Speedometer Hose Coupling Kit – Fits MerCruiser Alpha One Gen 2 (Replaces 815956A1, 22-815956A1)
Speedometer Hose Coupling Kit – Fits MerCruiser Alpha One Gen 2 (Replaces 815956A1, 22-815956A1) is backordered and will ship as soon as it is back in stock.
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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.).
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Speedometer Hose Coupling Kit – Fits MerCruiser Alpha One Gen 2 (Re...
Product Details
This Speedometer Hose Coupling Kit is an essential component for connecting the pitot tube to the speedometer gauge, ensuring accurate speed readings. It is specifically designed to fit MerCruiser Alpha One Gen 2 sterndrive models manufactured between 1991 and 1997.
It serves as a direct replacement for Mercury Marine/Quicksilver part numbers 815956A1 and 22-815956A1.
- Installs easily as a direct, screw-in replacement.
- Constructed from durable, marine-grade plastic for longevity in aquatic environments.
- The kit includes one coupler and a zip tie for a secure hose connection.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket suppliers.
| Brand | Part Number |
|---|---|
| Mercury Marine/Quicksilver | 815956A1 |
| Mercury Marine/Quicksilver | 22-815956A1 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For MerCruiser applications, this part fits the Alpha One Gen 2 sterndrive across its specified production years.
| Brand | Model | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|
| MerCruiser | Alpha One Gen 2 | 4-Stroke | 1991–1997 | 815956A1/22-815956A1 | Sterndrive application |
Technical Specs
- Product Type
- Speedometer Hose Coupling Kit
- Installation
- Direct replacement, screw-in
- Connection
- Speedometer hose coupling/connector
- Housing Material
- Marine Grade Plastic
- Housing Color
- Black
- Dimensions
- 3" L x 3" W (76.2 mm x 76.2 mm)
- Weight
- 0.29 kg (10.2 ounces)
- Fitting Type
- Pitot tube connector/adapter
- Warranty
- 30-day return/replacement
- Other Technical Attributes
- Essential component for boat speedometer system; transmits water pressure readings from pitot tube to speedometer gauge
What’s in the Box
- 1 x Coupler connecting kit with zip tie (815956A1/22-815956A1)
Installation Notes
- Ensure the engine is turned off and the vessel is secured before starting work.
- Locate the existing speedometer hose coupling on the sterndrive unit.
- Carefully disconnect the speedometer hose from the old fitting.
- Unscrew and remove the old coupling. Note its orientation.
- Clean the threads on the sterndrive to ensure a clean, debris-free connection.
- Screw the new coupling into place by hand until it is snug. Avoid over-tightening to prevent damage to the plastic threads.
- Attach the speedometer hose to the new coupling and secure it firmly with the included zip tie.
- Double-check that the hose is secure and has no kinks before operating the boat.
Troubleshooting & FAQ
How do I know if this coupling kit will fit my sterndrive?
This kit is a confirmed fit for MerCruiser Alpha One Gen 2 sterndrives manufactured from 1991 through 1997. Always compare the part numbers (815956A1, 22-815956A1) and photos to your existing part to guarantee compatibility.
What are the signs of a failing speedometer coupling?
Symptoms of a bad coupling include an erratic or completely non-functional speedometer gauge, or visible cracks, discoloration, and water leaks from the coupling itself.
Is this part difficult to install?
Installation is straightforward for those with basic mechanical skills. It is a direct screw-in part and requires no specialized tools. However, professional installation is always recommended for safety.
Why is the speedometer reading incorrectly after installation?
If your speedometer is still not working correctly after replacing the coupling, check the pitot tube for blockages (like mud or debris) and inspect the full length of the hose for any kinks, splits, or loose connections.
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
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