To help you find what you are looking for we have a search / Find it Box--Read below to find out how to use the Find It Box...

Search for your needs with plain text, OEM part numbers, DESCRIPTION, or our part number, like(mercruiser manifold), (Suzuki trim motor), (velvet drive kit), etc. If you have difficulty in finding your need, please call us and a tech will assist you. Alternatively, click on a category picture below and drill down. For VELVET DRIVE parts, enter VD in search box

177 Fulford Dr.
Harkers Island, NC 28531
(252) 504-3355
Check Your Order Status
(Tracking Information)

Shopping Cart  [more]


Sensor Pickup for Mercruiser Thunderbolt Electronic Ignition 87-861780A2


  • Part #: SIE18-5116-1

Add to Cart:

Ignition Sensor for Mercruiser Thunderbolt Electronic Ignition Systems.

It is for all Mercruiser Thunderbolt Distributors with nut or bullet connections used on V6 & V8 applications.

Replaces Merc. # 87-861780Q4, 87-861780A2

Your current sensor may only have two wires or terminals, this item has improved circuitry which incorporates a separate ground for improved performance and reliability.

Replaces Ring terminal sensor or bullet end connectors.

Troubleshoot This Part with these Instructions

Copyright © 2021 Basic Power Industries.