Mahle 42239CP Engine Piston Ring Set

Engine Piston Ring Set for Nissan and INFINITI Vehicles

The Mahle 42239CP engine piston ring set is designed for precise fitment and reliable performance in select Nissan and INFINITI models. Engineered with premium materials, this piston ring set supports optimal engine compression and oil control for vehicles like the Nissan Altima and INFINITI G35.

• Bore diameter: 3.7598 inches for exact cylinder fit
• Premium grade construction for durability
• Chrome coating on piston ring face for wear resistance
• Stainless steel oil ring assembly with 0.0984 inch axial height
• Cast iron second ring with 0.0470 inch thickness
• Carbon steel top ring with 0.0470 inch thickness
• Standard piston ring oversize with shallow groove design

Technical Details and Material Composition

The Mahle 42239CP piston ring set features a combination of materials selected for their specific roles in engine performance. The top ring is made from carbon steel, providing strength and heat resistance, while the second ring is cast iron, which aids in sealing and durability. The oil ring assembly is constructed from stainless steel, ensuring corrosion resistance and effective oil control. The piston ring face is coated with chrome to reduce wear and extend service life. This set is designed with a bore diameter of 3.7598 inches and a shallow groove size, matching the specifications required for proper sealing and compression in compatible engines.

Compatible Nissan and INFINITI Models

This piston ring set is compatible with a range of Nissan and INFINITI vehicles, including:

• Nissan 350Z
• Nissan Altima
• Nissan FX35
• Nissan Maxima
• Nissan Murano
• Nissan Pathfinder
• Nissan Quest
• INFINITI G35
• INFINITI I35
• INFINITI M35
• INFINITI QX4

Common Engine Issues Addressed

• Reduced engine compression due to worn piston rings
• Excessive oil consumption from poor oil ring sealing
• Increased blow-by gases affecting engine performance
• Engine smoke caused by oil leakage past piston rings
• Loss of power and efficiency from ring wear or damage

Installation Notes and Tips

Ensure the cylinder bore is clean and free of debris before installation. Verify the bore diameter matches the 3.7598 inch specification for proper ring fit. Use appropriate ring compressors and follow manufacturer torque specifications during assembly. Avoid forcing rings into place to prevent damage. It is recommended to inspect the piston and cylinder walls for wear or damage prior to installation.

Quality Assurance and Warranty

Mahle piston rings are manufactured to meet OEM standards with strict quality control processes. The 42239CP piston ring set is constructed from premium materials to provide consistent performance and durability. While specific warranty details may vary, Mahle products typically come with a limited warranty against manufacturing defects. Consult product documentation or authorized sources for exact warranty terms.