Power Trim Sender Kit – Fits Mercury/MerCruiser Alpha & Bravo Drives (Replaces 805320A03, 805129A3, 805130A2)
Power Trim Sender Kit – Fits Mercury/MerCruiser Alpha & Bravo Drives (Replaces 805320A03, 805129A3, 805130A2) is backordered and will ship as soon as it is back in stock.
Couldn't load pickup availability
Worry-free returns
Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Power Trim Sender Kit – Fits Mercury/MerCruiser Alpha & Bravo D...
Product Details
This Power Trim Sender Kit is designed for Mercury/MerCruiser stern drives, including MC-I, R, MR, Alpha One, Alpha One Gen II, and Bravo models that use analog gauge systems. It ensures your vessel's trim position is accurately displayed, allowing for optimal performance and fuel efficiency.
This kit serves as a direct replacement for Mercury/Quicksilver part numbers 805320A03, 805129A3, 805130A2, 805320A1, 17693A2, 96863A15, and Sierra 18-7633.
- Engineered for direct-fit installation.
- Features a standard crimp-style electrical connector.
- Specifically for systems using analog instruments.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Mercury/Quicksilver | 805320A03 |
| Mercury/Quicksilver | 805129A3 |
| Mercury/Quicksilver | 805130A2 |
| Mercury/Quicksilver | 805320A1 |
| Mercury/Quicksilver | 17693A2 |
| Mercury/Quicksilver | 96863A15 |
| Sierra | 18-7633 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This kit is confirmed for use with the following MerCruiser stern drive models equipped with analog instruments.
| Brand | Model Series | OEM Part No. |
|---|---|---|
| MerCruiser | MC-I | 805320A03 |
| MerCruiser | R | 805320A03 |
| MerCruiser | MR | 805320A03 |
| MerCruiser | Alpha One | 805320A03 |
| MerCruiser | Alpha One Gen II | 805320A03 |
| MerCruiser | Bravo | 805320A03 |
Technical Specs
- Product Type
- Power Trim Sender Kit
- Installation
- Direct replacement
- Compatible Instruments
- Analog
- Connector Type
- Crimp
- Circuit Type
- 1-way
- Mounting Type
- Surface Mount
- Actuator Type
- Limit Switch
- Contact Type
- Normally Closed
- Contact Material
- Stainless Steel
- Operation Mode
- ON-OFF
- Terminal
- Screw
- Number of Positions
- 2
What’s in the Box
- 1 x Trim Sender (Replaces 805320A03)
- 1 x Trim Limit Switch
Installation Notes
- Safety First: Disconnect the boat's battery before beginning any electrical work.
- Locate Components: Identify the existing trim sender and limit switch, typically mounted on the gimbal ring and bell housing of the stern drive.
- Disconnect Wiring: Carefully unplug the electrical connectors for the old sender and switch. Note the wire routing.
- Remove Old Parts: Unscrew and remove the old trim sender and limit switch assembly.
- Install New Kit: Mount the new components from the kit in the same location, ensuring they are securely fastened.
- Connect New Wiring: Route and connect the new wires according to the original configuration. Ensure all connections are tight and waterproofed if necessary.
- Test Operation: Reconnect the battery. Operate the power trim and verify that the trim gauge responds correctly and the limit switch functions at the upper trim range.
Troubleshooting & FAQ
How do I know if my trim sender or limit switch is failing?
Common signs of failure include an inaccurate or non-functional trim gauge on your dashboard, the trim motor operating continuously, or the trim stopping at incorrect positions. The limit switch specifically prevents trimming up too far while underway, so if that fails, you may lose that safety feature.
Is this kit compatible with digital instrument gauges?
No, this particular trim sender kit is designed specifically for use with analog (needle-style) trim gauges. Using it with a digital system may result in incorrect readings or incompatibility.
What is the difference between the trim sender and the limit switch?
The trim sender's job is to send a variable signal to your dashboard gauge, showing the drive's current position. The limit switch is a safety device that cuts power to the "trim up" circuit when the drive reaches its maximum safe operating height, preventing potential damage.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost?
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns?
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
