Total Seal CS3690GP-45 Classic Steel Gas Ported Piston Ring Set 4.045" Bore

The Total Seal CS3690GP-45 Classic Steel Gas Ported Piston Ring Set is engineered for high-performance engines requiring superior cylinder sealing and reduced blow-by. Designed for a 4.045-inch bore diameter, this 8-cylinder ring set features advanced gas porting technology that harnesses combustion pressure to improve ring seal and engine efficiency.

Gas Ported Technology:

Gas ported rings feature strategically sized and placed horizontal slots machined into the top ring surface. These ports allow combustion gases to enter behind the ring, creating a gas-loading effect that forces the ring outward against the cylinder wall. This revolutionary approach uses cylinder pressure to improve sealing rather than fighting against it with increased ring tension.

Key Features:

• 4.045-inch bore size for precision fitment
• Gas ported top ring for enhanced sealing performance
• Ring dimensions: 1/16" top ring, 1/16" second ring, 3/16" oil ring
• Standard tension design for reliable operation
• 8-cylinder set (complete engine kit)
• File-fit rings for custom end gap adjustment
• Steel construction for durability

Performance Benefits:

• Exceptional cylinder sealing reduces blow-by
• Cleaner engine oil and extended oil life
• Cooler operating temperatures
• Improved compression and power output
• Self-cleaning gas ports stay cleaner longer than gas-ported pistons
• Stronger piston top ring land compared to piston porting

Ideal for street performance and racing applications, the CS3690GP-45 ring set delivers the proven sealing technology trusted by professional engine builders in drag racing, circle track, and road racing. The gas ported design provides superior ring-to-wall sealing while maintaining optimal ring tension for maximum efficiency and durability.