Mahle 42239CP Chrome Piston Ring Set for 2001-2010 Nissan Infiniti 3.5L VQ35DE

Vehicle Fitment

• 2002-2006 Nissan Altima (3.5L V6, DOHC, VQ35DE, FWD)
• 2002-2008 Nissan Maxima (3.5L V6, DOHC, VQ35DE, FWD)
• 2003-2007 Nissan Murano (3.5L V6, DOHC, VQ35DE, FWD/AWD)
• 2001-2004 Nissan Pathfinder (3.5L V6, DOHC, VQ35DE, RWD/4WD)
• 2004-2009 Nissan Quest (3.5L V6, DOHC, VQ35DE, FWD)
• 2003-2006 Nissan 350Z (3.5L V6, DOHC, VQ35DE, RWD)
• 2002-2004 Infiniti I35 (3.5L V6, DOHC, VQ35DE, FWD)
• 2003-2007 Infiniti G35 Sedan/Coupe (3.5L V6, DOHC, VQ35DE, RWD/AWD)
• 2003-2008 Infiniti FX35 (3.5L V6, DOHC, VQ35DE, RWD/AWD)
• 2006-2008 Infiniti M35 (3.5L V6, DOHC, VQ35DE, RWD/AWD)
• 2001-2003 Infiniti QX4 (3.5L V6, DOHC, VQ35DE, 4WD)

Fitment Notes

• Fits standard (STD) bore of 3.760 in. (95.5 mm) only - measure bore before ordering
• Does not fit 2007-2008 Nissan 350Z or 2007-2008 Infiniti G35 equipped with VQ35HR engine - VQ35HR uses different bore and ring package
• Does not fit 2009+ Nissan 370Z (VQ37VHR engine)
• Sold as 6 sets (one complete set per cylinder for the V6 engine)

Features

• Chrome face coating for excellent wear resistance and extended cylinder life
• SAE 9254 high alloy steel base material for superior tensile strength and fatigue resistance
• Barrel-faced top compression ring for improved gas sealing and reduced blow-by
• CNC-controlled gap chamfer ensures consistent ring gap and immediate seating
• Reverse twist second ring for superior groove side sealing and oil control
• CP-20 three-piece oil ring assembly with 20-degree ear angle for maximum side seal
• Pre-lapped finish virtually eliminates break-in time - seats immediately on startup
• Optimized ring tension reduces friction while maintaining oil control across all driving conditions

Specifications

• Bore Size: 3.760 in. (95.5 mm) - Standard
• Engine Displacement: 3.5L (3498cc)
• Engine Configuration: V6 (6-Cylinder), DOHC
• Compatible Engine Code: VQ35DE
• Ring Coating: Chrome
• Quantity: 6 sets (1 complete set per cylinder)

Included Components

• 6x Top Compression Ring (chrome-faced)
• 6x Second Compression Ring (reverse twist)
• 6x CP-20 Oil Ring Assembly (3-piece)

Product Description

The Mahle 42239CP is a premium chrome piston ring set engineered specifically for the Nissan 3.5L VQ35DE V6 engine, one of the most widely used and well-respected engines in Nissan and Infiniti's lineup from 2001 through 2010. Covering applications ranging from the sporty 350Z and G35 to everyday drivers like the Altima, Maxima, and Murano, this ring set restores combustion sealing, reduces oil consumption, and recovers lost compression in worn or rebuilt VQ35DE engines. Chrome face coating combined with a high alloy steel base delivers exceptional hardness and durability under the thermal and pressure demands of both street and performance use.

Each set includes a pre-lapped chrome top compression ring, a reverse twist second ring for groove-side sealing and oil management, and a CP-20 three-piece oil ring assembly with Mahle's exclusive 20-degree ear angle for superior side seal in the ring groove. The kit ships as 6 complete cylinder sets to service the full V6 engine at standard 95.5 mm bore. Always confirm bore size before ordering - this set is for standard bore only. Oversize variants are available separately for engines requiring machining.