Piston Ring Set 4.040 Gapls 2nd 1/16 1/16 3/16

The Piston Ring Set 4.040 Gapless 2nd 1/16 1/16 3/16 from TOTAL SEAL represents purpose-built engine internals for high-performance and heavy-duty applications where precision ring fit directly impacts combustion efficiency and longevity. Engineered for users who demand reliable compression retention and minimal blowby—including engine builders, law enforcement fleet maintenance, military vehicle operations, and motorsports enthusiasts—this ring set addresses the critical gap between stock components and extreme-duty demands. TOTAL SEAL's reputation for precision manufacturing makes this piston ring set a trusted choice when engine reliability cannot be compromised.

This piston ring set is sized for 4.040-inch bore diameter and features a gapless (or nearly gapless) top ring design—a proven technology that maximizes seal integrity by eliminating end-gap leakage, a key source of pressure loss in standard ring configurations. The second ring gap specification of 1/16 inch and the oil-control ring gap of 3/16 inch are precision-engineered to maintain optimal tension and clearance across operating temperature ranges. TOTAL SEAL rings are manufactured from high-strength cast iron alloys with controlled porosity, ensuring durability under sustained high-RPM operation and severe duty cycles common to military vehicles, law enforcement interceptors, and custom-built engines.

Professionals responsible for engine overhaul or performance rebuild—whether rebuilding duty fleet engines or high-output custom platforms—benefit most from this precision ring set's ability to restore or exceed OEM compression and reduce fuel consumption through superior sealing. Installation requires proper ring gap verification and honing of the cylinder bore to TOTAL SEAL's specifications; precision fitment is essential to realize the ring set's compression and longevity advantages. Compatible with any engine platform featuring a 4.040-inch bore, this ring set is ideal for domestic V8s, heavy-truck applications, and performance-modified engines where reliability and consistent performance are non-negotiable.