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JE Pistons forged eight-piston kit for 5.4 4V Modular engines, specified at an 8.5:1 compression ratio. It uses a 3.622 in bore and -30.9 cc piston volume sized for the application. Manufactured in the USA from 2618 aluminum, the pistons employ JE’s Forged Side Relief forging to cut friction and save weight. Accumulator grooves and skirt coatings where applicable boost ring sealing, reduce wear and support reliable performance.
JE Pistons 5.4 4V MODULAR 8.5:1 Set of 8 Pistons
