Sierra 18-5605 Outboard Starter for Mercury 30 Jet 3-Cylinder, Replaces 50-898265005 and 50-73521, White, 12 Volt

The Sierra 18-5605 is a 12-volt DC outboard starter built as a direct replacement for Mercury 30 Jet 3-cylinder outboard engines within the G159200 to G589999 serial number range. Constructed with a metal housing, it is designed to meet or exceed the performance of the original equipment starter it replaces. The white finish matches the factory color scheme used on the applicable Mercury outboards, so it installs without an odd-looking mismatch under the cowling.

This starter carries a compact footprint of 9.75 x 4.5 x 6 inches and weighs 6.33 pounds, making it a manageable, bolt-in swap for anyone replacing a worn or failed starter motor rather than rebuilding one. It cross-references directly to Mercury OEM part numbers 50-898265005 and 50-73521, so it is a straightforward match for boaters looking for a factory-equivalent replacement rather than a generic universal-fit substitute.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-5605
• Product Type: Outboard Starter
• Voltage: 12 Volts (DC)
• Material: Metal
• Color: White
• Weight: 6.33 pounds
• Item Dimensions (L x W x H): 9.75 x 4.5 x 6 inches
• Serial Number Range: G159200 to G589999
• UPC: 747730043937
• OEM Cross-Reference: 50-898265005, 50-73521

Fitment

• Mercury 30 Jet, 3-cylinder outboard, serial number range G159200 to G589999

Replaces (OEM)

• 50-898265005
• 50-73521

Frequently Asked Questions

What does the Sierra 18-5605 fit? The Sierra 18-5605 fits Mercury 30 Jet 3-cylinder outboard engines within the serial number range G159200 to G589999.

What OEM part numbers does the 18-5605 starter replace? It replaces Mercury OEM part numbers 50-898265005 and 50-73521, making the 18-5605 a direct cross-reference for those factory starters.

Is the 18-5605 a 12-volt starter? Yes, the Sierra 18-5605 is a 12-volt DC outboard starter.

How much does the 18-5605 starter weigh? The Sierra 18-5605 weighs 6.33 pounds.

What are the dimensions of the 18-5605 starter? It measures 9.75 x 4.5 x 6 inches (length x width x height).

What material is the Sierra 18-5605 starter made from? The 18-5605 is constructed with a metal housing for durability in a marine environment.

What color is the 18-5605 starter? It has a white finish, matching the factory color used on the applicable Mercury outboards.

Is the Sierra 18-5605 a genuine Mercury part or aftermarket? The 18-5605 is a Sierra-branded aftermarket starter engineered to meet or exceed the performance of the original Mercury 50-898265005 and 50-73521 starters it replaces.

Will the 18-5605 fit any Mercury outboard, or only specific serial numbers? The 18-5605 is designated for Mercury 30 Jet 3-cylinder outboards within the G159200 to G589999 serial number range, not a universal fit across all Mercury outboards.

What is included when I order the 18-5605? Ordering the Sierra 18-5605 gets you one complete outboard starter motor, ready to install as a direct replacement.

Does the UPC 747730043937 correspond to the Sierra 18-5605? Yes, UPC 747730043937 is the identifier for the Sierra 18-5605 outboard starter.