Sierra 18-5810 Starter Solenoid, Replaces 809463A1, for GM V6 & V8 PG 260 Series Starters (1983-Up)

The Sierra 18-5810 is a horizontal-post starter solenoid built for PG 260 Series starters used on GM V6 and V8 marine engines (1983-Up). It serves as the direct switching component between the ignition circuit and the starter motor, handling the high-current draw needed to engage the starter when the key is turned. The solenoid ships in white, in Sierra's original display packaging, ready to install as a direct replacement for the original equipment unit.

This part is a straightforward electrical component rather than a rebuild kit, so installation is a matter of disconnecting the battery, removing the old solenoid's mounting and wiring connections, and transferring the leads to the new unit in the same configuration. It is designed to match the physical mounting and terminal layout of the OEM solenoid it replaces, so no modification to existing wiring or brackets is required on applications it fits.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-5810
• Category: Mercruiser Solenoids
• Application: PG 260 Series Starters, GM V6 & V8 (1983-Up)
• OEM Cross-Reference: 809463A1, 8094631, 809463, 8094621, 809462
• Weight: 0.31 pounds
• Color: White
• Package Dimensions: 7 x 4.8 x 2.8 inches
• Item Dimensions: 0.39 x 0.39 x 0.39 inches
• UPC: 030999320001

Fitment

• PG 260 Series Starters
• GM V6 & V8 engines (1983-Up)

Replaces (OEM)

• 809463A1
• 8094631
• 809463
• 8094621
• 809462

Frequently Asked Questions

What does the Sierra 18-5810 solenoid fit? The Sierra 18-5810 is built for PG 260 Series starters used on GM V6 and V8 marine engines from 1983 and up.

Which OEM part numbers does the 18-5810 replace? It replaces OEM numbers 809463A1, 8094631, 809463, 8094621, and 809462, so any of those numbers should cross to the Sierra 18-5810.

Is the 18-5810 a genuine Sierra part or a generic aftermarket unit? It is a Sierra-branded solenoid, sold in Sierra's own display packaging, engineered as a direct replacement for the listed OEM solenoids.

How much does the 18-5810 solenoid weigh? The Sierra 18-5810 weighs 0.31 pounds.

What color is the housing on this solenoid? The 18-5810 solenoid has a white housing.

What are the package dimensions of the 18-5810? In its retail display packaging, the Sierra 18-5810 measures 7 x 4.8 x 2.8 inches.

Does the 18-5810 use a horizontal or vertical post terminal design? The Sierra 18-5810 is a horizontal-post solenoid, matching the terminal orientation of the starters it is designed to replace.

Will the 18-5810 work on a GM V6 engine as well as a V8? Yes, this solenoid is listed for PG 260 Series starters on both GM V6 and V8 marine engines (1983-Up).

What is included when I order the 18-5810? You receive one Sierra 18-5810 horizontal-post solenoid in its original display packaging.

Is any special wiring modification needed to install the 18-5810? No, the Sierra 18-5810 is designed to match the mounting and terminal layout of the original PG 260 Series starter solenoid, so existing wiring connects directly.

Does Sierra offer a warranty on the 18-5810 solenoid? Yes, the Sierra 18-5810 is covered under Sierra's standard customer satisfaction warranty that applies to its parts.

What is the UPC for the Sierra 18-5810 solenoid? The UPC for the Sierra 18-5810 starter solenoid is 030999320001.