Sealed Power 2785PN Engine Piston Cast Aluminum, Bowl Head, 103mm Bore

The Sealed Power 2785PN is a premium cast aluminum engine piston engineered to restore performance in high-demand applications. Featuring a bowl-style piston head, this piston is manufactured to precise dimensional specifications — including a 103.00 mm cylinder bore diameter, 49.60 mm compression height, and a 34.50 mm piston pin outside diameter — to ensure proper fit and reliable sealing. Ring groove dimensions include a 3.00 mm top compression ring, 2.00 mm second compression ring, and 3.00 mm oil ring, supporting effective combustion and oil control.

Key Features:

• Premium-grade cast aluminum construction for durability and thermal efficiency
• Bowl-style piston head design
• Cylinder bore diameter: 103.00 mm (standard, non-oversized)
• Piston pin outside diameter: 34.50 mm
• Compression height: 49.60 mm
• Top compression ring groove: 3.00 mm | Second compression ring groove: 2.00 mm | Oil ring groove: 3.00 mm
• Application-specific design for precise fitment

Sealed Power has been a trusted name among engine professionals for generations, delivering components built to meet the demands of modern engines. This piston is designed to help get performance back to factory standards the first time. Fits select 2011–2016 GMC and Chevrolet models.