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.
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Delivery and Shipping
Delivery and Shipping
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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 replacement Power Trim/Tilt Cylinder End Cap with Seals is designed for selected Yamaha outboard trim/tilt hydraulic cylinders used with 60 HP, 70 HP, and 90 HP models, including the 60TLR, 70TLR, and 90TLR model families listed below. Constructed from high-strength, hard-anodized aluminum, it provides a replacement solution for a leaking or damaged hydraulic trim-cylinder end cap.
This aftermarket replacement is listed for Yamaha OEM part numbers 6H1-43821-11-00, 6H1-43821-11, 6H1-43821-10-00, and 6H1-43821-10. Confirm the part number and exact engine model before ordering.
- Designed for screw-in cylinder-end-cap installation.
- Features a Type III hard-anodized coating for improved corrosion resistance and durability in marine environments.
- Supplied as an end-cap assembly with seals for the listed repair application.
Part Number Matrix
Use the following matrix to compare the listed Yamaha OEM references with your existing part.
| Brand | Part Number |
|---|---|
| Yamaha | 6H1-43821-11-00 |
| Yamaha | 6H1-43821-11 |
| Yamaha | 6H1-43821-10-00 |
| Yamaha | 6H1-43821-10 |
Engine & Model Compatibility
Check the exact model designation and year of your outboard against the table before purchasing. Model-family or horsepower matching alone is not sufficient confirmation of fitment.
| Brand | Model | Rated HP | Year | OEM Part No. | Notes |
|---|---|---|---|---|---|
| Yamaha | 60TLR | 60 | Not specified | 6H1-43821-11-00 | Base model designation |
| 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 | Not specified | 6H1-43821-11-00 | Base model designation |
| 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 | Not specified | 6H1-43821-11-00 | Base model designation |
| 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
- Replacement end cap for compatible 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
- Coating
- Type III hard coating for corrosion resistance and durability
What’s in the Box
- 1 x Power trim/tilt cylinder end cap assembly
- 1 x Seal kit for the end-cap repair
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 hydraulic fluid.
- Thoroughly clean the area around the cylinder end cap to prevent contamination.
- Relieve residual hydraulic pressure according to the applicable service manual.
- Use a compatible pin-wrench tool to unscrew and remove the old cylinder end cap.
- Remove the old cap and seals, noting the orientation of each seal.
- Clean the cylinder bore and threads, and inspect them for scoring or damage.
- Lightly lubricate the replacement seals with fresh hydraulic fluid and install them on the new end cap.
- Carefully thread the replacement end-cap assembly into the cylinder and tighten it to the manufacturer’s recommended torque specification.
- Refill and bleed the hydraulic system as directed by the outboard service manual.
- Operate the trim/tilt system several times and inspect for leaks before returning the outboard to service.
Troubleshooting & FAQ
How can I confirm this end cap fits my specific Yamaha model?
Match the part number on your existing end cap with one of the listed Yamaha references: 6H1-43821-11-00, 6H1-43821-11, 6H1-43821-10-00, or 6H1-43821-10. Then compare the complete engine model and year with the compatibility table. If the part number, model, or cylinder configuration does not match, consult the applicable service information before ordering.
What are common symptoms of a failing cylinder end cap?
Common symptoms include visible hydraulic-fluid leakage around the end of the trim cylinder, slow or spongy trim/tilt operation, or the outboard drifting down from a tilted position. These symptoms can have multiple causes, so inspect the complete hydraulic system before replacing the end cap.
Is a special tool required for installation?
Yes. A suitable pin-wrench tool is required to engage the holes in the end cap during removal and installation. Improper tools, such as a punch and hammer, can damage the cap or cylinder and are not recommended.
Do I need to replace the seals when replacing the cap?
Replacing the seals is recommended when servicing the end cap. This listing includes a seal kit for the stated repair application. Install the seals correctly and do not reuse damaged, hardened, or deformed seals.
Is this an OEM part?
No. This listing is for an aftermarket replacement corresponding to the Yamaha part numbers shown above. It is not manufactured or sold by Yamaha.
Shipping speed and cost
Typical transit is 5–15 days. Standard shipping is free, and expedited options may be shown at checkout where available.
Warranty and returns
This product is covered by a 1-year warranty against manufacturing defects under normal use. Returns are accepted within the standard return window when the item is unused and in its original condition. Contact support for return instructions.
Safety & Important Information
- Verify the part number, model, year, cylinder configuration, and product dimensions against your original part before ordering.
- This is an aftermarket replacement, not an OEM Yamaha component.
- Hydraulic trim/tilt systems can contain pressurized fluid. Follow the applicable service manual and use appropriate personal protective equipment.
- Professional installation is recommended for safe and reliable operation.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered for demanding real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing with attention to materials and quality control.
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