Hastings 4.040" Bore +.070" 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 does not specify Ring Material or Ring Surface Treatment

Application Summary:

Year Make/Model
1967 Buick Gran Sport
1968-1969 Buick GS 400
1967-1968 Buick Skylark
1968-1969 Buick Sportwagon
1970-1973 Dodge Challenger
1970-1973 Dodge Charger
1970-1973 Dodge Coronet
1968-1973 Dodge Dart
1972-1973 Dodge Polara
1968-1973 Plymouth Barracuda
1971 Plymouth Belvedere
1970-1973 Plymouth Cuda
1970-1973 Plymouth Duster
1968-1973 Plymouth Satellite
1968-1973 Plymouth Valiant
Attributes
1st Oil Groove 3/16
2nd Groove 5/64
Alternate Part Number 694.070
California Proposition 65 No
Engborein 4.040
Hazardous Material Code N
Life Cycle Status Code Available to Order
NAFTA Preference Criterion Code B
SDR Required Flag N
Top Groove 5/64
GTIN 00075538000402