Hastings 3.875" Standard Bore, Single Cylinder Ring Set with 1/16" Top Ring, 1/16" Second Ring and a First Oil Ring is 3/16".
This Hastings Single Cylinder Ring Set has a top ring manufactured from grey iron with phosphate 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
1969 Checker Deluxe
1969-1970 Checker Marathon
Attributes
1st Oil Groove 3/16
1st Oil Ring Material STEEL RAIL/STAINLESS EXP
2nd Groove 1/16
2nd Ring Surface Treatment PHOSPHATE
Alternate Part Number 670S
California Proposition 65 No
Engborein 3.875
Hazardous Material Code N
Life Cycle Status Code Available to Order
NAFTA Preference Criterion Code B
SDR Required Flag N
Top Groove 1/16
Top Ring Surface Treatment PHOSPHATE
GTIN 00075538034124