MOPAR 1238-554 Connecting Rod Bearings Nos .001 U.s.

( Manufacturer Part Number: 1238-554 ), ( Type: Connecting Rod Bearing ), ( Vintage Part: Yes )

Review MOPAR Connecting Rod Bearings .001 Us.s. Lot Of Nos 1238 554 fits 1942–1950

The **Mopar 1238-554 Connecting Rod Bearings (Part Number 001)** are precision-engineered, high-performance bearings designed exclusively for Ford V8 engines produced between **1942 and 1950**, including models like the **Y-block, Flathead, and early overhead-valve (OHV) configurations**. These bearings are a critical component of the engine s crankshaft assembly, ensuring smooth operation, reduced friction, and optimal power transfer between the crankshaft journals and connecting rods. Crafted from **high-grade, lead-indium alloy**, these bearings are engineered to withstand the extreme pressures and heat generated during high-performance driving, making them ideal for both stock restorations and modified applications. The **split-shell design** allows for easy installation and removal, accommodating the unique bearing clearance requirements of these classic engines, while the **thin-walled construction** minimizes weight without compromising durability. Whether used in a meticulously restored **1949 Ford F-1** or a high-revving **Y-block hot rod**, these bearings deliver reliable performance, helping to extend the lifespan of the crankshaft and connecting rods while maintaining peak efficiency. Their compatibility with **1942 1950 Ford V8 engines** including the legendary **332, 352, and 392 cubic inch models** makes them a must-have replacement for mechanics and enthusiasts seeking genuine Mopar quality in their restoration or modification projects.

### **Pros and Cons of Buying Mopar 1238-554 Connecting Rod Bearings (001, U.S. Nos. 1238-554, 1942 1950)**

1. **OEM Quality and Fit** These bearings are genuine Mopar parts, designed specifically for Ford V8 engines from 1942 1950. They match the original specifications, ensuring proper fit and function without modification.

2. **Reliability and Durability** Mopar parts are known for their robustness, especially in high-performance or restored engines. High-quality bearings reduce the risk of catastrophic failure, such as rod knock, which can destroy an engine.

3. **Compatibility with Aftermarket Upgrades** Since these bearings are OEM, they work well with aftermarket components like forged crankshafts, pistons, or performance camshafts, making them a solid choice for modified engines.

4. **Ease of Installation** Being original equipment, they require no special machining or adjustments beyond standard bearing installation procedures. This makes them accessible for DIY mechanics.

5. **Long-Term Engine Protection** Properly installed rod bearings reduce friction, heat, and wear on the crankshaft and connecting rods, extending the engine s lifespan, especially in high-mileage or restored vehicles.

6. **Availability of Supporting Parts** Since these are classic Mopar parts, related components like oil pumps, seals, and gaskets are often available, simplifying rebuilds.

7. **Trust in Brand Reputation** Mopar has a long-standing reputation for quality in automotive parts, particularly for classic and muscle cars, which can be reassuring for buyers.

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1. **Cost** Genuine Mopar bearings are more expensive than aftermarket alternatives. For a set of rod bearings, prices can range from $50 to $150 or more, depending on availability and condition.

2. **Limited Availability** These bearings may not be as widely stocked as newer or more common parts. Buyers may need to order from specialty suppliers, eBay, or salvage yards, which could delay repairs.

3. **Potential for Counterfeit or Used Parts** Since these are older parts, there is a risk of purchasing counterfeit or previously used bearings. Buyers should verify authenticity (e.g., through Mopar dealerships or reputable sellers) to avoid poor-quality or damaged components.

4. **Specialized Tools May Be Required** While not always necessary, some installations (especially in tight engine bays) may require specialized tools like bearing drivers or torque wrenches calibrated for precise settings.

5. **Mismatch with Modern Engine Modifications** If the engine has been heavily modified (e.g., with oversized pistons or a stroker crank), the original rod bearings may not be suitable without additional machining or custom bearings.

6. **Warranty Limitations** Genuine Mopar parts typically come with limited warranties (e.g., 12 24 months), whereas some aftermarket brands offer longer warranties or better return policies.

7. **Environmental and Ethical Concerns** If purchasing from a salvage yard, there may be concerns about the source of the parts (e.g., salvaged from wrecked engines), though this is less of an issue with new OEM parts.

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Mopar 1238-554 connecting rod bearings are an excellent choice for restoring or maintaining a 1942 1950 Ford V8 engine, especially if you prioritize OEM quality, reliability, and compatibility with classic engine builds. Their durability and fit make them ideal for high-performance or restored applications, though the higher cost and potential availability issues must be considered.

If budget is a concern, aftermarket bearings from reputable brands (e.g., Fel-Pro, Clevite, or Scintilla) can offer comparable performance at a lower price, provided they meet or exceed OEM specifications. However, for purists or those restoring a vehicle to factory specifications, the Mopar bearings are the safest and most authentic option.

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- You are restoring a 1942 1950 Ford V8 to stock or near-stock condition.

- You prioritize OEM quality and long-term reliability over cost savings.

- You have access to a reputable supplier (e.g., Mopar dealership, specialty auto parts store, or trusted online seller).

- Your engine is not heavily modified (e.g., no oversized components).

- You are on a tight budget and can verify that the aftermarket bearings meet or exceed OEM standards (e.g., Clevite 77 or Fel-Pro 7700).

- Your engine has been modified with components that require custom bearings (consult a mechanic or engine builder).

- You can find a verified used set from a trusted source at a significant discount.

- Always inspect bearings for cracks, corrosion, or wear before installation.

- Use a torque wrench to tighten rod bolts to the manufacturer s specifications (typically 60 70 ft-lbs for these engines).

- Consider replacing related components (e.g., oil pump, seals) during the rebuild for optimal longevity.

- If purchasing online, check seller ratings and return policies to avoid counterfeit or damaged parts.

Details:

Mopar Connecting Rod Bearings .001 USA Lot Of 3 NOS 1238 554 1942-1950, See picture for full years/make/ model's - 2 sealed / 1 opened, Plymouth 1942-1950 Dodge 1934-1950 Truck various 1939-1950 Industrial Engine 1940-1949, Please review the pictures they are best way you to judge condition of item. The pictures are part of the Listing.

part #: 1238554 price

• $29.95

specifications pistonrinro:

• for makes: Mopar
• for years: 1942-1950
• mpn: 1238-554
• type: Connecting Rod Bearing
• vintage part: Yes

returns pistonrinro:

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

offer pistonrinro:

• quantity: 1
• sold: 0
• started: February 16, 2026
• options: Ship-to-home
• availability: In Stock

shipping pistonrinro:

• class: Standard
• carrier: USPS
• type: Fixed
• cost: $6.75
• transit: 3-5 Days
• service: USPS Ground Advantage

general pistonrinro:

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

payments pistonrinro:

• credit card: Mastercard
• other
• wallet: Paypal

seller pistonrinro:

• # reviews: 4932
• city: Burnsville, Minnesota
• rating: 100.0%

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