Wiseco K473M96 Professional Series Forged Piston GM LS Bore Dish - Set 5.3L 3.780 7cc

The Wiseco K473M96 is a Professional Series forged piston set engineered for GM LS 5.3L engines running a 4.000-inch stroke.

Each piston features a -7cc dish crown with a 3.780-inch bore diameter and a 1.110-inch compression height, yielding an approximate 10.8–11.2:1 compression ratio depending on head chamber volume. The pistons are designed around a 4.000-inch stroke and are compatible with 6.098-inch or 6.125-inch connecting rods. A 0.927-inch x 2.250-inch wrist pin is required, making aftermarket or K1-style connecting rods necessary.

Key Features:

• Forged 2618 aluminum alloy construction for superior strength and resistance to heat and detonation
• 3.780-inch bore diameter with -7cc dish crown
• 1.110-inch compression height; compatible with 6.098" or 6.125" connecting rods
• 4.000-inch stroke application; approximate weight 370 grams per piston
• 0.927" x 2.250" wrist pin diameter — requires K1 or aftermarket connecting rods
• Radiused valve pockets for improved detonation resistance and airflow
• Anti-detonation grooves to keep ring grooves free of carbon buildup
• ArmorGlide™ coated skirts reduce operating friction, noise, and cylinder wear
• GFX ring set included: 1.2mm nitride steel top ring, 1.2mm Napier second ring, 3mm nitride oil ring
• Pressure groove for enhanced ring seal
• Chromoly wrist pins and Spirolox® retainers included
• Piston rings are included

The Wiseco Professional Series is engineered to handle forced induction applications including turbocharging, supercharging, and nitrous. Engineered, forged, and machined in the USA at Wiseco's facility in Mentor, Ohio, the K473M96 piston set is the ideal foundation for a serious GM LS 5.3L performance build.