MerCruiser Trim Connector Kit for Alpha One, Alpha One Gen II, Bravo, MC-1, R & MR – 1983 & Up – Replaces 98825A4
MerCruiser Trim Connector Kit for Alpha One, Alpha One Gen II, Bravo, MC-1, R & MR – 1983 & Up – Replaces 98825A4 is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
Orders are typically processed within 1–2 business days.
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MerCruiser Trim Connector Kit for Alpha One, Alpha One Gen II, Brav...
MerCruiser Trim Connector Kit for Alpha One, Alpha One Gen II, Bravo, MC-1, R & MR – 1983 & Up – Replaces 98825A4 is backordered and will ship as soon as it is back in stock.
Product Details
This MerCruiser Trim Connector Kit is designed for the hydraulic trim system on selected MerCruiser MC-1, R, MR, Alpha One, Alpha One Gen II and Bravo stern-drive applications from 1983 and up. It provides the trim connector components needed to connect the hydraulic trim lines and help restore a properly sealed installation.
The kit is catalog-listed as a replacement for Mercury OEM part number 98825A4. Related catalog references include GLM 21970 and Mercury/Quicksilver 8M0080805. Confirm the original connector, mounting arrangement and part-number reference before ordering.
- Connects hydraulic trim lines at the stern-drive transom assembly.
- Supplies the connector, sealing and mounting components used for the installation.
- Includes gaskets, lockwashers and mounting hardware as listed below.
Part Number Matrix
Use these references to compare the kit with your existing trim connector assembly. Catalog references are provided for identification and should be confirmed against the original part before installation.
| Brand or Source | Part Number | Reference Type |
|---|---|---|
| Mercury | 98825A4 | OEM reference for the trim connector kit |
| GLM | 21970 | Aftermarket catalog reference |
| Mercury/Quicksilver | 8M0080805 | Catalog-listed trim connector kit reference |
| Mercury | 27-98823-1 | Hydraulic gasket component reference |
| Mercury | 27-99506-1 | Connector cover gasket component reference |
| Mercury | 10-28668 | Screw component reference |
| Mercury | 13-78968 | Lockwasher component reference |
Engine & Model Compatibility
The catalog application covers the following MerCruiser stern-drive families. Model designations, production year and transom configuration must be checked against the original assembly before purchase.
| Brand | Model or Drive Family | Years | OEM Reference | Application |
|---|---|---|---|---|
| MerCruiser | MC-1 | 1983 and up | 98825A4 | Hydraulic trim connector kit |
| MerCruiser | R | 1983 and up | 98825A4 | Hydraulic trim connector kit |
| MerCruiser | MR | 1983 and up | 98825A4 | Hydraulic trim connector kit |
| MerCruiser | Alpha One | 1983 and up | 98825A4 | Hydraulic trim connector kit |
| MerCruiser | Alpha One Gen II | 1983 and up | 98825A4 | Hydraulic trim connector kit |
| MerCruiser | Bravo | 1983 and up | 98825A4 | Hydraulic trim connector kit |
Technical Specs
- Product Type
- Hydraulic trim connector kit
- Installation
- Stern-drive trim system connection
- Connection
- Hydraulic trim-line connection at the transom assembly
- Application
- MerCruiser MC-1, R, MR, Alpha One, Alpha One Gen II and Bravo applications listed above
- Primary OEM Reference
- 98825A4
- Fitting Type
- Trim connector/manifold assembly with gasket and mounting hardware
What’s in the Box
- 1 x Plate
- 1 x Junction block body
- 2 x Gaskets
- 2 x Lockwashers
- 2 x Mounting bolts
Installation Notes
- Disconnect the boat's battery and ensure the stern drive is in a safe, supported position.
- Relieve any hydraulic pressure from the trim system according to the applicable service manual.
- Carefully disconnect the hydraulic lines from the old connector assembly. Have suitable rags ready to catch residual fluid.
- Unbolt and remove the old connector block and plate from the transom assembly.
- Thoroughly clean the mounting surface so the replacement gasket can seal correctly.
- Position the gasket, connector plate and junction block body in the same orientation as the original assembly.
- Install the supplied mounting bolts and lockwashers, then tighten them to the manufacturer's specified torque.
- Reconnect the hydraulic trim lines using suitable line wrenches to avoid damaging the fittings.
- Reconnect the battery, fill the trim-fluid reservoir as required and bleed the system according to the service manual.
- Operate the trim system through its range and inspect every connection for leaks before returning the boat to service.
Troubleshooting & FAQ
How do I know if my trim connector is failing?
Common signs include hydraulic-fluid leaks around the transom connector, a spongy or unresponsive trim system, difficulty maintaining the drive's trim position, or visible corrosion, cracking or damage to the original connector and gasket surfaces.
Will this fit every MerCruiser Alpha or Bravo drive?
No. The catalog application covers MC-1, R, MR, Alpha One, Alpha One Gen II and Bravo applications from 1983 and up. Confirm the exact drive family, year, original connector configuration and OEM reference before ordering. Earlier or otherwise unlisted applications may use different connector or gasket arrangements.
Are the gaskets and mounting hardware included?
Yes. This listing includes the plate, junction block body, gaskets, lockwashers and mounting bolts listed in the package contents. Replace sealing components during installation and do not reuse damaged or distorted hardware.
Do I need special tools for installation?
Standard mechanical tools, including a socket or wrench set and a torque wrench, are typically required. Line wrenches are recommended for the hydraulic fittings to help prevent rounding. Always follow the applicable MerCruiser service manual for bleeding procedures and torque values.
Is this an OEM part?
This listing is for an aftermarket replacement kit. It is catalog-listed for the OEM reference shown above and is not sold as a genuine Mercury-branded component.
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 when the item is unused and in its original condition. See our policy page or contact support for instructions.
Safety & Important Info
- Verify the original part number, connector configuration and mounting arrangement before purchase.
- Do not rely on model name alone; confirm the specific drive family and production year.
- This is an aftermarket replacement, not a genuine OEM component.
- Hydraulic trim systems can retain pressure. Use the applicable service manual and follow safe pressure-relief and bleeding procedures.
- Professional installation is recommended when working on the stern-drive hydraulic system.
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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