Oil Seal Housing – Fits Yamaha 75-90 HP 2-Stroke Outboards (Replaces 6H1-15359-01-94)
Oil Seal Housing – Fits Yamaha 75-90 HP 2-Stroke Outboards (Replaces 6H1-15359-01-94) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Free standard shipping on all orders under 1 KG
Oil Seal Housing – Fits Yamaha 75-90 HP 2-Stroke Outboards (Replace...
Product Details
This high-quality Oil Seal Housing is designed as a direct-fit replacement for Yamaha 75-90 HP 2-stroke outboard engines manufactured between 1992 and 2017. It ensures a precise fit and reliable performance, protecting internal components from water and debris.
It serves as a direct interchange for Yamaha part number 6H1-15359-01-94.
- Engineered for direct OEM-style installation.
- Provides a durable, reliable seal to protect internal gearcase components.
- Built to withstand harsh marine environments.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yamaha | 6H1-15359-01-94 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | 75-90HP Outboard | 75-90 | 2-Stroke | 1992–2017 | 6H1-15359-01-94 |
Technical Specs
- Product Type
- Oil Seal Housing
- Installation
- Direct OEM replacement
- Product Dimensions
- 9.0" L x 9.0" W x 5.0" H
What’s in the Box
- 1x Housing, Oil Seal (Replaces 6H1-15359-01-94)
Installation Notes
- Ensure the engine is turned off and the battery is disconnected before starting work.
- Access the lower unit of the outboard. You may need to drain the gearcase oil.
- Carefully remove the old oil seal housing, taking note of the orientation of any seals.
- Thoroughly clean the mounting surface on the gearcase, removing any old gasket material or sealant.
- Install the new oil seal housing, ensuring it is seated correctly.
- Tighten all bolts and fasteners to the manufacturer's recommended torque specifications.
- Refill the gearcase with the correct type and amount of oil.
- Reconnect the battery and test the engine, checking for any leaks around the new housing.
Troubleshooting & FAQ
How do I confirm this housing fits my specific outboard model?
The best way is to verify your engine's model, horsepower, and year fall within the ranges listed in the "Engine & Model Compatibility" table. Cross-referencing the OEM part number 6H1-15359-01-94 with your service manual is also highly recommended.
What are the signs of a failing oil seal housing?
Common symptoms include visible oil leaks around the gearcase or propeller shaft, water intrusion into the lower unit oil (milky or cloudy appearance), or visible cracks, corrosion, or damage on the housing itself.
How often should this part be replaced?
The oil seal housing should be inspected during every regular lower unit service interval. It should be replaced immediately if any signs of wear, cracking, leaking, or damage are found. There is no fixed replacement schedule; its lifespan depends on usage, water conditions, and maintenance.
Do I need any special tools for installation?
While basic hand tools can complete much of the job, specialized tools like a seal puller and a seal driver may be necessary for removing the old seals and correctly installing the new ones without damage. Professional installation is recommended to ensure a proper fit and prevent leaks.
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.
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