The MERCURY 8M0116808 Steering Actuator Kit is a marine steering actuator assembly associated with Mercury Marine joystick piloting and outboard steering systems. The part number is identified as a Mercury steering actuator and is also associated with Parker actuator hardware. Available listings identify 8M0116808 as a steering actuator kit, while parts references show that this number has been superseded by 8M0116809 as a functional replacement.
The 8M0116808 is designed to provide controlled mechanical steering movement within compatible marine propulsion systems. It is particularly associated with Mercury Joystick Piloting applications and Verado outboard configurations. Compatibility should be confirmed against the vessel, engine configuration, existing actuator, harness arrangement, and applicable parts documentation before installation.
MERCURY 8M0116808
📋 Product Datasheet
| Parameter | Value |
|---|---|
| Brand | MERCURY |
| Model | 8M0116808 |
| Series | Mercury Marine Joystick Piloting / Steering System |
| Product Name | Steering Actuator Kit |
| Product Type | Marine Steering Actuator |
| Country of Origin | United States |
| Product Status | New – Open Box |
| Dimensions | Approx. 24 × 12 × 6.5 in shipping dimensions |
| Weight | Approx. 20.06 lb shipping weight |
| Power / Electrical Specification | Application-dependent; verify vessel system requirements |
The available listing identifies the item as New – Open Box and gives the country of origin as the United States. The published shipping dimensions and weight are approximately 24 × 12 × 6.5 inches and 20.06 lb respectively; these should not be treated as the actuator’s physical dimensions.
🔧 Troubleshooting & Common Problems
🔹 Actuator does not move: Check the steering-system power supply, electrical connections, harness condition, control system, and actuator installation.
🔹 Steering movement is abnormal: Inspect the mechanical linkage, actuator mounting points, steering components, and harness routing for interference or damage.
🔹 Joystick steering fault: Confirm that the actuator is the correct version for the installed joystick-piloting system. Earlier 8M0116808 units may have been replaced by 8M0116809.
🔹 Intermittent operation: Check connectors for corrosion, loose terminals, moisture ingress, damaged wiring, or poor connections.
🔹 Replacement compatibility concern: Do not assume that another actuator with a similar appearance is interchangeable. Verify the exact Mercury part number and application before installation.
⚠️ Safety Precautions
🛠️ Disconnect the appropriate power sources before servicing or replacing the actuator.
⚓ Secure the vessel and propulsion system against unintended movement before performing steering-system work.
🔌 Keep electrical connectors protected from water, corrosion, and contamination.
🔩 Use the correct mounting hardware and follow the applicable Mercury installation/service procedures.
🚫 Do not operate the vessel if the steering system shows uncontrolled, delayed, or inconsistent steering behavior.
📰 Product News & Availability Information
The 8M0116808 part number has been superseded by Mercury part number 8M0116809 in parts references. The newer number is described as a functional replacement, and the replacement may look different from the original actuator.
Parts references also identify 8M0116808 as a component used in Mercury Joystick Piloting steering-actuator assemblies, with related kits incorporating multiple actuators, harnesses, brackets, and linkage components.
❓ Common Questions & Answers
Q: What is MERCURY 8M0116808?
A: It is a Mercury Marine steering actuator kit used in compatible marine steering and joystick-piloting applications.
Q: Is 8M0116808 a steering actuator or a complete steering system?
A: It is a steering actuator assembly, not an entire steering system.
Q: Is 8M0116808 still the current part number?
A: Parts references indicate that 8M0116808 has been superseded by 8M0116809.
Q: Can 8M0116809 replace 8M0116808?
A: Parts information identifies 8M0116809 as a functional replacement, but application compatibility should still be verified before installation.
Q: What systems is this actuator associated with?
A: It is associated with Mercury Joystick Piloting and compatible outboard steering applications, including Verado-related configurations.
Q: Is this part suitable for every Mercury outboard?
A: No. Compatibility depends on the specific engine, steering configuration, vessel installation, and joystick-piloting system.
🔩 10 Other Mercury Models / Related Parts
- Mercury 8M0116809 — Steering Actuator and Extension Harness Kit
- Mercury 8M0109155 — Previous actuator/harness assembly reference
- Mercury 8M0109149 — Steering actuator/harness application reference
- Mercury 8M0168425 — Steering actuator retainer
- Mercury 8M0157207 — Quad Tie Bar Steering Actuator and Harness Kit
- Mercury 8M0157208 — Quad Tie Bar Steering Actuator Kit
- Mercury 87-8M0150039 — APS / Combiner Kit
- Mercury 8M0150037 — Hot Stud Kit
- Mercury 8M0086774 — Trailering Bracket
- Mercury 98-8M0073161 — Link Rod Kit
These related part numbers are associated with Mercury joystick-piloting and steering-actuator assemblies; exact application should be checked against the specific vessel and propulsion configuration.
