MOPAR R8450937AB Block Engine 2500-3500

( Manufacturer Part Number: R8450937AB ), ( Model: 2500-3500 ), ( Part Type: Block Engine ), ( Genuine Oem: Yes ), ( Manufacturer Warranty: 1 Year ), ( Fitment Type: Direct Replacement ), ( Make: Ram ), ( Year: 2019 2020 ), ( Parts Included: Only Part Reference 3 On The Diagram Is Included ), ( Replaces Part Number: R8450937aa )

Review MOPAR Genuine Short Block Engine Remanufactured fits 2019–2020

The Mopar R8450937AB Block Engine is a high-performance replacement engine designed for Chrysler, Dodge, and Jeep vehicles. This engine block is part of the Mopar Performance line, engineered to deliver superior power and durability for enthusiasts and racers.

The R8450937AB Block Engine features a cast iron construction, which offers superior strength and heat dissipation capabilities compared to aluminum blocks. This is essential for high-performance applications where increased power output and sustained use can generate significant heat. The cast iron construction also ensures increased durability, allowing the engine to withstand the stresses and pressures of high-performance driving.

This engine block comes with a bore size of 3.915 inches and a stroke length of 3.445 inches. These dimensions provide an optimal balance between power and efficiency, making it suitable for both street and racing applications. The engine block also comes prepped with a raised deck and countersunk cylinder bores, allowing easy installation of aftermarket pistons and rings.

The R8450937AB Block Engine includes several key upgrades to enhance its performance capabilities. These upgrades include a scratch-annealed deck surface, which reduces the risk of cracking under high cylinder pressures. The engine block also features a raised fillet radius on the crankshaft mains, which helps to distribute the torque more evenly and reduces stress concentrations.

The Mopar R8450937AB Block Engine is designed to work seamlessly with aftermarket performance parts, making it a popular choice among enthusiasts and racers. Its high-performance capabilities, combined with its durable cast iron construction, make it a top choice for those looking to extract maximum power from their Chrysler, Dodge, or Jeep vehicles. Whether you're hitting the track or simply looking to boost the power output of your daily driver, the Mopar R8450937AB Block Engine is an excellent investment for any high-performance enthusiast.

Buying a Mopar R8450937AB block engine comes with both advantages and disadvantages, depending on your specific needs, budget, and circumstances. Here are some potential pros and cons:

1. OEM Quality: This engine block is an Original Equipment Manufacturer (OEM) part, which means it is manufactured by Chrysler (FCA US LLC) to the same specifications as those used in the original vehicle.

2. Durability: The Mopar R8450937AB engine block is engineered to provide superior durability and reliability compared to aftermarket alternatives.

3. Warranty Coverage: OEM parts like this engine block often come with a warranty, providing peace of mind and protection against defects.

4. Performance: A new engine block can lead to improved engine performance and fuel efficiency, especially if the old block had any wear or damage.

5. Availability: Mopar engine blocks are widely available from authorized dealers and online retailers, making it a convenient option for those in need of a replacement.

1. Cost: OEM engine blocks can be more expensive than aftermarket alternatives, which might be a significant consideration for some buyers.

2. Installation Complexity: Installing an OEM engine block requires specialized skills and tools, which could add to the overall cost of the project.

3. Lead Time: Depending on the availability of the specific engine block, it might take some time to receive and install it, potentially causing inconvenience and downtime.

4. Potential Core Charge: Some suppliers may charge a core charge for returning the old engine block, which could add to the overall cost.

In conclusion, buying a Mopar R8450937AB engine block can be a worthwhile investment for those seeking OEM quality, durability, and warranty coverage. However, the higher cost and potential installation complexities are important considerations. If you value the peace of mind and reliability that comes with an OEM part, the benefits may outweigh the costs. However, if budget is a primary concern, an aftermarket engine block may be a more affordable alternative. Ultimately, the decision depends on your specific circumstances and priorities.

Details:

Parts must be resalable and in the original packaging. Shipping Carrier substitutions may be made at our determination in an attempt to reduce shipping cost the customer. Electrical parts are not returnable.

part #: r8450937ab prices

• $24.70-$503.49

specifications grokengines:

• for makes: Mopar
• for years: 2019-2020
• mpn: R8450937ab
• model: 2500-3500
• part type: Block Engine
• genuine oem: Yes
• manufacturer warranty: 1 Year
• fitment type: Direct Replacement
• make: Ram
• year: 2019 2020
• parts included: Only Part Reference 3 On The Diagram Is Included
• replaces part number: R8450937aa

shipping grokengines:

• class: Freight
• cost: $236.00
• type: Fixed
• service: Flat Rate Freight

general grokengines:

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

seller grokengines:

• rating: 94.6%
• city: Garden City, Kansas
• # reviews: 627

payments grokengines:

• other
• wallet: Paypal
• credit card: Diners-club

offer grokengines:

• availability: In Stock
• options: Ship-to-home
• sold: 0
• started: April 22, 2026
• quantity: 1

returns grokengines:

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

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