OHIO 648-M-20 Crankshaft Bearings Nos 235 236 3.9L L6

( Brand: Ohio ), ( Part Type: Bearing Crankshaft ), ( Manufacturer Part Number: 648-M-20 ), ( Vintage Part: Yes ), ( Country Of Origin: United States )

Review OHIO Crankshaft Main Bearings Fit Chevrolet 235 236 3.9l L6 Nos Usa fits 1948–1953

Introducing the 648-m-20 crankshaft bearings, specifically designed for Chevrolet engines manufactured between 1948 and 1953 with the 235 and 236 cubic inch (3.9 liter) L6 powertrains. These bearings are an essential component of the engine's crankshaft assembly, providing the necessary support and reducing friction between the crankshaft and engine block.

The 648-m-20 crankshaft bearings are meticulously engineered using high-quality materials that ensure superior durability and performance. Each bearing features a precision-machined, metal shell constructed of durable steel. The shell's interior is lined with a layer of premium bearing material, typically a steel or brass alloy, which minimizes wear and tear while providing excellent load-bearing capacity.

These bearings also boast an innovative design that includes an integral oil groove. This feature ensures that the bearings receive a consistent supply of lubrication, reducing the risk of friction and heat build-up, thus prolonging the life of the bearing and the engine as a whole.

The 648-m-20 crankshaft bearings come in a set of two, ensuring that both the main and rod bearings are replaced for optimal engine performance. Installing these new bearings can help improve engine reliability, reduce unwanted noise, and increase horsepower.

When it comes to fitting these bearings, you can trust their compatibility with the specified Chevrolet engines. They are precision-engineered to match the exact dimensions and specifications of the original equipment bearings, ensuring a seamless installation process.

In conclusion, the 648-m-20 crankshaft bearings are an essential upgrade for any 1948-1953 Chevrolet 235 or 236 cubic inch L6 engine. Their superior durability, excellent load-bearing capacity, and consistent lubrication ensure exceptional performance and longevity for your engine.

Crankshaft bearings are an essential component of an internal combustion engine, supporting the crankshaft and allowing it to rotate smoothly. For a 1948-1953 Chevrolet with a 235 or 236 cubic inch (3.9L) L6 engine, you may need to replace the crankshaft bearings. In this context, we will discuss the pros and cons of buying aftermarket 648-m crankshaft bearings for this specific application.

1. Cost-effective: Aftermarket bearings are generally more affordable than OEM (Original Equipment Manufacturer) bearings, making them a budget-friendly option for many classic car owners.

2. Availability: Aftermarket bearings are often more widely available than OEM bearings, especially for older models like the 1948-1953 Chevrolet.

3. Customization: Aftermarket bearings may offer various options such as different materials or sizes, allowing you to choose the best fit for your specific engine and operating conditions.

1. Quality concerns: Aftermarket bearings may not meet the same quality standards as OEM bearings, potentially leading to premature failure or decreased performance.

2. Compatibility issues: Aftermarket bearings may not be an exact match to the OEM bearings, which could result in clearance issues or other compatibility problems.

3. Warranty: Aftermarket bearings usually do not come with the same level of warranty coverage as OEM bearings, which could leave you without support if the bearings fail prematurely.

When considering the purchase of aftermarket 648-m crankshaft bearings for a 1948-1953 Chevrolet 235 or 236 cubic inch L6 engine, it is essential to carefully weigh the pros and cons. Aftermarket bearings offer cost savings, availability, and customization, but they may come with potential quality concerns, compatibility issues, and lack of warranty coverage. Ultimately, the decision comes down to your budget, engine requirements, and personal preferences. If you are looking for a cost-effective solution and are confident in your ability to properly install and maintain the bearings, aftermarket bearings could be the way to go. However, if you prioritize peace of mind and want the assurance of OEM quality, you may be willing to pay more for genuine Chevrolet crankshaft bearings.

Details:

One bearing has a few nicks around the edge that will need to be filed minimally.

part #: 648m20 price

• $219.99

specifications engibearing:

• for makes: Chevrolet
• for years: 1948-1953
• brand: Ohio
• part type: Bearing Crankshaft
• manufacturer part number: 648-M-20
• vintage part: Yes
• country of origin: United States

seller engibearing:

• # reviews: 1570
• city: Leitchfield, Kentucky
• rating: 99.7%

shipping engibearing:

• carrier: USPS
• type: Calculated
• transit: 4-9 Days
• cost: $0.00
• class: Standard
• service: USPS Ground Advantage

returns engibearing:

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

offer engibearing:

• sold: 0
• quantity: 1
• availability: In Stock
• options: Ship-to-home
• started: January 4, 2026

payments engibearing:

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

general engibearing:

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

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