Manley Subaru WRX EJ205/WRX STi EJ257 92.5mm Bore +0.5mm Oversize Bore 1.2mmx1.2mmx2.8mm Ring Set subaru-forester-1999 25 Nyloc Flange Nut (1)

25 Nyloc Flange Nut (1)

2000 Dodge Durango Base

The main difference is that an AOS system returns what is collected back into the oil pan so there is no servicing required

08-14 Subaru WRX

1985 Oldsmobile Cutlass Ciera GT

Manley Subaru WRX EJ205/WRX STi EJ257 92.5mm Bore +0.5mm Oversize Bore 1.2mmx1.2mmx2.8mm Ring Set subaru-forester-1999 25 Nyloc Flange Nut (1)Manley performance piston rings feature a high performance, ductile iron top ring with a plasma moly inlay. The second rings are constructed from reverse twist cast iron, and the oil rings are 3 piece, standard tension rings. Manley performance rings are available in both standard and file fit sizes. Choose the set designed for your engine application.