Trim Cylinder End Cap with Seals – Fits MerCruiser Alpha I Gen II Bravo (Replaces 806191T, 18-2373)
Trim Cylinder End Cap with Seals – Fits MerCruiser Alpha I Gen II Bravo (Replaces 806191T, 18-2373) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
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Trim Cylinder End Cap with Seals – Fits MerCruiser Alpha I Gen II B...
Trim Cylinder End Cap with Seals – Fits MerCruiser Alpha I Gen II Bravo (Replaces 806191T, 18-2373) is backordered and will ship as soon as it is back in stock.
Product Details
This Trim Cylinder End Cap with Seals is a direct replacement for MerCruiser Alpha I Gen II and Bravo sterndrive systems. Designed to restore proper function to your trim ram assembly, this end cap ensures reliable hydraulic operation across multiple MerCruiser drive generations.
This component replaces OEM part numbers 806191T, 14698, 14698T, 14698T10, 8M0110717, 8M0115362, 8M0118340, 98-8M0118340, and aftermarket equivalent 18-2373.
- Seals included for complete installation
- Direct fit for MerCruiser Alpha Generation 1, Alpha Generation 2, and Bravo drives
- Restores trim cylinder hydraulic integrity
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| MerCruiser | 806191T |
| MerCruiser | 14698 |
| MerCruiser | 14698T |
| MerCruiser | 14698T10 |
| MerCruiser | 8M0110717 |
| MerCruiser | 8M0115362 |
| MerCruiser | 8M0118340 |
| MerCruiser | 98-8M0118340 |
| Aftermarket | 18-2373 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model |
|---|---|
| MerCruiser | Alpha Generation 1 |
| MerCruiser | Alpha Generation 2 |
| MerCruiser | Bravo |
Technical Specs
- Application
- Trim Cylinder End Cap
- Fitment
- MerCruiser R/MR/Alpha I, Gen II, Bravo
- Seals
- Included
- OEM Reference
- 806191T
What's in the Box
- Trim Cylinder End Cap with Seals
Installation Notes
- Disconnect battery and relieve hydraulic pressure from the trim system before beginning work.
- Remove the existing trim cylinder end cap by unbolting or unscrewing per your drive service manual.
- Inspect the cylinder bore for scoring, corrosion, or debris; clean thoroughly if necessary.
- Install the new seals onto the end cap, ensuring proper orientation and seating in the grooves.
- Apply a thin layer of compatible hydraulic fluid or assembly lubricant to the seals.
- Carefully thread or bolt the new end cap into position, avoiding cross-threading.
- Torque fasteners to manufacturer specifications using a calibrated torque wrench.
- Refill the trim system with the correct hydraulic fluid and bleed air from the lines.
- Reconnect the battery and test trim operation through full range to confirm proper seal and function.
Troubleshooting & FAQ
Which MerCruiser drives does this end cap fit?
This end cap fits MerCruiser Alpha Generation 1, Alpha Generation 2, and Bravo series drives. Verify your drive model and OEM part number before ordering.
Are the seals already installed on the end cap?
Seals are included with this end cap but may require installation during assembly. Check the packaging and install per your service manual instructions.
Can I reuse the old seals if they look fine?
No. Always replace seals when servicing hydraulic components to prevent future leaks and ensure proper system pressure.
What are signs that my trim cylinder end cap needs replacement?
Common symptoms include hydraulic fluid leaks around the trim ram, slow or erratic trim response, and loss of trim position under load. Inspect for visible cracks or seal deterioration.
Do I need to bleed the trim system after installation?
Yes. After replacing the end cap and refilling hydraulic fluid, bleed air from the system by cycling the trim through its full range multiple times.
What type of hydraulic fluid should I use?
Use MerCruiser Power Trim and Steering Fluid or an equivalent high-quality automatic transmission fluid (ATF) as specified in your owner's manual.
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 against 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.
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