DJ Rock MB973 Engine Crankshaft Main Bearing Set

Engine Main Bearing Set for Lexus V8 Applications

DJ Rock MB973 is a premium crankshaft main bearing set for select Lexus V8 engines. It is built for the 2001-2007 Lexus GS430, 2001-2006 Lexus LS430, and 2002-2010 Lexus SC430, with precision sizing for stable crankshaft support and consistent oil clearance.

• Premium-grade crankshaft main bearing set
• Precision-engineered for smooth crankshaft rotation under load
• Upper and lower bearing shells for complete main bearing service
• Built with layered bearing materials for strength, load capacity, and wear resistance
• Fits 2001-2007 Lexus GS430, N/A
• Fits 2001-2006 Lexus LS430, N/A
• Fits 2002-2010 Lexus SC430, N/A

Detailed Product Overview

MB973 is a DJ Rock engine crankshaft main bearing set made for Lexus GS430, LS430, and SC430 applications. The bearing construction uses a steel-backed layered design with load-bearing intermediate material and a wear-resistant overlay to help maintain oil film integrity and reduce friction at the crankshaft journals. This part number, MB973, is specified for engines that require accurate main bearing clearance and dependable crankshaft support during normal and high-load operation.

This part cross-references no listed alternate part numbers in the provided data.

Common Repair Uses

• Restoring proper crankshaft support after bearing wear
• Addressing low oil pressure caused by excessive main bearing clearance
• Repairing engine noise related to worn crankshaft main bearings
• Rebuilding a Lexus GS430, LS430, or SC430 engine with new main bearings

Installation Notes

Verify crankshaft journal condition, bearing clearance, and oil passage cleanliness before assembly. Measure clearances during installation and follow the engine builder’s service specifications for torque, lubrication, and sequence. MB973 should be installed only in the confirmed Lexus GS430, LS430, or SC430 applications listed above.

Quality Assurance

DJ Rock lists MB973 as a premium-grade bearing set and states that its crankshaft main bearing components are manufactured to meet or exceed OEM quality standards for professional engine service.