Sierra 18-5640 Outboard Starter for Johnson/Evinrude V6 Outboards, Replaces OMC 778992

The Sierra 18-5640 is a replacement outboard starter engineered for Johnson/Evinrude V6 outboard motors. It is built as a direct cross-reference to the original equipment starter, giving boat owners a straightforward way to restore reliable cranking power without sourcing a discontinued OMC part. The housing and components are constructed of metal for durability in a marine environment, where vibration, moisture, and temperature swings put constant stress on electrical and drive components.

This starter is sold under Sierra's own part number, 18-5640, and is packaged at 12.0 inches long by 4.25 inches wide by 4.25 inches high, with a finished weight of 9.05 pounds. It is designed as a bolt-in replacement for the applicable Johnson/Evinrude V6 outboard starter, so installation follows the same mounting and wiring points as the original unit. Because it is a direct fit-and-function replacement, no modification to the starter mounting bracket or wiring harness should be required.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-5640
• Product Type: Outboard Starter
• Material: Metal
• Color: White
• Package Length: 12.0 inches
• Package Width: 4.25 inches
• Package Height: 4.25 inches
• Weight: 9.05 pounds
• OEM Cross Reference: 778992
• UPC: 808282111434

Fitment

• Johnson/Evinrude V6 outboards

Replaces (OEM)

• 778992

Frequently Asked Questions

What does the Sierra 18-5640 starter fit? The Sierra 18-5640 is built for Johnson/Evinrude V6 outboard motors as a direct replacement starter.

Is the Sierra 18-5640 a genuine OEM starter or an aftermarket part? The 18-5640 is a Sierra-branded replacement starter, not an OMC-branded original part, but it is cross-referenced to OEM number 778992 for the same application.

What OEM number does the Sierra 18-5640 replace? Sierra part 18-5640 cross-references to OEM number 778992.

How much does the Sierra 18-5640 starter weigh? The Sierra 18-5640 outboard starter weighs 9.05 pounds.

What are the package dimensions of the 18-5640 starter? The Sierra 18-5640 ships in a package measuring 12.0 inches long by 4.25 inches wide by 4.25 inches high.

What material is the Sierra 18-5640 starter made of? This starter is constructed of metal, providing durability for marine use.

What color is the Sierra 18-5640 starter? The Sierra 18-5640 is finished in white.

Does installing the Sierra 18-5640 require any modification? No, the 18-5640 is designed as a direct bolt-in replacement for the applicable Johnson/Evinrude V6 outboard starter, using the same mounting points as the original.

Will the Sierra 18-5640 work on any outboard motor? No, it is application-specific to Johnson/Evinrude V6 outboard motors and should be matched to that application before ordering.

What is the UPC for the Sierra 18-5640 starter? The UPC for the Sierra 18-5640 outboard starter is 808282111434.