harness condition before installation to prevent leaks or misfires.

• Confirm fit by cross-referencing your vehicle year, engine size and part number.
• Replace seals and O-rings during installation; lubricate seals before seating.
• Inspect electrical connectors for corrosion; test injector resistance if uncertain.
• Professional installation recommended for complex diagnostics or adaptations.

What warranty or post-purchase support is provided?

A Plus Auto provides a 1-year, unlimited-mile warranty on these injectors and customer support for fitment questions. If you are unsure about compatibility, contact the seller with your vehicle details before purchasing.

• 1-year unlimited-mile limited warranty included.
• Fitment support available—supply VIN, engine size and model year for verification.
• Replacement or support process outlined at point of sale if defects are found.

Who this is for: Technicians, fleet managers and experienced DIYers who need a direct-fit, durable injector set for GM 4.8L/5.3L/6.0L V8 engines—especially owners restoring fuel delivery on late-1990s to mid-2000s Chevrolet, GMC, Cadillac and related vehicles. If you require guaranteed calibration changes or ECU remaps, consult a service provider; these injectors are designed to match factory specifications when installed and operated with the proper fuel system setup.