Hastings 4.25" Bore +.020" Over Size, 8-Cylinder Ring Set with 5/64" Top Ring, 5/64" Second Ring and a First Oil Ring is 3/16".
This Hastings 8-Cylinder Ring Set has a top ring manufactured from steel with plasma moly ring surface treatment, a second ring manufactured from grey iron with phosphate ring surface treatment. The 1st oil control ring is manufactured of steel rail/stainless expansion with a chrome rail ring surface treatment.

Application Summary:

Year Make/Model
1966-1975 Chevrolet Bel Air
1966-1972 Chevrolet Biscayne
1973-1974 Chevrolet Blazer
1969-1972 Chevrolet Brookwood
1975-1980 Chevrolet C10
1973-1974 Chevrolet C10 Pickup
1973-1980 Chevrolet C10 Suburban
1990 Chevrolet C1500
1975-1986 Chevrolet C20
1973-1974 Chevrolet C20 Pickup
1973-1986 Chevrolet C20 Suburban
1975-1986 Chevrolet C30
1973-1974 Chevrolet C30 Pickup
1988-1990 Chevrolet C3500
1969 Chevrolet Camaro
1966-1976 Chevrolet Caprice
1970-1973 Chevrolet Chevelle
1966-1974 Chevrolet Corvette
1971-1975 Chevrolet El Camino
1969-1970 Chevrolet Estate
1973-1974 Chevrolet G10 Van
1976 Chevrolet G20
1973-1974 Chevrolet G20 Van
1975-1976 Chevrolet G30
1988-1990 Chevrolet G30
1973-1974 Chevrolet G30 Van
1966-1976 Chevrolet Impala
1973-1974 Chevrolet K10 Pickup
1973-1974 Chevrolet K10 Suburban
1973-1974 Chevrolet K20 Pickup
1973-1974 Chevrolet K20 Suburban
1985 Chevrolet K20 Suburban
1977 Chevrolet K30
1980-1986 Chevrolet K30
1973-1974 Chevrolet K30 Pickup
1988-1990 Chevrolet K3500
1976-1978 Chevrolet K5 Blazer
1969-1972 Chevrolet Kingswood
1973-1975 Chevrolet Laguna
1973-1975 Chevrolet Malibu
1970-1975 Chevrolet Monte Carlo
1970-1971 Chevrolet Nova
1973 Chevrolet P10 Van
1976 Chevrolet P20
1979 Chevrolet P20
1970-1971 Chevrolet P20 Van
1973 Chevrolet P20 Van
1975-1990 Chevrolet P30
1970-1971 Chevrolet P30 Van
1973-1974 Chevrolet P30 Van
1987-1988 Chevrolet R20
1987-1988 Chevrolet R20 Suburban
1989 Chevrolet R2500
1989-1990 Chevrolet R2500 Suburban
1987-1988 Chevrolet R30
1989-1990 Chevrolet R3500
1969-1972 Chevrolet Townsman
1987-1988 Chevrolet V20 Suburban
1990 Chevrolet V2500 Suburban
1987-1988 Chevrolet V30
1989-1990 Chevrolet V3500
1962-1966 Chrysler 300
1963 Chrysler New Yorker
1963 Chrysler Newport
1965-1971 Chrysler Newport
1959-1960 Chrysler Saratoga
1959-1961 Chrysler Town & Country
1963-1971 Chrysler Town & Country
1959-1961 Chrysler Windsor
1959-1960 DeSoto Adventurer
Attributes
1st Oil Groove 3/16
1st Oil Ring Material STEEL RAIL/STAINLESS EXP
2nd Groove 5/64
2nd Ring Surface Treatment PHOSPHATE
Alternate Part Number 2M683.020
California Proposition 65 No
Engborein 4.25
Hazardous Material Code N
Life Cycle Status Code Available to Order
NAFTA Preference Criterion Code B
Notes W/Deep Oil Grv.
SDR Required Flag N
Top Groove 5/64
Top Ring Surface Treatment PLASMA MOLY
GTIN 00075538036623