Hastings 3.386"/86.00 mm Bore +.060" Over Size, Single Cylinder Ring Set with 2.00 mm Top Ring, 2.50 mm Second Ring and a First Oil Ring is 4.00 mm.
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
1969-1971 Toyota Corona
1970-1971 Toyota Hi-Lux
Attributes
1st Oil Groove 4.00
1st Oil Ring Material STEEL RAIL/STAINLESS EXP
2nd Groove 2.50
2nd Ring Surface Treatment PHOSPHATE
California Proposition 65 No
Engborein 3.386
Engboremetric 86.00
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 00075538060970