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OEM GM Fuel Injectors

12720121 - : Low-Flow Multiport Fuel Injector Service Kit for GM Image

Low-Flow Multiport Fuel Injector Service Kit

This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$119.00
MSRP $167.01
Save $48.01
28.7% Off
19256465 - : Fuel Injector O-Ring Kit with Washers for GM Image

Fuel Injector O-Ring Kit with Washers

Silverado, sierra. Express, savana. 6.6l diesel. Incl.O-Rings And Seals. Set Per Bank. Helps provide a seal to prevent fuel leaks Helps...
$33.05
MSRP $50.84
Save $17.79
35% Off
17113205 - : Fuel Injector O-Ring Kit with Brackets for GM Image

Fuel Injector O-Ring Kit with Brackets

CPI Unit Service Kit. All models. 5.7l. All models. 7.4l. All models. 5.0l. All models. 4.3l. Helps provide a seal to prevent fuel...
$37.70
MSRP $58.00
Save $20.30
35% Off
55504598 - : High Pressure Diesel Fuel Injector Assembly for GM Image

High Pressure Diesel Fuel Injector Assembly

Canyon, Colorado. 2.8l diesel. High pressure. Atomizes fuel into the engine's intake manifold or cylinders, as part of the fuel and...
$287.72
MSRP $479.54
Save $191.82
40% Off
12690532 - : Passenger Side Fuel Injector Wiring Harness for GM Image

Passenger Side Fuel Injector Wiring Harness

This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$89.60
MSRP $125.74
Save $36.14
28.7% Off
12688688 - : Passenger Side Fuel Injector Wiring Harness for GM Image

Passenger Side Fuel Injector Wiring Harness

Port Injector. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$70.75
MSRP $99.30
Save $28.55
28.8% Off
12659653 - : Direct Fuel Injector Hold Down Clamp for GM Image

Direct Fuel Injector Hold Down Clamp

DI Injector. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$1.17
MSRP $1.74
Save $0.57
32.8% Off
88894355 - : Central Multi-Port Fuel Injector Mounting Bracket for GM Image

Central Multi-Port Fuel Injector Mounting Bracket

This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$41.81
MSRP $64.32
Save $22.51
35% Off
12688689 - : Driver Side Fuel Injector Wiring Harness for GM Image

Driver Side Fuel Injector Wiring Harness

Port Injector. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$75.54
MSRP $106.02
Save $30.48
28.7% Off
12621095 - : Driver Side Fuel Injector Wiring Harness for GM Image

Driver Side Fuel Injector Wiring Harness

This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$178.99
MSRP $298.32
Save $119.33
40% Off
12690811 - : Driver Side Fuel Injector Wiring Harness for GM Image

Driver Side Fuel Injector Wiring Harness

This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$49.92
MSRP $67.37
Save $17.45
25.9% Off
12690812 - : Passenger Side Fuel Injector Wiring Harness for GM Image

Passenger Side Fuel Injector Wiring Harness

This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$64.71
MSRP $87.34
Save $22.63
25.9% Off

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Other Engine Parts that Fuel Injectors Work With

One of the most important parts of an engine is the fuel injector, which supplies fuel to the combustion chamber. They are not autonomous. Fuel injectors are one of several engine components that collaborate to guarantee fuel supply efficiency, combustion perfection, and peak performance.

Fuel Pressure Regulator

A fuel pressure regulator is used to keep the fuel rail, which houses the fuel injectors, at the proper pressure. The fuel injectors must be subjected to constant pressure for precise fuel distribution. Fuel injection pressure issues can negatively impact engine performance and efficiency, resulting in either excess fuel or a deficiency.

Engine Control Unit

Several engine functions, including fuel injection, are controlled by the Engine Control Unit (ECU), which is like the machine's brain. It finds the best time and amount to inject fuel based on data from several sensors. To achieve optimal combustion and performance, the ECU modifies the injectors' activity according to engine speed, load, and temperature variables.

Fuel Pump

It is the job of the fuel pump to transfer fuel under pressure from the fuel tank to the fuel injectors. Maintaining a steady and controlled fuel flow enables the injectors to deliver exact quantities of fuel to the combustion chamber. The fuel injectors wouldn't get the required fuel if the pump weren't working.

Intake Manifold

The air-fuel mixture is sent to the engine's cylinders through the intake manifold from the fuel injectors. It checks that the mixture is delivered to each cylinder in the right proportion for combustion. Improved engine performance and gas mileage are outcomes of an intake manifold's careful design, which maximizes airflow and fuel distribution.

Ignition Plugs

The fuel injectors feed an air-fuel combination to the combustion chamber, where spark plugs ignite it. For smooth engine operation, efficient combustion, and power output, spark timing is crucial. The fuel injectors and spark plugs must work in tandem for the engine to function at its best.

Your vehicle's engine will run more efficiently and last longer if you know how fuel injectors interact with these components. You can keep your engine in top shape by performing routine maintenance and replacing these parts as they wear out.