OER AUTHORIZED 22866587B Duramax 6.6L

( Brand: Oer Authorized ), ( Manufacturer Part Number: 22866587B )

Review OER AUTHORIZED Chevrolet Gmc Pickup 6.6l Duramax fits SILVERADO SIERRA 3500 2500HD 2011–2014

High-Performance 6.6L Duramax Diesel Fuel Pump Assembly for 2011-2014 Chevrolet Silverado 2500HD/3500 and GMC Sierra 2500HD/3500

OER's 22866587B Fuel Pump Assembly is a premium replacement component designed specifically for the powerful 6.6L Duramax diesel engines found in 2011-2014 Chevrolet Silverado 2500HD/3500 and GMC Sierra 2500HD/3500 pickup trucks. This fuel pump is a crucial part of the vehicle's powertrain, responsible for delivering diesel fuel from the tank to the engine at the correct pressure and volume.

This OER fuel pump assembly is an exact fit for your truck, ensuring a seamless installation and eliminating the need for any modifications. It is engineered to match the original equipment in terms of performance, durability, and compatibility. The fuel pump is constructed from high-quality materials, including cast iron and hardened steel, to withstand the demands of heavy-duty applications.

The OER 6.6L Duramax Fuel Pump Assembly features a robust design with a single-piece, cast iron housing that provides excellent heat dissipation and resistance to corrosion. The pump is equipped with a precision-machined, billet steel rotor and a high-tensile, carbon-composite stator, ensuring smooth and efficient fuel delivery. The pump also includes a heavy-duty, O-ring-sealed, mechanical fuel filter to prevent debris from entering the fuel system and causing damage.

Installing the OER 22866587B Fuel Pump Assembly is a straightforward process that can be completed by most DIY enthusiasts with basic tools. The package includes all necessary hardware, such as mounting bolts, gaskets, and seals, to ensure a hassle-free installation. Additionally, OER provides clear installation instructions to guide you through the process step-by-step.

By choosing OER's 6.6L Duramax Fuel Pump Assembly, you are investing in a reliable and long-lasting solution for your pickup truck. This fuel pump is backed by a comprehensive 2-year/unlimited mile warranty, giving you peace of mind and confidence in your purchase. Upgrade your truck's fuel system with OER's high-performance fuel pump assembly and enjoy improved acceleration, better fuel efficiency, and extended engine life.

Pros and Cons of buying a 2011-2014 Chevrolet Silverado/GMC Sierra 2500HD/3500 6.6L Duramax

1. Powerful Engine: The Duramax 6.6L V8 Turbo-Diesel engine delivers impressive torque, making it suitable for towing heavy loads and hauling large payloads.

2. Reliability: Known for their durability, these trucks have a reputation for being reliable workhorses, able to withstand heavy use and harsh conditions.

3. Towing Capacity: With a maximum towing capacity of up to 23,100 lbs, this vehicle is ideal for those who need a truck for heavy-duty towing.

4. Resale Value: Duramax-powered Silverados and Sierras tend to hold their value well compared to other trucks in the same class.

1. Fuel Consumption: Due to its large engine and power, fuel efficiency is not the strongest suit of this vehicle.

2. Maintenance Costs: As with any diesel engine, maintenance costs can be higher than those of gasoline engines, particularly when it comes to replacing parts like the DPF (Diesel Particulate Filter) and EGR (Exhaust Gas Recirculation) system.

3. Noise Level: Some users have reported that the Duramax engine can be noisy, especially during acceleration.

4. Interior Design: Compared to some competitors, the interior design and materials may feel somewhat dated or lacking in premium features.

The 2011-2014 Chevrolet Silverado/GMC Sierra 2500HD/3500 6.6L Duramax is a reliable, powerful, and capable truck, making it a great choice for those who need a heavy-duty towing vehicle. However, potential buyers should be prepared for higher maintenance costs, lower fuel efficiency, and a slightly less refined interior compared to some competitors.

If you require a truck for heavy-duty towing and hauling, and are willing to accept the higher maintenance costs and potential for noise associated with a diesel engine, then the 2011-2014 Chevrolet Silverado/GMC Sierra 2500HD/3500 6.6L Duramax could be an excellent choice for you. If fuel efficiency is a priority or if you prefer a more premium interior, you may want to consider other vehicles in the class. Always ensure to inspect the vehicle's history and maintenance records before making a purchase.

Details:

Pressure cap to replace OE part # 13502509. Includes 20 lb. Manufactured to correct configuration replicating the original in appearance and fitment. This tank replaces GM part number #s 22866587 25869265 22810003 or Part slink # GM3014183.

Reproduction radiator overflow jar or coolant recovery tank for 2011 14 Chevy Silverado and GMC Sierra 2500HD 3500 Pickup with Duramax 6.6L Diesel engine.

part #: 22866587b price

• $1453.95

specifications ocoosys:

• for models: 3500, 2500hd, Silverado, Sierra
• for makes: Chevrolet, Gmc
• for years: 2011-2014
• brand: Oer Authorized
• mpn: 22866587b

returns ocoosys:

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

general ocoosys:

• Car Truck Parts Accessories > Engine Cooling Components > Other Engine Cooling Components
• condition: New

offer ocoosys:

• started: January 9, 2026
• options: Ship-to-home
• sold: 0
• availability: In Stock
• quantity: 6

shipping ocoosys:

• transit: 4-11 Days
• class: Standard, Expedited
• type: Calculated
• carrier: USPS, UPS, FedEx
• service: USPS Ground Advantage, UPS Ground, UPS 2nd Day Air, FedEx Ground / FedEx Home Delivery
• cost: $10.27

payments ocoosys:

• credit card: Discover
• wallet: Apple-pay
• other

seller ocoosys:

• rating: 99.6%
• city: Huntington Beach, California
• # reviews: 39005

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