GMC TRUCK SIERRA150 Fuel Pump Engine 323-10604 5.3L 208949

( Brand: Gmc Truck ), ( Manufacturer Part Number: SIERRA150 ), ( Part Type: Fuel Pump Engine ), ( Conditions Options: Engine Mounted, At, 4x4 ), ( Genuine Oem: Yes ), ( Ipn: 323-10604 )

Review GMC TRUCK Fuel Pump Only Engine Mounted 5.3l Fits Pickup fits SIERRA 1500 1925–2022

The GMC 323-10604 fuel pump is a crucial component in the fuel delivery system for specific 5.3L engines found in 2002-2005 GMC Sierra 1500 models. This fuel pump is meticulously engineered by General Motors to ensure reliable and efficient fuel delivery to the engine.

The fuel pump is designed as an in-tank unit, meaning it is located within the fuel tank itself. This design feature allows the fuel to be pressurized as it is being delivered to the engine, ensuring a consistent fuel supply for optimal engine performance. The pump housing is engineered from durable materials, such as cast aluminum, to withstand the rigors of daily driving and the corrosive effects of vehicle fuel.

The impeller, which is the component responsible for creating the suction and pressure required to transfer fuel, is precisely machined to minimize friction and wear. The impeller is also designed to handle various fuel types, including those containing ethanol, without compromising performance or durability.

The GMC 323-10604 fuel pump features a robust, multi-spline drive shaft that connects the impeller to the engine accessory drive belt. This design ensures a secure connection between the pump and engine, minimizing the risk of vibration and misalignment, which can lead to premature failure.

The fuel pump is also equipped with a built-in, temperature-controlled, thermal switch. This feature protects the pump from overheating by shutting off the fuel delivery when the engine temperature exceeds a certain threshold. Once the engine temperature returns to normal, the fuel pump resumes its operation, ensuring continuous and efficient fuel delivery to the engine.

The GMC 323-10604 fuel pump is a vital component that plays a significant role in the overall performance and fuel efficiency of your 5.3L GMC Sierra 1500. By investing in a genuine GM replacement fuel pump, you can enjoy the peace of mind that comes with knowing you have a high-quality, reliable component that is specifically designed for your vehicle.

Pros and Cons of Buying GMC 323-10604 Fuel Pump for 5.3L 2002-2005 Sierra 1500

a. OEM (Original Equipment Manufacturer) replacement: This fuel pump is a factory-original part, ensuring a perfect fit and reliable performance.

b. Improved fuel efficiency: A faulty fuel pump can cause inefficient fuel delivery, leading to poor gas mileage. Replacing it with a new one can help restore optimal fuel economy.

c. Smooth engine operation: A new fuel pump can help eliminate surging or stalling issues, providing a more consistent driving experience.

d. Longer lifespan: A new fuel pump is designed to last longer than a worn-out or failing one, saving you from potential future replacement costs.

e. Peace of mind: Investing in a new fuel pump from a reputable manufacturer like GMC can give you confidence in your vehicle's reliability and performance.

a. Cost: A new OEM fuel pump can be more expensive than aftermarket or rebuilt options. However, the added peace of mind and warranty coverage may be worth the investment.

b. Installation complexity: Depending on your mechanical skills and the location of the fuel pump, installation may be a challenging process. In some cases, you may need to drain the fuel tank or remove other components to access the fuel pump.

c. Potential for fuel leaks: During installation, there's a risk of fuel leaks if not done correctly. It is essential to follow proper installation procedures and use the correct seals and gaskets to minimize this risk.

Investing in a new OEM fuel pump (GMC 323-10604) for your 5.3L 2002-2005 Sierra 1500 comes with several advantages, including improved fuel efficiency, smooth engine operation, longer lifespan, and peace of mind. However, it also comes with some disadvantages, such as a higher cost and potential installation complexities. Ultimately, the decision to purchase a new fuel pump depends on your preferences, budget, and mechanical abilities. If you value the reliability and warranty coverage that comes with an OEM part, it may be worth the investment. Otherwise, you may consider aftermarket or rebuilt options to save on costs.

If you are comfortable with the installation process and willing to pay for the peace of mind and warranty coverage, purchasing the GMC 323-10604 fuel pump would be a good investment. If you're looking to save on costs, consider researching aftermarket or rebuilt fuel pump options. Regardless of your choice, make sure to follow proper installation procedures and take necessary safety precautions when handling fuel and working on your vehicle.

Details:

SIERRA 1500 PICKUP 23-25 pump only engine mounted, 6.2L. SIERRA 1500 PICKUP 22 pump only engine mounted, 5.3L, new style. Standard Warranty. SIERRA 1500 PICKUP 23-25 pump only engine mounted, 5.3L.

SIERRA 1500 PICKUP 22 pump only engine mounted, 6.2L, new style.

part #: sierra150 prices

• $90.99-$245.10

specifications airfueldepo:

• for models: 1500, Sierra
• for makes: Gmc
• for years: 1925-2022
• brand: Gmc Truck
• mpn: Sierra150
• part type: Fuel Pump Engine
• conditions options: Engine Mounted, At, 4x4
• genuine oem: Yes
• ipn: 323-10604

payments airfueldepo:

• other
• credit card: Visa
• wallet: Google-pay

offer airfueldepo:

• availability: In Stock
• started: January 12, 2026
• sold: 0
• options: Ship-to-home
• quantity: 1

returns airfueldepo:

• time: 30 Days
• policy: Returns Accepted
• paid by: Buyer

seller airfueldepo:

• # reviews: 309
• city: Midvale, Utah
• rating: 98.2%

shipping airfueldepo:

• type: Fixed
• service: Standard
• cost: $0.00
• class: Standard
• transit: 3-8 Days

general airfueldepo:

• Car Truck Parts Accessories > Air Fuel Delivery > Fuel Pumps Sending Units
• condition: Used

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