Sierra 18-5634 Outboard Starter Motor, Replaces OMC 586283, Fits 85-115 HP Crossflow Outboards 1973-99

The Sierra 18-5634 is a starter motor built for outboard engines, engineered to meet or exceed the performance of the original equipment part it replaces. It draws 20 amps and delivers 1.4 KW of output on a single-phase design, giving reliable cranking power for the outboard applications it fits. The starter is compact, measuring 4 x 10.5 x 4.25 inches and weighing 7.19 pounds, making it a straightforward drop-in replacement for the applicable engine range.

This starter is designed for 85 thru 115 HP crossflow outboard engines built 1973-99, and it replaces OEM/OMC part number 586283. Sierra manufactures this component to the same fit, form, and function as the original starter it supersedes, so installation follows the same mounting and wiring points as the OEM unit.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-5634
• Amperage: 20 Amps
• Wattage: 1.4 KW
• Phase Type: Single Phase
• Item Dimensions: 4 x 10.5 x 4.25 inches
• Weight: 7.19 pounds
• UPC: 747730044194
• Fitment: 85 thru 115 HP crossflow outboard engines, 1973-99
• OEM Cross-Reference: 586283

Fitment

• 85 thru 115 HP crossflow outboard engines, 1973-99

Replaces (OEM)

• 586283

Frequently Asked Questions

What outboard engines does the Sierra 18-5634 starter fit? The 18-5634 fits 85 thru 115 HP crossflow outboard engines built 1973-99.

What OEM part number does the 18-5634 replace? It replaces OEM/OMC part number 586283.

Is the 18-5634 a genuine Sierra part or aftermarket? The 18-5634 is manufactured by Sierra, a supplier of OEM-equivalent marine parts, and it is designed to meet or exceed the performance of the original starter it replaces.

How much does the Sierra 18-5634 starter weigh? The Sierra 18-5634 outboard starter weighs 7.19 pounds.

What are the dimensions of the 18-5634 starter motor? The starter measures 4 x 10.5 x 4.25 inches.

What is the electrical rating of the 18-5634 starter? It is rated at 20 amps and 1.4 KW of output, running on a single-phase design.

Will the 18-5634 work on a 60 or 70 HP outboard? No, the 18-5634 is designed for 85 thru 115 HP crossflow outboard engines from 1973-99; smaller HP ranges use a different Sierra starter part number.

Does the 18-5634 include mounting hardware or a starter drive? The listing covers the 18-5634 starter motor itself; check the OEM cross-reference 586283 to confirm compatibility with your existing mounting hardware and drive components.

How does the 18-5634 compare to the original OMC starter? The Sierra 18-5634 is built to meet or exceed the specifications of the OEM 586283 starter it replaces, using the same electrical rating and mounting configuration.

What is the UPC for the Sierra 18-5634 starter? The UPC for the Sierra 18-5634 outboard starter is 747730044194.