23931-88 HARLEY-DAVIDSON Engine Cylinder Block Crankshaft

Review HARLEY-DAVIDSON Oem Engine Cylinder Block Crankshaft Lower Bearing for SPORTSTER 1991

The Harley-Davidson 23931-88 91 Sportster Engine Cylinder Block Crankshaft Lower Bearing is an essential component in the powertrain of Harley-Davidson's iconic Sportster motorcycles. This high-quality bearing is meticulously engineered to ensure optimal performance, durability, and reliability.

The crankshaft lower bearing is designed to support the crankshaft, which is responsible for transmitting power from the engine to the transmission. It is installed between the engine block and the crankshaft, forming a critical part of the engine's rotating assembly. The bearing is made from premium materials, including high-carbon steel and advanced bearing materials, that provide excellent load-carrying capacity and resistance to wear.

The Harley-Davidson 23931-88 91 Sportster Engine Cylinder Block Crankshaft Lower Bearing features a precision-machined surface finish that ensures a perfect fit in the engine and a smooth, efficient operation of the crankshaft. It is also designed to accommodate the use of Harley-Davidson's proprietary Rod Bearings, which help to minimize friction and improve power delivery.

This bearing is specifically engineered for use in the Harley-Davidson Sportster 91 engine, which is known for its agility, responsiveness, and versatility. It is suitable for both air-cooled and liquid-cooled versions of the Sportster engine and is recommended for use as a replacement or upgrade in older or high-mileage engines.

Installing the Harley-Davidson 23931-88 91 Sportster Engine Cylinder Block Crankshaft Lower Bearing is a straightforward process, but it is essential to follow the manufacturer's instructions carefully to ensure proper alignment and installation. Proper installation will help to ensure the longevity and performance of the engine.

In summary, the Harley-Davidson 23931-88 91 Sportster Engine Cylinder Block Crankshaft Lower Bearing is an essential component in the powertrain of Harley-Davidson's Sportster motorcycles. It is meticulously engineered to provide optimal performance, durability, and reliability, and is specifically designed for use in the Harley-Davidson Sportster 91 engine. With its precision-machined surface finish, advanced materials, and easy installation process, this bearing is an excellent choice for Harley-Davidson Sportster owners looking to maintain or upgrade their engines.

Pros and Cons of Buying Harley-Davidson Sportster Engine Cylinder Block and Crankshaft Lower Bearing (Model: 23931-88)

The Harley-Davidson Sportster engine is known for its unique design and iconic sound. However, like any internal combustion engine, it requires regular maintenance and periodic replacement of worn-out parts. One such component is the cylinder block and crankshaft lower bearing. In this article, we will discuss the pros and cons of buying this specific part from Harley-Davidson, model number 23931-88.

1. OEM Quality: By purchasing this part directly from Harley-Davidson, you can ensure that you are getting an original equipment manufacturer (OEM) part, which is designed to meet the exact specifications of your engine.

2. Proven Durability: Harley-Davidson has a reputation for producing high-quality components that can withstand the rigors of regular use. This part is no exception.

3. Easy Installation: The cylinder block and crankshaft lower bearing are essential components of the engine and require precise installation. Buying an OEM part ensures that the installation process will be smooth and hassle-free.

1. Cost: OEM parts, especially from a reputable manufacturer like Harley-Davidson, can be more expensive than aftermarket alternatives. The price of this part may be a deterrent for some buyers.

2. Limited Availability: Harley-Davidson parts may not be readily available at all dealerships or retailers. This could result in a longer wait time for the part, which could impact your riding plans.

3. No Performance Upgrades: This part is a replacement for a worn-out bearing and does not offer any performance upgrades. If you are looking to enhance the performance of your Sportster engine, you may need to consider other aftermarket parts.

The decision to buy the Harley-Davidson Sportster Engine Cylinder Block and Crankshaft Lower Bearing (Model: 23931-88) ultimately depends on your priorities as a Harley-Davidson owner. If you value OEM quality, proven durability, and easy installation, this part is an excellent choice. However, if cost and availability are your primary concerns, you may want to consider aftermarket alternatives.

If you are looking for a high-quality, reliable replacement part for your Harley-Davidson Sportster engine cylinder block and crankshaft lower bearing, the OEM part from Harley-Davidson is an excellent choice. The investment in this part will ensure the continued performance and longevity of your engine. However, it is essential to weigh the pros and cons carefully and consider your budget and availability constraints before making a purchase.

Details:

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The pictures do it no justice. Excellent communication. All parts are tested and inspected for reliability performance. Wide range of parts.

We help riders builders find quality Harley parts high quality premium service engine cylinder block crankshaft lower bearing, 23931-88, 1991, Harley-davidson, Sportster. Better than described. The price was very fair. Engine v-twin evolution, carburetors.

Was shipped and arrived in a decent time. Key features: item details: tag number 9220, year/year range 1991 -2003, make Harley-davidson, model Sportster, sub model, series. The price was good for the condition of item. Packaging was above and beyond.

Would definitely recommend buying from them and will look at their stock when in the future. He agreed on an amazing price. And a decent value for the price. Look forward to purchasing from them in the future if I need extra parts.

Get oem parts. Quality assurance. Communication was great. Was in decent quality.

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specifications engineblocksam:

• for models: Sportster
• for years: 1991
• brand: Harley-davidson
• mpn: 23931-88
• country of origin: United States
• type: Engine Cylinder Block Crankshaft Lower Bearing
• material: Steel
• manufacturer warranty: 1 Month
• performance part: No

general engineblocksam:

• category: Auto Parts > Car Truck Accessories > Engines > Blocks

shipping engineblocksam:

• type: fixed
• transit: 4-8 days
• class: standard
• service: standard

seller engineblocksam:

• rating: 99.5%
• city: euclid, ohio
• # reviews: 6986

returns engineblocksam:

• paid by: seller
• policy: returns accepted
• time: 30 days

offer engineblocksam:

• options: ship-to-home
• started: november 28, 2025
• availability: in stock
• sold #: 13
• best offers: true
• prices: $148.98–$360.00
• item condition:
  • Used
  • For parts or not working
• in stock #: 5

payments engineblocksam:

• other
• credit card: visa
• wallet: paypal