Sealed Power 7139M Engine Crankshaft Main Bearing Set

Overview of Sealed Power 7139M Main Bearing Set

The Sealed Power 7139M engine crankshaft main bearing set is designed for reliable performance in Nissan vehicles including the 200SX, 510, 720, D21, and Pathfinder models. This full set features steel backed overplated bronze alloy bearings in a standard size to ensure proper fit and durability.

• Full set package for complete main bearing replacement
• Steel backed overplated bronze alloy material for enhanced wear resistance
• Standard size bearings for precise fitment
• Compatible with Nissan 200SX, 510, 720, D21, and Pathfinder
• Part number 7139M for accurate identification

Product Details and Material Specifications

The 7139M main bearing set from Sealed Power is constructed with steel backed overplated bronze alloy, a material combination that provides a balance of strength and corrosion resistance. The steel backing offers structural support while the bronze alloy surface reduces friction and wear on the crankshaft journals. These bearings are manufactured to standard size specifications, ensuring they meet OEM tolerances for Nissan engines. This makes the set suitable for engine rebuilds or repairs requiring main bearing replacement in the specified Nissan models.

Compatible Nissan Models and Applications

This main bearing set is compatible with a range of Nissan vehicles, including the 200SX, 510, 720, D21, and Pathfinder. It is intended for use in engine rebuilds or maintenance where the crankshaft main bearings need replacement due to wear or damage. Using the correct part number 7139M ensures proper fit and function within these Nissan engines.

• Addresses crankshaft bearing wear and scoring
• Resolves engine knocking related to main bearing failure
• Prevents oil pressure loss caused by bearing clearance issues
• Corrects vibration problems linked to bearing degradation
• Supports engine longevity by maintaining proper crankshaft alignment

Installation Notes and Tips

When installing the Sealed Power 7139M main bearing set, ensure the engine block and crankshaft journals are thoroughly cleaned and inspected for damage. Verify that the bearings are installed in the correct orientation and that clearances are checked with plastigage or a micrometer to meet Nissan specifications. Proper lubrication during installation is critical to prevent initial wear. Follow the vehicle manufacturer’s torque specifications for main bearing caps to avoid distortion.

Quality Assurance and Warranty Information

Sealed Power manufactures the 7139M main bearing set to meet industry standards for durability and performance. The steel backed overplated bronze alloy construction undergoes quality control inspections to ensure consistency and reliability. This product is backed by Sealed Power’s warranty against manufacturing defects, providing assurance for professional engine rebuilders and technicians.