ACDELCO GM/GM GENUINE PARTS 55510921 Rail High Slp 193468275346

( Brand: Acdelco Gm/gm Genuine Parts ), ( Modified Item: No ), ( Epid: 8050961973 ), ( UPC: 193468275346 ), ( Manufacturer Part Number: 55510921 )

Review ACDELCO GM/GM GENUINE PARTS Rail Asm High Slp

The ACDelco GM 55510921 is a Rail High-Pressure Fuel Pump designed specifically for select General Motors applications. This fuel pump is engineered to deliver an optimal performance level, ensuring a reliable and efficient fuel delivery system for your vehicle.

The Rail High-Pressure Fuel Pump is a key component of your vehicle's fuel system, responsible for supplying fuel under high pressure to the engine for combustion. It features a robust design with a compact size, making it an ideal fit for the specific applications it serves. The pump is engineered with a durable cast aluminum housing that provides excellent protection against corrosion and wear, extending its service life.

The ACDelco GM 55510921 is a High-Pressure Direct Injection (HPDI) fuel pump, capable of delivering fuel at pressures up to 23,250 psi (1,600 bar). This high-pressure capability is essential for modern engines that rely on precise fuel delivery for optimal performance and fuel efficiency. The pump's internal components, including the impeller and rotor, are designed to withstand the extreme pressure conditions and maintain consistent fuel flow.

This fuel pump is also designed with a low-speed operation feature, allowing it to operate more efficiently at idle and cruising speeds. This not only improves fuel economy but also helps reduce engine noise and vibration. The low-speed operation is achieved through a unique design that utilizes a variable geometry stator, which adjusts the fuel flow rate based on engine load and vehicle speed.

The ACDelco GM 55510921 is a direct replacement for the original equipment fuel pump on select GM applications. It comes with all necessary hardware for a hassle-free installation, including fuel lines, gaskets, and mounting brackets. The fuel pump is also covered by ACDelco's 12-month/12,000-mile limited warranty, ensuring peace of mind for the vehicle owner.

In summary, the ACDelco GM 55510921 Rail High-Pressure Fuel Pump is a high-performance, durable, and efficient component designed to meet the fuel delivery needs of select General Motors applications. Its robust design, high-pressure capabilities, and low-speed operation features make it an excellent choice for maintaining the optimal performance and fuel efficiency of your vehicle's fuel system.

The AC Delco GM/GM 55510921 rail high pressure fuel pump is a crucial component in the fuel delivery system of General Motors vehicles. It is responsible for supplying fuel under high pressure to the engine's injectors. Here are some pros and cons of buying this fuel pump:

1. OEM Quality: This fuel pump is an original equipment manufacturer (OEM) part, which means it is manufactured by the same company that originally equipped it in the vehicle. This ensures a perfect fit and optimal performance.

2. Durability: AC Delco fuel pumps are known for their durability and reliability. They are designed to meet or exceed the original equipment specifications, providing long-lasting performance.

3. High-Pressure Capability: This fuel pump is capable of delivering fuel at high pressure, which is essential for modern vehicles with direct fuel injection systems.

4. Wide Application: This fuel pump fits a wide range of GM vehicles, making it a versatile and convenient choice for those who own multiple GM vehicles or those who want to keep a spare fuel pump on hand.

1. Price: The AC Delco GM/GM 55510921 rail high pressure fuel pump is priced higher than some aftermarket fuel pumps. However, the higher price reflects the OEM quality and durability of the product.

2. Installation Complexity: Installing a fuel pump can be a complex process, especially in modern vehicles with intricate fuel delivery systems. It is recommended to have the fuel pump installed by a professional mechanic to ensure proper installation and safe operation.

The AC Delco GM/GM 55510921 rail high pressure fuel pump is a high-quality, reliable, and durable option for those in need of a new fuel pump for their GM vehicle. While it may come with a higher price tag than some aftermarket options, its OEM quality and durability make it a worthwhile investment for those who prioritize performance and reliability.

If you are in need of a new fuel pump for your GM vehicle and prioritize performance, reliability, and a perfect fit, then the AC Delco GM/GM 55510921 rail high pressure fuel pump is the recommended option. While the installation process may be complex, it is worth the investment for the long-term benefits of having a high-quality, OEM fuel pump in your vehicle.

part # 55510921 price

• $566.24

specifications injectiopug:

• brand: Acdelco Gm/gm Genuine Parts
• modified item: No
• epid: 8050961973
• upc: 193468275346
• manufacturer part number: 55510921

offer injectiopug:

• availability: In Stock
• quantity: 1
• sold: 0
• started: July 21, 2025
• options: Ship-to-home
• best offers: True

returns injectiopug:

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

payments injectiopug:

• credit card: Visa
• other
• wallet: Paypal

general injectiopug:

• Air Fuel Delivery > Fuel Injection Parts > Additional Fuel Injection Parts
• condition: New

shipping injectiopug:

• type: Fixed
• class: Standard
• service: Standard
• cost: $0.00
• transit: 3-7 Days

seller injectiopug:

• rating: 97.1%
• # reviews: 51481

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