Hastings 3.780"/96.00 mm Bore +.020" Over Size, Single Cylinder Ring Set with 2.00 mm Top Ring, 2.00 mm Second Ring and a First Oil Ring is 4.75 mm.
This Hastings Single Cylinder Ring Set has a top ring manufactured from ductile iron 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
1979-1980 Ford Mustang
1983-1986 Ford Mustang
1983-1988 Ford Thunderbird
1979-1980 Mercury Capri
1983-1984 Mercury Capri
1984-1986 Mercury Cougar
Attributes
1st Oil Groove 4.75
1st Oil Ring Material STEEL RAIL/STAINLESS EXP
2nd Groove 2.00
2nd Ring Surface Treatment PHOSPHATE
Alternate Part Number 2M5613S.020
California Proposition 65 No
Engborein 3.780
Engboremetric 96.00
Hazardous Material Code N
Life Cycle Status Code Available to Order
NAFTA Preference Criterion Code B
SDR Required Flag N
Top Groove 2.00
Top Ring Surface Treatment PLASMA MOLY
GTIN 00075538129691