Sierra 06729 Exhaust Elbow Gasket for closed cooling, Mercruiser Stern Drives, Qty. 2 alt-sdg-2906011 The granular activated carbon (GAC)

The granular activated carbon (GAC) reduces the taste and odor of chlorine as well as reducing sediment and scale

Once applied

and won't overheat with extended use

Concentrated formula is tough on dirt yet economical to use

Sierra 06729 Exhaust Elbow Gasket for closed cooling, Mercruiser Stern Drives, Qty. 2 alt-sdg-2906011 The granular activated carbon (GAC)Exhaust Elbow Gasket for closed cooling systems. 2 per pack. Mercruiser Stern Drives. Used with: Riser: 1970 2, 1976 2. Meets or exceeds OEM specifications. Fits GM based V6 and V8 engines with center rise outlet exhaust manifold. Fits Manifold: 18 1953 2; Manifold Spacers: 18 1985, & 18 1908; Elbows: 18 1970 2, 18 1976 2, 18 1974 1