Hastings 3.680"/89.00 mm Standard Bore, 4-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 4-Cylinder Ring Set has a top ring manufactured from grey iron with chrome ring surface treatment and a second ring manufactured from grey iron with a 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
1986-1991 Ford Taurus
1986 Mercury Sable
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 2C5688
California Proposition 65 No
Engborein 3.680
Engboremetric 93.47
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 CHROME
GTIN 00075538146346