Power Trim/Tilt Cylinder End Cap with Seals – Fits Yamaha 60-90 HP (Replaces 6H1-43821-11-00, 6H1-43821-10-00)
Power Trim/Tilt Cylinder End Cap with Seals – Fits Yamaha 60-90 HP (Replaces 6H1-43821-11-00, 6H1-43821-10-00) is backordered and will ship as soon as it is back in stock.
Worry-free returns
Worry-free returns
Shop with confidence. If you’re not completely satisfied, eligible items may be returned within the return window, provided they are unused and in original packaging.
If the return is due to our error or a defective item, we’ll make it right.
Please contact us before returning any item.
Delivery and Shipping
Delivery and Shipping
Orders are typically processed within 1–2 business days.
U.S. orders usually arrive within 6–15 days, depending on stock location and destination.
International delivery times may vary due to customs processing.
Tracking information will be provided once your order ships.
Power Trim/Tilt Cylinder End Cap with Seals – Fits Yamaha 60-90 HP ...
Power Trim/Tilt Cylinder End Cap with Seals – Fits Yamaha 60-90 HP (Replaces 6H1-43821-11-00, 6H1-43821-10-00) is backordered and will ship as soon as it is back in stock.
Product Details
This is a replacement Power Trim/Tilt Cylinder End Cap with Seals designed to fit a range of Yamaha outboard motors from 60 HP to 90 HP, including various 2-stroke and 4-stroke models in the 60TLR, 70TLR, and 90TLR series from approximately 2000 to 2004. Constructed from high-strength, hard-anodized aluminum, it provides a durable solution for repairing leaking or damaged hydraulic trim cylinders.
It serves as a direct replacement for Yamaha OEM part numbers 6H1-43821-11-00, 6H1-43821-11, 6H1-43821-10-00, and 6H1-43821-10.
- Engineered for a direct screw-in cylinder installation.
- Features a Military Grade Type 3 Hard Coating for superior corrosion resistance and durability in marine environments.
- Comes as a complete assembly with all necessary seals for a comprehensive repair.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yamaha | 6H1-43821-11-00 |
| Yamaha | 6H1-43821-11 |
| Yamaha | 6H1-43821-10-00 |
| Yamaha | 6H1-43821-10 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | Rated HP | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|
| Yamaha | 60TLR | 60 | 6H1-43821-11-00 | Base model | |
| Yamaha | 60TLRA | 60 | 2002 | 6H1-43821-11-00 | |
| Yamaha | 60TLRB | 60 | 2003 | 6H1-43821-11-00 | |
| Yamaha | 60TLRC | 60 | 2004 | 6H1-43821-11-00 | |
| Yamaha | 60TLRNC | 60 | 2004 | 6H1-43821-11-00 | |
| Yamaha | 60TLRZ | 60 | 2001 | 6H1-43821-11-00 | |
| Yamaha | C60TLRY | 60 | 2000 | 6H1-43821-11-00 | |
| Yamaha | C60TLRZ | 60 | 2001 | 6H1-43821-11-00 | |
| Yamaha | P60TLHQ | 60 | 1992 | 6H1-43821-11-00 | |
| Yamaha | 70TLR | 70 | 6H1-43821-11-00 | Base model | |
| Yamaha | 70TLRC | 70 | 2004 | 6H1-43821-11-00 | |
| Yamaha | 70TLRNC | 70 | 2004 | 6H1-43821-11-00 | |
| Yamaha | 70TLRY | 70 | 2000 | 6H1-43821-11-00 | |
| Yamaha | 70TLRZ | 70 | 2001 | 6H1-43821-11-00 | |
| Yamaha | 90TLR | 90 | 6H1-43821-11-00 | Base model | |
| Yamaha | 90TJRZ | 90 | 2001 | 6H1-43821-11-00 | |
| Yamaha | 90TLRA | 90 | 2002 | 6H1-43821-11-00 | |
| Yamaha | 90TLRB | 90 | 2003 | 6H1-43821-11-00 | |
| Yamaha | 90TLRC | 90 | 2004 | 6H1-43821-11-00 | |
| Yamaha | 90TLRY | 90 | 2000 | 6H1-43821-11-00 |
Technical Specs
- Product Type
- Power Trim/Tilt Cylinder End Cap with Seals
- Installation
- Screw-in cylinder end cap assembly
- Connection
- Direct replacement for Yamaha trim/tilt hydraulic cylinders
- Housing Material
- Aircraft Grade Aluminum with Hard Anodized Coating
- Housing Color
- Silver/Metallic
- Weight
- 74.8 g (2.64 ounces)
- Fitting Type
- Screw-in hydraulic end cap
- Other Technical Attributes
- Military Grade Type 3 Hard Coating for corrosion resistance and durability
What’s in the Box
- 1 x Power Trim/Tilt Cylinder End Cap Assembly (6H1-43821-11-00/6H1-43821-10-00)
- 1 x Included seal kit for a complete installation
Installation Notes
- Lower the outboard motor completely and engage the trailering bracket or tilt lock for safety.
- Place a drain pan under the trim unit to catch any hydraulic fluid.
- Thoroughly clean the area around the cylinder end cap to prevent contamination.
- Carefully relieve any residual hydraulic pressure according to your service manual.
- Using a compatible pin wrench tool, unscrew and remove the old cylinder end cap.
- Remove the old cap and its seals from the piston rod, noting their orientation.
- Clean the cylinder bore and threads, inspecting for any scoring or damage.
- Lightly lubricate the new seals with fresh hydraulic fluid and install them onto the new end cap.
- Carefully thread the new end cap assembly into the cylinder and tighten to the manufacturer's recommended torque specification.
- Refill and bleed the hydraulic system as outlined in your outboard's service manual to remove all air.
- Operate the trim/tilt system multiple times and inspect for any leaks before returning to service.
Troubleshooting & FAQ
How can I confirm this end cap fits my specific Yamaha model?
The surest way is to match your existing part number to one of the direct replacements: 6H1-43821-11-00, 6H1-43821-11, 6H1-43821-10-00, or 6H1-43821-10. Additionally, check your exact engine model and year against our compatibility table.
What are common symptoms of a failing cylinder end cap?
The most common signs are visible hydraulic fluid leaks around the end of the trim cylinder, a slow or "spongy" trim/tilt response, or the motor slowly "drifting" down from a tilted position. These indicate a failed seal.
Is a special tool required for installation?
Yes, a pin wrench tool is required to properly engage the holes on the cap for removal and installation. Using improper tools like a punch and hammer can damage the cap or cylinder and is not recommended.
dDo I need to replace the seals when replacing the cap?
Absolutely. This kit includes all the necessary seals for the end cap. Never reuse old seals, as they are crucial for preventing leaks and maintaining hydraulic pressure. Always install the new seals provided with the new cap.
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.
