2003 GMC Sierra 2500 HD Fuel Injectors

Breathe easy and drive smarter with HELLA’s Mass Air Flow Sensor. It delivers pinpoint airflow data for spot-on fuel-to-air ratios-boosting power, MPG, and throttle response. Plug-and-play install, OE-level accuracy, and the performance your engine craves.

Complete injector seal kit includes all necessary components to properly reseal injector when installed.

Bosch is the leading OE supplier of diesel fuel systems for diesel passenger cars, SUVs, van and pickup trucks.End of line testing using the exact OE test specifications.Guaranteed to provide OE performance and meet all emission specifications. Continuous improvement, manufactured with the latest upgrades to components and specifications.

Bosch is the leading OE supplier of diesel fuel systems for diesel passenger cars, SUVs, van and pickup trucks.

Fel-Pro gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.

The components in this fuel injector O-ring kit are designed to match the fit of the original O-rings on specified vehicles. They are engineered to help ensure leak-free connections to the fuel injectors during service or when the rings are damaged.

Carquest Premium Vehicle Solutions provides high-quality solutions for a wide range of applications. The Driver Information Display Switch allows drivers to easily navigate and customize vital vehicle information, enhancing user experience by providing quick access to important data such as fuel efficiency, navigation, and alerts at their fingertips. Engineered for maximum performance and durability, our products are built to excel in even the most demanding conditions, ensuring reliable operation and long-lasting value.

GM Genuine Parts Fuel Injector and Insulator Retainer Kits are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

WVE is a leading source of advanced vehicle electronics components for replacement applications in the automotive aftermarket and original equipment applications. WVE offers high-technology manufacturing along with innovative solutions and improvements to OE designs. Every component either matches or improves on the OE design to ensure fast, easy installation, superior performance and reliability.

This fuel pressure regulator is engineered to match the function of the original equipment regulator on specified vehicles. It is engineered to help ensure proper fuel injection pressure when the original regulator has failed or is malfunctioning.

The Carquest line of remanufactured OEM fuel injectors are remanufactured using a proven 15 step process at a state-of-the-art remanufacturing facility in the USA. Injectors are thoroughly tested under multiple operating conditions to ensure each injector meets or exceeds OE specifications for flow rate, spray pattern, coil resistance, form, fit and function.

Carquest premium remanufactured injectors are completely torn down, ultrasonically cleaned, inspected and remanufactured using premium components. Each injector is tested on a sophisticated flow bench under multiple operating parameters. This Carquest four-pack kit includes four cylinder-specific high-pressure fuel lines that should be replaced any time the injector is replaced. Replacing all four injectors at the same time with the fuel lines ensures a complete repair and reduces the chance premature injector failure due to contamination from the fuel line. This injector four-pack offers savings over purchasing single injectors and components separately.

This fuel injector sleeve is a direct replacement for an original equipment part. Made of quality materials, this part has undergone try-on testing to ensure a quality fit and a long service life.

Complete kit includes banjo bolt seals to reseal injector fuel return rail manifold on Duramax LB7 engines.

This fuel injection return line gasket kit is designed to match the original components required to repair the fuel line and restore proper pressure on specified vehicles. It’s made of quality components for reliable performance.

Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.

ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your vehicle’s original components. These original equipment pigtail connectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

“The Edelbrock part No. 35993 Pro-Flo 4 XT Sequential Port EFI System for Chevrolet LS GEN III/IV engines is equipped with the latest in technology and features. The EFI system comes complete with a Pro-Flo XT rectangular port black finish intake manifold and 35 Lb./Hr injectors capable of 550 HP with 58 p.s.i. fuel pressure. The new Pro-Flo 4 EFI systems feature an all-new ECU with a faster processor, a water proof design and measures half the depth of the previous ECU. It also has an upgraded Bluetooth chip that is faster, more reliable and will not drop connection. We’ve added more features for the advanced tuner giving you control over air-fuel ratios, ignition curve, idle speed, acceleration fuel, coolant fans, Rev limiter while retaining the simplicity Pro-Flo is known for. The key to the system is our exclusive E-Tuner 4 app with dyno developed base calibrations. The E-Tuner 4 app uses a Bluetooth wireless connection to communicate with the ECU’s self-learning capability to continually adjust the calibration to get the maximize performance of your engine. E-Tuner 4 features a simple and easy to use setup wizard to help you get started. Best of all, the E-Tuner 4 app is free and can be downloaded from the Google Play Store, allowing you to use your personal Android based smart phone or tablet. If you don’t have a compatible device, then we also offer kits that include a 7″” Android tablet with the E-Tuner 4 app pre-installed. Multiple dash displays are included to allow you to monitor engine vitals and performance from your Android smart phone or tablet. Pro-Flo 4 does not require laptop tuning.”

MAHLE® gaskets provide world class sealing products trusted by OEMs & Technicians around the globe.

This fuel cooler is designed to match the fit and function of the original cooler on specified vehicles, and is engineered for durability and reliable performance.

GM Genuine Parts Fuel Injection Throttle Body Mounting Gaskets are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These gaskets help provide an air-tight seal between the throttle body and the intake manifold, and are GM-recommended replacements for your vehicle’s original components. Replace this gasket whenever you service the throttle body, as leaks can negatively affect the air/fuel ratio and compromise performance. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.

Fel-Pro gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.

With Victor Reinz gaskets, you can be sure you are getting sealing solutions that deliver OE quality gasket technology and engineering. That is because Victor Reinz is an original equipment supplier and the trusted choice of manufacturers the world over, offering broad coverage for foreign and domestic cars and trucks. In Victor Reinz gasket sets, you get the right combination of components needed for fast, long-lasting repairs.

Fel-Pro gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.

Fel-Pro gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.

Fel-Pro gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.