NPR SWT20072-4 Piston Ring Set for Ford 4.0L Cologne V6 101.40mm Oversize

The NPR SWT20072-4 is a premium piston ring set engineered for Ford 4.0L Cologne V6 engines in both OHV and SOHC configurations. Manufactured by NPR (Nippon Piston Ring Co., Ltd.), a leader in piston ring technology since 1973, this set delivers exceptional sealing performance and durability for engine rebuilds.

Key Features:

• Complete ring set for 6 cylinders (one full engine)
• 101.40mm bore diameter (oversize application)
• Precision-engineered for Ford 4.0L Cologne V6 engines
• Includes 1st (top) compression ring, 2nd compression ring, and oil control ring for each cylinder
• High-quality steel construction with advanced surface treatments
• Chrome plating on ring facings for enhanced wear resistance
• Manufactured to JIS (Japanese Industrial Standard) B8032-6-1998 specifications

NPR piston rings feature advanced materials including high-alloy steel for superior strength, reduced friction, and extended service life. The compression rings provide excellent cylinder sealing to control blow-by and improve combustion efficiency, while the oil control rings maintain proper lubrication and reduce oil consumption. Each ring set is designed to conform to cylinder bores for optimal performance in high-temperature, high-compression environments.

Alternate Part Numbers: SWT20072ZZ

This ring set is ideal for complete engine rebuilds, providing OE-quality performance at an aftermarket value. NPR's reputation for precision manufacturing ensures proper fitment and long-lasting reliability.