Enginetech M40056-STD Premium Standard Piston Ring Set for 1965-1995 Chevy GMC Ford 3.9L-4.9L 240-300ci I6 – Complete Engine Ring Set

Description

Enginetech M40056-STD is a premium standard bore piston ring set for 1965-1995 Chevy, GMC, Ford, Oldsmobile 3.9L-4.9L 240-300ci I6 engines, sold as a complete set covering all cylinders.

Important Notes:

• Sized for standard (unmachined) cylinder bores. Verify your finished bore diameter with a precision gauge before ordering.
• File-fit and gap each ring to the manufacturer’s end-gap specification for your application before installation. Improper end gap causes blow-by or ring-end butting under heat.
• Replace piston rings as a complete set during any rebuild. One set covers all cylinders for the engine.
• Except Premium. 5/64 5/64 3/16. Deep oil ring.

Sold as a complete piston ring set – one set covers all cylinders and is required per engine.

Fitment:

• 1965-1965 Ford F-100 3.9L 240ci I6
• 1965-1965 Ford F-250 3.9L 240ci I6
• 1965-1965 Ford F-350 3.9L 240ci I6
• 1965-1965 Ford P-350 3.9L 240ci I6
• 1965-1967 Ford Galaxie 3.9L 240ci I6
• 1965-1970 Ford Country Sedan 3.9L 240ci I6
• 1965-1970 Ford Country Squire 3.9L 240ci I6
• 1965-1970 Ford Custom 3.9L 240ci I6
• 1965-1970 Ford LTD 3.9L 240ci I6
• 1965-1970 Ford Ranch Wagon 3.9L 240ci I6
• 1965-1972 Ford Country Sedan 3.9L 240ci I6
• 1965-1972 Ford Country Squire 3.9L 240ci I6
• 1965-1972 Ford Custom 3.9L 240ci I6
• 1965-1972 Ford LTD 3.9L 240ci I6
• 1965-1972 Ford Ranch Wagon 3.9L 240ci I6
• 1965-1976 Ford P-350 4.9L 300ci I6
• 1965-1983 Ford F-100 4.9L 300ci I6
• 1965-1995 Ford F-250 4.9L 300ci I6
• 1965-1995 Ford F-350 4.9L 300ci I6
• 1966-1967 Ford Bronco 3.9L 240ci I6
• 1966-1972 Ford P-350 3.9L 240ci I6
• 1966-1974 Ford F-100 3.9L 240ci I6
• 1966-1974 Ford F-250 3.9L 240ci I6
• 1966-1974 Ford F-350 3.9L 240ci I6
• 1968-1970 Ford Custom 500 3.9L 240ci I6
• 1968-1970 Ford Galaxie 500 3.9L 240ci I6
• 1968-1972 Ford Custom 500 3.9L 240ci I6
• 1968-1972 Ford Galaxie 500 3.9L 240ci I6
• 1968-1973 Ford P-100 3.9L 240ci I6
• 1969-1974 Ford E-100 Econoline 3.9L 240ci I6
• …and 96 additional applications

Enginetech piston ring sets are manufactured to OEM specifications and offered in both premium and cast grades to match the demands of stock rebuilds and moderate-performance builds. Each set is application-specific, with ring widths and end-gap characteristics matched to the bore and groove geometry of the engine family it serves. Ring sets are sold by bore size – standard for unmachined bores, with oversizes for blocks that have been bored and honed – so verify your finished bore diameter with a precision gauge before ordering, since rings sized for the wrong bore will not seal correctly. Always file-fit and gap each ring to the manufacturer’s specification for your application, and replace rings as a complete set during any rebuild. Enginetech documents every set with the ring stack dimensions, bore size, and cross-references so the correct set reaches the bench the first time.

WARNING: This product can expose you to chemicals including lead and nickel, which are known to the State of California to cause cancer, birth defects, or other reproductive harm.