JE Pistons PORSCHE 3.8L DM KIT Set of 6 Pistons

If you're rebuilding the engine in your 2004 Porsche 911 for serious performance, a set of high-quality forged pistons is a critical component. These JE Pistons are built to handle the demands of a high-performance 3.8L engine, offering a significant upgrade over stock cast pistons. They are designed to provide the durability and power you need for track use or spirited driving.

JE Pistons has been a leader in forged piston technology for over 75 years, and this kit reflects that experience. Forged in the USA from 2618 aluminum, these pistons offer high tensile strength necessary for demanding applications. They feature JE's proprietary Forged Side Relief (FSR) design, which helps minimize friction and reduce weight by using a shorter wrist pin and reduced skirt width. Depending on the specific application, these pistons may also include an accumulator groove to improve ring seal and reduce combustion gas pressure, as well as a skirt coating to further reduce friction and wear while quieting operation. This kit comes complete with high-quality wrist pins, locks, and JE Pro Seal premium piston rings, ensuring you have everything needed for a proper installation.

This set is designed specifically for the 3.8L Porsche 911 engine, with a 4.016-inch bore and a dome piston design intended to achieve an 11.50:1 compression ratio. Please note that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for detailed guidance.