Hastings 3.445"/87.50 mm Standard Bore, 4-Cylinder Ring Set with 1.20 mm Top Ring, 1.20 mm Second Ring and a First Oil Ring is 2.50 mm.
This Hastings 4-Cylinder Ring Set has a top ring manufactured from steel with chrome ring surface treatment and 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
2004-2011 Ford EcoSport
2003 Ford Mondeo
2006-2007 Ford Mondeo
2012 Ford Ranger
2006-2010 Mazda 5
2001-2009 Mazda B2300
2008-2010 Mazda MX-5
2006-2007 Mazda MX-5 Miata
2009-2015 Mazda MX-5 Miata
2005-2008 Mercury Mariner
Attributes
1st Oil Groove 2.50
1st Oil Ring Material STEEL RAIL/STAINLESS EXP
2nd Groove 1.20
2nd Ring Surface Treatment PHOSPHATE
Alternate Part Number 2C5158
California Proposition 65 No
Engborein 3.445
Engboremetric 87.50
Hazardous Material Code N
Life Cycle Status Code Available to Order
NAFTA Preference Criterion Code B
SDR Required Flag N
Top Groove 1.20
Top Ring Surface Treatment CHROME
GTIN 00075538246657