DJ Rock P645 Engine Piston Set

Engine Piston Set for Nissan and INFINITI

DJ Rock P645 is a premium engine piston set for complete engine service in select Nissan and INFINITI applications. Built around a 95.5 mm bore diameter and 1.2 x 1.2 x 2.5 ring sizing, it is engineered to restore combustion sealing, compression control, and smooth piston-to-cylinder operation.

Compatible With 2002-2008 Nissan Maxima, 2002-2006 Nissan Altima, 2003-2006 Nissan 350Z, 2003-2007 Nissan Murano, 2004-2009 Nissan Quest, 2003-2007 INFINITI G35, 2003-2008 INFINITI FX35, 2006-2008 INFINITI M35, and 2002-2004 INFINITI I35.

Key Features

• Premium-grade engine piston set for complete engine service
• 95.5 mm bore diameter for the listed applications
• Ring sizing: 1.2 mm top compression, 1.2 mm second compression, 2.5 mm oil ring
• Precision-engineered to transfer combustion force to the crankshaft
• Supports combustion chamber sealing, oil control, and heat dissipation
• Built with hardened wrist pins and retainers when required by the application

Detailed Description

DJ Rock P645 is built for engine rebuild work where piston fit, ring sealing, and thermal stability matter. The piston design helps maintain compression in the cylinder, regulate oil consumption, and move heat into the cylinder walls during operation. This makes it a direct-fit service part for engines used in the Nissan Maxima, Altima, 350Z, Murano, Quest, and INFINITI G35, FX35, M35, and I35.

The P645 part number is a practical match for technicians and DIY rebuilders looking for a piston set with the correct bore and ring dimensions for these VQ-series applications. If you are sourcing DJ Rock P645 for a Nissan Murano piston replacement or an INFINITI G35 engine rebuild, verify engine code, bore size, and ring specifications before assembly.

This part cross-references common engine rebuild references such as DNJ Engine Components P645 for the same application.

What It Helps Fix

• Low compression caused by worn or damaged pistons
• Excess oil consumption from poor ring sealing
• Combustion blow-by and crankcase pressure buildup
• Piston slap, scoring, or wear from high-mileage engine operation
• Heat transfer issues related to worn internal engine components

Installation Notes and Tips

Measure cylinder bore, piston-to-wall clearance, and ring end gap before assembly. Confirm the engine code and compare the 95.5 mm bore diameter and 1.2 x 1.2 x 2.5 ring sizing against the original components. Clean the cylinder walls thoroughly, inspect the connecting rods and bearings, and follow factory torque and break-in procedures during installation.

Quality Assurance

DJ Rock P645 is a premium engine piston set manufactured to meet or exceed OEM quality standards. It uses high-quality aluminum alloy construction with hardened steel wrist pins for strength, heat management, and long-term service in the listed Nissan and INFINITI applications.