GM 55490521 Upper Crankshaft Bearing

( Brand: Gm ), ( Part Type: Bearing Crankshaft ), ( Manufacturer Part Number: 55490521 ), ( Genuine Oem: Yes ), ( Manufacturer Warranty: 1 Year ), ( Fitment Type: Direct Replacement ), ( Make: Cadillac ), ( Year: 2021 2022 2023 ), ( Parts Included: Only Part Reference 25 On The Diagram Is Included )

Review GM Genuine Crankshaft Upper Bearing fits 2021–2023

The GM 55490521 crankshaft upper bearing is a crucial component in the engine's rotating assembly. It is designed to provide a smooth and efficient transfer of power from the crankshaft to the engine's cylinder heads. This bearing is specifically engineered for use in select General Motors applications, ensuring optimal performance and fitment.

The crankshaft upper bearing is manufactured using high-quality bearing steel, which is known for its exceptional strength and durability. The steel undergoes a thorough heat-treatment process to enhance its properties, resulting in a bearing that can effectively withstand the heavy loads and pressures generated during engine operation.

The bearing's outer diameter is engineered to perfectly fit the crankshaft housing, ensuring a secure and snug fit. The inner diameter is designed to accommodate the crankshaft journal, allowing for minimal clearance and reducing the potential for unwanted lateral movement. This precise fitment helps to minimize friction and wear, contributing to the overall efficiency and longevity of the engine.

The GM 55490521 crankshaft upper bearing also features a spherical roller design, which allows for multiple rollers to contact the journal at various points, distributing the load evenly across the width of the bearing. This design reduces the pressure on any one point, reducing the likelihood of premature wear and failure.

The bearing comes complete with an integral oil seal, which helps to prevent engine oil from leaking out of the crankshaft housing. This seal ensures that the bearing remains properly lubricated throughout its entire service life, reducing the risk of wear and potential engine damage.

In summary, the GM 55490521 crankshaft upper bearing is a vital component in the engine's powertrain. Its precise fitment, high-quality materials, and spherical roller design make it an effective and efficient solution for reducing friction and wear, contributing to the overall performance and longevity of the engine.

Buying a GM 55490521 crankshaft upper bearing involves considering several factors, including cost, performance, and compatibility. Here are some pros and cons to help you make an informed decision:

1. OEM (Original Equipment Manufacturer) part: This bearing is a direct replacement for the original part, ensuring a perfect fit and reliable performance.

2. High-quality construction: As an OEM part, it is engineered and manufactured to meet GM's stringent standards, ensuring durability and longevity.

3. Improved engine performance: A worn-out crankshaft upper bearing can cause engine vibrations and noise. Replacing it with a new one can lead to a smoother and quieter engine operation.

4. Peace of mind: Using an OEM part can provide peace of mind, knowing that you are using a part specifically designed for your vehicle by the manufacturer.

1. Cost: OEM parts, including crankshaft upper bearings, can be more expensive than aftermarket alternatives.

2. Availability: Depending on your location and the specific GM model, the availability of the OEM part may be limited, requiring you to order it online or from a dealership.

3. Installation complexity: Installing an OEM crankshaft upper bearing may require specialized tools and knowledge, potentially adding to the overall cost and time.

In conclusion, purchasing a GM 55490521 crankshaft upper bearing offers several advantages, including a perfect fit, high-quality construction, improved engine performance, and peace of mind. However, it also comes with some disadvantages, such as cost, availability, and installation complexity. Ultimately, the decision to buy an OEM crankshaft upper bearing depends on your priorities, budget, and availability of alternative options. If you value the reliability and performance offered by an OEM part, the additional cost may be worth it. If you're on a tight budget or prefer the convenience of installing an aftermarket part yourself, you may want to consider alternative options.

If you prioritize a perfect fit, high-quality construction, and improved engine performance, I would recommend purchasing the GM 55490521 crankshaft upper bearing as a replacement for your worn-out bearing. If you're looking for a more cost-effective solution or prefer the convenience of installing the part yourself, consider researching and comparing aftermarket alternatives. Regardless of your choice, ensure that you follow the proper installation procedures to ensure a successful repair.

Details:

Changed My Mind. Found a Better Price. Just Didn't Like it.

part #: 55490521 prices

• $23.60-$28.04

specifications engibearing:

• for years: 2021-2023
• brand: Gm
• part type: Bearing Crankshaft
• manufacturer part number: 55490521
• genuine oem: Yes
• manufacturer warranty: 1 Year
• fitment type: Direct Replacement
• make: Cadillac
• year: 2021 2022 2023
• parts included: Only Part Reference 25 On The Diagram Is Included

shipping engibearing:

• transit: 5-13 Days
• class: Standard
• carrier: FedEx
• cost: $0.00
• type: Fixed
• service: FedEx Ground / FedEx Home Delivery

returns engibearing:

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

seller engibearing:

• # reviews: 19732
• rating: 96.0%
• city: Garland, Texas

payments engibearing:

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

offer engibearing:

• availability: In Stock
• started: August 21, 2025
• sold: 0
• options: Ship-to-home
• quantity: 4

general engibearing:

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

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