DJ Rock MB616 Engine Crankshaft Main Bearing Set

Engine Crankshaft Main Bearing Set

This crankshaft main bearing set is built for engine rebuild and repair work where crankshaft support and oil clearance are critical. It is a premium-grade replacement for a range of Nissan, INFINITI, and Mercury applications, including Nissan Frontier, Nissan Pathfinder, and INFINITI QX4 coverage.

Key Features

• Premium-grade crankshaft main bearing set for engine bottom-end service.
• Precision-engineered to support crankshaft rotation under load.
• Constructed to meet or exceed OEM quality standards.
• Bi-metal or tri-metal bearing construction for strength and wear resistance.
• Designed to maintain proper oil clearance for engine lubrication.

Detailed Description

DJ Rock MB616 is an engine crankshaft main bearing set intended for professional engine assembly and rebuild applications. The bearing design supports the crankshaft, helps stabilize rotation, and uses layered materials such as steel backing with load-bearing intermediate alloys and a wear-resistant overlay to handle pressure and reduce friction. This part number, MB616, is used across multiple Nissan and INFINITI platforms, including Nissan Maxima, Nissan Quest, and Nissan 300ZX applications.

This part cross-references Sealed Power 7099M and other listed interchange numbers for the same application.

What It Is Used For

• Excessive crankshaft play during engine rebuilds.
• Worn or damaged main bearing surfaces.
• Loss of proper oil clearance in the crankshaft journals.
• Noise or vibration from bottom-end bearing wear.
• Restoring crankshaft support after engine teardown.

Installation Notes and Tips

Verify bearing size and engine code before installation, since main bearing applications can vary by engine family and machining condition. Clean all bearing saddles and journals thoroughly, and measure oil clearance during assembly. Confirm fitment against the vehicle listing for the exact year and model before ordering MB616.

Quality Assurance

Manufactured to meet or exceed OEM quality standards, this bearing set is built for professional-grade engine service. The premium construction and precision engineering support reliable performance in demanding engine conditions.