Hastings 3.307"/84.00 mm Bore +.020" Over Size, 4-Cylinder Ring Set with 2.00 mm Top Ring, 2.00 mm Second Ring and a First Oil Ring is 4.00 mm.
This Hastings 4-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
1975-1982 Chevrolet LUV
1972-1974 Chevrolet Luv Pickup
1981-1982 Dodge D50
1983 Dodge Ram 50
1986-1988 Ford F-150
1988 Ford Thunderbird
Attributes
1st Oil Groove 4.00
1st Oil Ring Material STEEL RAIL/STAINLESS EXP
2nd Groove 2.00
2nd Ring Surface Treatment PHOSPHATE
Alternate Part Number 4247.020
California Proposition 65 No
Engborein 3.307
Engboremetric 84.00
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 PHOSPHATE
GTIN 00075538000730