Trim Tilt Hydraulic Ram Cylinder Hose Kit – Fits MerCruiser Alpha One & Bravo I, II, III (Replaces 32-99904Q, 32-864589, 32-864588)

Trim Tilt Hydraulic Ram Cylinder Hose Kit – Fits MerCruiser Alpha One & Bravo I, II, III

This hydraulic hose kit is compatible with MerCruiser Alpha One (with 15-9/16" trim cylinders) and Bravo I, II, III, X, XR, XZ stern drives. Warning: This kit is NOT compatible with Alpha One Generation 2 models.

This kit provides a direct replacement for MerCruiser part numbers 32-99904Q, 32-864589, and 32-864588.

• Includes a complete set of 4 trim lines for both port and starboard trim cylinders.
• Features a durable, braided stainless steel outer layer for enhanced protection against abrasion and the elements.
• Designed for direct replacement with OEM-compatible fittings for a secure, leak-free installation.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below.

Technical Specifications

Package Contents

• 2x Power Trim Hose (Replaces OEM 32-99904Q)
• 1x Power Trim Hose (Replaces OEM 32-864589)
• 1x Power Trim Hose (Replaces OEM 32-864588)
• Total: Complete set of 4 hoses for a full stern drive service.

Installation Guide

1. Safety First: Disconnect the battery and wear appropriate safety glasses before beginning.
2. Relieve Pressure: Relieve all hydraulic pressure from the trim system. Consult your engine's service manual for the correct procedure.
3. Access Hoses: Position the stern drive to allow for easy access to the trim cylinder hose connections.
4. Prepare Workspace: Place an oil-absorbent pad or container under the work area to catch any hydraulic fluid.
5. Disconnect Old Hoses: Carefully disconnect the old hydraulic hoses from both the trim cylinders and the pump manifold.
6. Note Routing: Pay close attention to the path of each hose before removal to ensure correct installation of the new set.
7. Install New Hoses: Connect the new hoses, ensuring all fittings are correctly threaded and securely tightened to service manual specifications. Do not overtighten.
8. Refill Fluid: Fill the hydraulic fluid reservoir to the manufacturer's recommended level using the proper fluid type.
9. Bleed System: Reconnect the battery. Cycle the trim and tilt system up and down several times to bleed air from the lines.
10. Final Check: Check all fittings and connections for leaks. Top off the fluid reservoir as needed after bleeding the system.

Troubleshooting & FAQ

How do I confirm this hose kit fits my engine?
This kit is designed for MerCruiser Alpha One stern drives equipped with 15-9/16" trim cylinders and all MerCruiser Bravo models (I, II, III, X, XR, XZ). It is critically important to confirm your model and cylinder size before ordering, as this kit will not fit Alpha One Generation 2 drives.

What are the signs my existing trim hoses need replacement?
Common indicators of failure include visible cracks, brittleness, or blistering on the hose exterior, fluid leaks at the fittings, or a spongy and unresponsive trim system performance.

Is this a complete kit for both sides of the stern drive?
Yes, this is a complete set of four hoses. It includes all lines required to service both the port (left) and starboard (right) trim cylinders on a single stern drive.

What is the benefit of the braided stainless steel housing?
The braided stainless steel outer layer provides superior resistance to abrasion, ozone, UV light, and physical damage compared to standard rubber hoses, which helps extend the service life of the component in a harsh marine environment.

OEM vs. Aftermarket?
This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

How fast do you ship and how much does it cost?
We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

What is your warranty and return policy?
This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.