2003-4040 4.3 Chevy V6 FX Series -13cc Dish Top V6 23 Degree Forged Piston Set 4.040 inch bore Pin Dia.: 0.927" Comp Height: 1.56" Piston Series Option:FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs 0 mm Gas Nitride Stainless

0 mm Gas Nitride Stainless Steel Top Ring - Napier Second Ring with Flex Vent Oil Control Rings

Do not indicate the piston skirt diameter

With today's power levels leaving wall thickness in the cylinders can also help with power and longevity

It is very common to order a single piston to replace an obviously damaged piston only to find out you need a few more

2003-4040 4.3 Chevy V6 FX Series -13cc Dish Top V6 23 Degree Forged Piston Set 4.040 inch bore Pin Dia.: 0.927" Comp Height: 1.56" Piston Series Option:FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs 0 mm Gas Nitride Stainless268 Chevy V6, FX, Comp Height: 1. 56, 13cc Dish Top, PIN: . 927", Full Floating or Press Fit, Ring Groove: 1. 2 1. 2 3MM, Stroke: 3. 480", ROD: 5. 7, Approx Comp Ratio: 58cc 10. 21, 64cc 9. 57, 70cc 9 *