$1689.99

Sierra Upper Unit Assembly for Mercruiser Sterndrive, 1547-9412A21

. Built with proven components, the gears in these units have passed a 300 hour extreme endurance test with flying colors. All units are pressure and vacuum tested and subjected to stringent quality control tests at every step of the manufacturing process.replaces: Mercury Marine 1547-9412A21

$1679.99

Sierra Upper Unit Assembly for Mercruiser Sterndrive, 1547-9412A22

Built with proven components, the gears in these units have passed a 300 hour extreme endurance test with flying colors. All units are pressure and vacuum tested and subjected to stringent quality control tests at every step of the manufacturing process. replaces: Mercury Marine 1547-9412A22

$1679.99

Sierra Upper Unit Assembly for Mercruiser Sterndrive, 1547-9412A23

Built with proven components, the gears in these units have passed a 300 hour extreme endurance test with flying colors. All units are pressure and vacuum tested and subjected to stringent quality control tests at every step of the manufacturing process. replaces: Mercury Marine 1547-9412A23

$699.99

Sierra Upper Unit Gear Repair Kit for Mercruiser Stern Drives

Replaces: Mercury Marine 43-803102T1

$599.99

Sierra Upper Unit Gear Repair Kit for Mercruiser Stern Drives

Replaces: Mercury Marine 43-803118T1

$619.99

Sierra Upper Unit Gear Repair Kit for Mercruiser Stern Drives

Replaces: Mercury Marine 43-803119T1

$599.99

Sierra Upper Unit Gear Repair Kit for Mercruiser Stern Drives

Replaces: Mercury Marine 43-803120T1

$579.99

Sierra Upper Unit Gear Repair Kit for Mercruiser Stern Drives

Replaces: Mercury Marine 43-803102T1

$639.99

Sierra Upper Unit Gear Repair Kit( 1.47:1 ratio) for Mercruiser Stern Drives

Replaces: Mercury Marine 43-803103T1

$569.99

Sierra Upper Unit Gear Repair Kit( 1.62:1 and 2.00:1 ratio) for Mercruiser Stern Drives

Replaces: Mercury Marine 43-803104T1

$529.99

Sierra Upper Unit Gear Repair Kit( 1.81:1 ratio) for Mercruiser Stern Drives

Replaces: Mercury Marine 43-803105T1

$539.99

Sierra Upper Unit Gear Repair Kit( 1.94:1 and 2.40:1 ratio) for Mercruiser Stern Drives

Replaces: Mercury Marine 43-803106T1

$429.99

Sierra Upper Unit Gear Set for Mercruiser Stern Drives

replaces: Mercury Marine 43-18411A2 replaces: Mercury Marine 43-18410A2 Includes: (1)18-1142 (1.5:1 Ratio) Drive Gear=22 Teeth Driven Gear=20 Teeth

$369.99

Sierra Upper Unit Gear Set for Mercruiser Stern Drives

replaces: Mercury Marine 43-45814A5 (1.65:1 Ratio) Drive Gear=24 Teeth, Driven Gear=24 Teeth

$319.99

Sierra Upper Unit Gear Set for Mercruiser Stern Drives

replaces: Mercury Marine 43-75325A3 1.84:1 Ratio Drive Gear = 17 Teeth, Driven Gear = 19 Teeth

$279.99

Sierra Upper Unit Gear Set for Mercruiser Stern Drives

Replaces: Mercury Marine 43-55778A3

$969.99

Sierra Upper Unit Housing for Mercruiser Sterndrive, 1547-861063A4

Replaces: Mercury Marine 1547-861063A4

$47.99

Sierra Upper Unit Seal Kit - OMC Sterndrive/Cobra

For 100-245 Stringer Unit (1968-72)Replaces 981799Contains:One (1) Upper Gearcase Gasket (18-0939) - OE #315189Four (4) Oil Seals (18-2073) - OE #981268One (1) Rubber Seal (18-3111) - OE #907774Two (2) Washers (18-4248) - OE #311598Four (4) O-Rings (18-7103) - OE #308624One (1) O-ring (18-7107)…

$69.99

Sierra Upper Unit Seal Kit for Mercruiser Stern Drives

Replaces: Mercury Marine 26-16709A2

$84.99

Sierra Upper Unit Seal Kit for Volvo Penta Stern Drives

Replaces: Volvo 3888917

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