GMC 85737134 Engine Motor 84655059 6.6L V8 16V L5P 33K

( Manufacturer Part Number: 85737134 ), ( Fitment Type: Direct Replacement ), ( Mounting Hardware Included: No ), ( Fuel Type: Diesel ), ( Type: Engine Motor ), ( Ipn: 84655059 ), ( Oe/oem Part Number: 12621644 / 545275919 / 12702537 ), ( Engine Size: 6.6 L ), ( Country Of Origin: Mexico )

Review GMC 6.6l V8 16v Engine Motor L5p 33k Miles Oem fits SIERRA 2500 4WD 2017–2025

Introducing the GMC 85737134 2017-2025 Sierra 2500 4WD 6.6L V8 16V Engine Motor L5P with an impressive output of 33,000 pounds of maximum towing capacity. This powerhouse engine is a part of General Motors' Duramax family, specifically the L5P generation.

The L5P 6.6L V8 Turbo-Diesel engine is renowned for its impressive torque delivery, generating a robust 660 lb-ft at 1,500 rpm. The engine's max horsepower stands at 327 hp, ensuring ample power for heavy-duty towing and hauling tasks.

This engine is mated to the Allison 1000 six-speed automatic transmission, which delivers smooth and efficient power transfer to the 4WD system. The result is a responsive and agile driving experience, even when dealing with heavy loads.

The L5P engine features several advanced technologies to optimize performance and efficiency. These include a variable geometry turbocharger, which improves low-end torque and reduces turbo lag. Additionally, the engine includes a selective catalytic reduction (SCR) system, which utilizes Diesel Exhaust Fluid (DEF) to reduce harmful emissions.

The engine block is made of compacted graphite iron, which offers increased strength and durability. The cylinder liners are made of ceramic composite material, reducing friction and improving engine life. The engine also features an integrated exhaust brake system, which helps to control vehicle speed when descending steep grades.

The GMC 85737134 engine is built with the highest quality materials and manufacturing processes, ensuring long-lasting performance and reliability. It is designed to meet the stringent emissions requirements of the Environmental Protection Agency (EPA) and the California Air Resources Board (CARB), making it an eco-friendly choice for heavy-duty towing and hauling applications.

In summary, the GMC 85737134 2017-2025 Sierra 2500 4WD 6.6L V8 16V Engine Motor L5P is a powerful and efficient solution for those who need to tow and haul heavy loads. With its impressive torque output, advanced technologies, and durable construction, this engine is an excellent choice for anyone seeking a reliable and capable heavy-duty pickup truck.

Pros and Cons of Buying a 2017-2025 GMC Sierra 2500 4WD with a 6.6L V8 16V Engine Motor L5P and 33,000 Miles

The 2017-2025 GMC Sierra 2500 4WD with a 6.6L V8 16V Engine Motor L5P and 33,000 miles is a popular choice for those seeking a reliable and powerful full-size pickup truck. In this analysis, we will examine the key advantages and disadvantages of purchasing this specific vehicle.

1. Powerful Engine: The 6.6L V8 Duramax diesel engine is renowned for its impressive torque and horsepower, making it ideal for towing heavy loads and tackling challenging terrain.

2. Towing Capacity: With a maximum towing capacity of 18,000 pounds, this truck can easily handle large trailers and heavy equipment.

3. Durability: The Sierra 2500 is known for its robust construction, ensuring long-lasting performance and reliability.

4. Comfortable Cabin: The interior offers ample space, advanced technology features, and comfortable seating, making for an enjoyable driving experience.

5. Capability: With four-wheel drive and a high ground clearance, this truck can handle a variety of off-road conditions.

1. Fuel Economy: The Duramax diesel engine is not particularly fuel-efficient, resulting in higher operating costs compared to gasoline-powered alternatives.

2. Maintenance Costs: Diesel engines generally require more frequent maintenance and repair work, which can add to the overall cost of ownership.

3. Size and Handling: The large size and weight of the Sierra 2500 can make it challenging to maneuver in tight spaces and navigate city streets.

4. Price: As a high-end, heavy-duty pickup truck, the Sierra 2500 comes with a significant price tag.

The 2017-2025 GMC Sierra 2500 4WD with a 6.6L V8 16V Engine Motor L5P and 33,000 miles offers impressive power, towing capacity, and durability, making it an excellent choice for those who require a capable and robust pickup truck. However, it also comes with drawbacks such as lower fuel economy, higher maintenance costs, and a larger price tag. Ultimately, the decision to purchase this vehicle depends on your specific needs, preferences, and budget.

If you require a powerful, heavy-duty pickup truck for towing and off-road capabilities, the 2017-2025 GMC Sierra 2500 with a 6.6L V8 16V Engine Motor L5P is an excellent option. However, if fuel efficiency, lower maintenance costs, or a smaller price tag are priorities, it may be worth considering alternative vehicles. Carefully weigh the pros and cons and consult with a trusted dealership or automotive expert to make an informed decision.

Details:

THIS ENGINE COMES WITH A 30 DAY, PART ONLY WARRANTY. Therefore, defective electronic parts are eligible for exchange only, unless a replacement cannot be sourced. It does have damage as pictured. This is an L5P engine removed from a 2021 GMC Sierra 2500 with 33k miles.

Shipping: Shipping on most parts is done via UPS USPS Ground. Replacement only for defective merchandise. Contact at anytime with questions. Residential delivery is not included in the free shipping.

It will fit 2017 2018 2019 2020 2021 2022 2023 2024 2025 Silverado Sierra 2500 3500 model's. Shipping is to a commercial address in the lower 48 states. The harness has a few damaged connectors which are pictured. The power steering pulley and tank, outer crank pulley, oil filter housing adapter plate will need to be replaced.

The rear bell housing adaptor is also damaged as seen.

part #: 85737134 price

• $77.81

specifications grokengines:

• for models: 2500, 4wd, Sierra
• for makes: Gmc
• for years: 2017-2025
• mpn: 85737134
• fitment type: Direct Replacement
• mounting hardware included: No
• fuel type: Diesel
• type: Engine Motor
• ipn: 84655059
• oe/oem part number: 12621644 / 545275919 / 12702537
• engine size: 6.6 L
• country of origin: Mexico

seller grokengines:

• rating: 100.0%
• # reviews: 342
• city: Alamo, Texas

general grokengines:

• condition: Used
• Car Truck Parts Accessories > Engines Engine Parts > Engines

offer grokengines:

• started: November 29, 2025
• availability: In Stock
• quantity: 1
• options: Ship-to-home
• best offers: True
• sold: 0

shipping grokengines:

• cost: $450.00
• type: Fixed
• service: Flat Rate Freight
• class: Freight

returns grokengines:

• policy: No Returns

payments grokengines:

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

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