Sierra 18-5116-1 Ignition Sensor Kit, Replaces Mercury Marine 87-861780A2, Fits GM V-6 & V-8 Thunderbolt Ignition (1981-1997)

Sierra 18-5116-1 Ignition Sensor Kit, Replaces Mercury Marine 87-861780A2, Fits GM V-6 & V-8 Thunderbolt Ignition (1981-1997)

$74.24
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Sierra 18-5116-1 Ignition Sensor Kit, Replaces Mercury Marine 87-861780A2, Fits GM V-6 & V-8 Thunderbolt Ignition (1981-1997)
  • Sierra 18-5116-1 Ignition Sensor Kit, Replaces Mercury Marine 87-861780A2, Fits GM V-6 & V-8 Thunderbolt Ignition (1981-1997)
  • Sierra 18-5116-1 Ignition Sensor Kit, Replaces Mercury Marine 87-861780A2, Fits GM V-6 & V-8 Thunderbolt Ignition (1981-1997)
Sierra 18-5116-1 Ignition Sensor Kit, Replaces Mercury Marine 87-861780A2, Fits GM V-6 & V-8 Thunderbolt Ignition (1981-1997)

Sierra 18-5116-1 Ignition Sensor Kit, Replaces Mercury Marine 87-861780A2, Fits GM V-6 & V-8 Thunderbolt Ignition (1981-1997)

$74.24

The Sierra 18-5116-1 Ignition Sensor Kit is a direct-fit ignition sensor built for GM V-6 & V-8 marine engines equipped with Thunderbolt ignition systems. It is designed as a replacement for the original Mercury Marine sensor used in Thunderbolt ignition (1981-1997) applications with nut connectors, restoring reliable spark timing signal to the ignition module.

The sensor uses a flange mount design with a push-pull output type, and its housing is constructed of ceramic and metal for durability in a marine engine environment. It is a compact, discreet-style component measuring 0.39 x 0.39 x 0.39 inches, making it a precise, drop-in replacement rather than a universal part. The kit includes one ignition sensor.

This sensor is intended for GM V-6 & V-8 engines with Thunderbolt ignition, and it replaces the Mercury Marine 87-861780A2, 87-861780Q4, and 87-892150A02 ignition sensors.

Specifications

  • Brand: Sierra
  • Manufacturer Part Number: 18-5116-1
  • Product Type: Ignition Sensor Kit
  • Item Dimensions: 0.39 x 0.39 x 0.39 inches
  • Weight: 0.23 pounds
  • Material: Ceramic, Metal
  • Mounting Type: Flange Mount
  • Output Type: Push-Pull
  • Included Components: Ignition Sensor
  • Unit Count: 1
  • UPC: 808282197926
  • GTIN: 00808282197926

Fitment

  • GM V-6 & V-8 engines with Thunderbolt ignition (1981-1997), nut connectors

Replaces (OEM)

  • 87-861780A2
  • 87-861780Q4
  • 87-892150A02

Frequently Asked Questions

What engines does the Sierra 18-5116-1 ignition sensor fit? This sensor fits GM V-6 & V-8 marine engines equipped with Thunderbolt ignition (1981-1997) using nut connectors.

What OEM part numbers does the 18-5116-1 replace? The Sierra 18-5116-1 replaces Mercury Marine ignition sensors 87-861780A2, 87-861780Q4, and 87-892150A02.

Is the 18-5116-1 an OEM Mercury Marine part or aftermarket? It is a Sierra aftermarket replacement sensor built to match the fit and function of the original Mercury Marine 87-861780A2 and 87-861780Q4 sensors.

What are the dimensions of this ignition sensor? The Sierra 18-5116-1 measures 0.39 x 0.39 x 0.39 inches, a compact flange-mount unit.

How much does the 18-5116-1 ignition sensor weigh? It weighs 0.23 pounds.

What material is the ignition sensor made from? The 18-5116-1 sensor housing is made of ceramic and metal.

How does the sensor mount and connect? It uses a flange mount design with a push-pull output type, matching the nut-connector setup used on Thunderbolt ignition systems.

What is included when you order the 18-5116-1? The kit includes one ignition sensor.

Will this sensor work on non-GM Thunderbolt ignition engines? No, the 18-5116-1 is specified for GM V-6 & V-8 engines with Thunderbolt ignition (1981-1997).

Can I use the 18-5116-1 to replace a failed OEM sensor without other modifications? Yes, since it is built as a direct replacement for the Mercury Marine 87-861780A2, 87-861780Q4, and 87-892150A02 sensors on the same Thunderbolt ignition system.

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