Sealed Power 4979M Engine Crankshaft Main Bearing Set

Overview of Sealed Power Engine Crankshaft Main Bearing Set 4979M

The Sealed Power 4979M engine crankshaft main bearing set is designed as an OE replacement for Ford and Mercury vehicles with 2.3L OHC L4 engines through 1988. This main set provides reliable performance for models including the Ford Mustang, Ranger, and Mercury Cougar.

• Compatible with Ford and Mercury 2.3L OHC L4 engines
• OE replacement for vehicles through 1988
• Overplated copper-lead alloy material for durability
• Available in standard and undersized (.25, .50, .75, 1.00mm) sizes
• Complete main bearing set for crankshaft support

Product Details and Specifications

The Sealed Power 4979M main bearing set is manufactured from an overplated copper-lead alloy, providing a balance of strength and wear resistance essential for crankshaft support. This set is engineered specifically for Ford and Mercury 2.3L overhead cam (OHC) inline-four (L4) engines, covering a range of models such as the Ford Aerostar, Bobcat, Capri, Courier, Fairmont, LTD, Marquis, Pinto, Thunderbird, and Zephyr. The set includes multiple size options—standard, .25, .50, .75, and 1.00mm—to accommodate engine rebuilds requiring precise bearing clearances.

Applications and Problem Solving

• Restores proper crankshaft bearing clearance in worn engines
• Addresses engine knocking or excessive bearing wear
• Prevents crankshaft damage due to insufficient lubrication
• Supports engine rebuilds on Ford and Mercury 2.3L OHC L4 engines
• Helps reduce vibration and improve engine smoothness

Installation Notes and Tips

When installing the Sealed Power 4979M main bearing set, ensure the crankshaft journals are clean and free of debris. Measure journal diameters carefully to select the correct bearing size from the available standard and undersized options. Proper torque specifications should be followed to avoid bearing distortion. It is recommended to check oil clearances with plastigage or a micrometer during installation to ensure optimal fit and performance.

Quality Assurance and Warranty

Sealed Power manufactures this main bearing set to meet or exceed OEM specifications for durability and performance. The overplated copper-lead alloy construction provides reliable wear resistance under normal operating conditions. While specific warranty details may vary, Sealed Power products typically come with a limited warranty against manufacturing defects, ensuring confidence in the product's quality and longevity.