Upper Seal Gasket – Fits Suzuki DF40/DF50 Outboards (Replaces 11433-87J00)
Upper Seal Gasket – Fits Suzuki DF40/DF50 Outboards (Replaces 11433-87J00) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Upper Seal Gasket – Fits Suzuki DF40/DF50 Outboards (Replaces 11433...
Product Details
This Upper Seal Gasket provides a reliable seal for the upper oil seal housing on Suzuki DF40 and DF50 four-stroke outboard motors manufactured from 1999 to 2010. It is engineered to prevent oil leaks and ensure engine integrity.
It serves as a direct aftermarket replacement for Suzuki OEM part number 11433-87J00.
- Installs between the cylinder block and the upper oil seal housing.
- Designed as a direct-fit component for straightforward installation.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Suzuki | 11433-87J00 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Suzuki engines, this part is compatible with specific DF40 and DF50 models from the 1999–2010 production years.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. |
|---|---|---|---|---|---|
| Suzuki | DF40 | 40 | 4-Stroke | 1999–2010 | 11433-87J00 |
| Suzuki | DF50 | 50 | 4-Stroke | 1999–2010 | 11433-87J00 |
Technical Specs
- Product Type
- Upper Oil Seal Housing Gasket
- Installation
- Positioned between the cylinder block and upper oil seal housing
- Fitting Type
- Direct Fit
- Dimensions
- 9.0" L x 7.0" W x 0.2" H
- Other Technical Attributes
- Also known as "Gasket, Under Oil Seal HSG"
What’s in the Box
- 1 x Upper Seal Gasket (11433-87J00)
Installation Notes
- Ensure the engine is off and cool, and disconnect the battery as a safety precaution.
- Drain engine oil if it can leak during the gasket replacement process.
- Carefully detach any components obstructing access to the upper oil seal housing. Note their order and position.
- Remove the old gasket. Thoroughly clean both mating surfaces to remove all old gasket material and residue.
- Place the new gasket into position, ensuring it is correctly aligned with all bolt holes and passages.
- Reassemble all components in reverse order, tightening bolts to the manufacturer's recommended torque specifications.
- Refill the engine oil to the correct level, reconnect the battery, and carefully inspect for any leaks after starting the engine.
Troubleshooting & FAQ
How do I verify this gasket fits my specific Suzuki model?
This gasket is designed for Suzuki DF40 and DF50 four-stroke outboards manufactured from 1999–2010. Always cross-reference the OEM part number (11433-87J00) listed in your engine's service manual with our compatibility table.
What are common signs that my original gasket has failed?
Symptoms of a failing upper oil seal housing gasket typically include visible oil leaks around the housing area, an unexplained drop in oil level, or oil contamination in the water. Poor engine performance can also be an indirect sign.
When should this gasket be replaced?
Gaskets like this do not have a fixed replacement interval. They should be replaced whenever the component they seal is removed for service, or if you detect signs of leaking or material degradation.
Is this a direct replacement for Suzuki OEM part 11433-87J00?
Yes, this part is manufactured to be a direct cross-reference for the Suzuki OEM part 11433-87J00. It is designed to match the form, fit, and function of the original component.
What is the difference between an OEM part and this aftermarket part?
This listing is for a high-quality aftermarket replacement, not an OEM component. It is engineered to meet or exceed OEM specifications using comparable materials and is manufactured in an ISO 9002 certified facility. Our parts undergo batch inspections to ensure consistent quality and performance.
How fast is shipping and what does it cost?
We offer fast worldwide shipping, with typical transit times of 5–15 days for most regions. Standard shipping is free. If available for your location, expedited shipping options and their costs will be presented at checkout.
What is the warranty and return policy?
This product is covered by a 1-year warranty against manufacturing defects under normal marine use. If you encounter any issues, please contact our support team with your order number. Returns of unused items in their original condition are accepted within our standard return window. For detailed instructions, please see our policy page or contact us directly.
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
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