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Oil Seal (09289-20009) – Fits Suzuki Outboard 20-50 HP

Regular price $0.00
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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).

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Delivery and Shipping

Free standard shipping on all orders under 1 KG

If you have any questions, feel free to email us at info@sierramarines.com, and we’ll get back to you within 20–36 hours.

Product Details

This propeller shaft Oil Seal (09289-20009) is an essential component for maintaining the lower unit of Suzuki Marine Outboard engines. It is designed to fit a wide range of 20-50 HP 4-stroke models manufactured from 2000 to the present, preventing gearcase oil leaks and water intrusion.

It serves as a direct replacement for Suzuki OEM part number 09289-20009.

  • Installs on the propeller shaft in the lower unit.
  • Durable press-fit design with a rubber and metal construction.
  • Includes one oil seal as pictured.

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket.

Brand Part Number
Suzuki 09289-20009

Engine & Model Compatibility

Confirm your engine model/year in the table below.

Brand Model Rated HP Stroke Years OEM Part No. Notes
Suzuki DF20 20 4-Stroke 2000–Present 09289-20009
Suzuki DF25 25 4-Stroke 2000–Present 09289-20009
Suzuki DF25A 25 4-Stroke 2013–Present 09289-20009
Suzuki DF30 30 4-Stroke 2000–Present 09289-20009
Suzuki DF30A 30 4-Stroke 2013–Present 09289-20009
Suzuki DF40 40 4-Stroke 2000–Present 09289-20009
Suzuki DF50 50 4-Stroke 2000–Present 09289-20009

Technical Specs

Product Type
Oil Seal
Installation
Propeller Shaft / Lower Unit
Housing Material
Rubber with Metal Case
Housing Color
Black/Metallic
Dimensions
Height: 0.5; Width: 9.0; Length: 9.5;
Fitting Type
Press Fit
Other Technical Attributes
Built to OEM specifications

What’s in the Box

  • 1 x Oil Seal (09289-20009)

Installation Notes

  1. Drain the gearcase oil from the lower unit completely.
  2. Remove the propeller and associated thrust washer and hardware.
  3. Carefully remove the propeller shaft bearing housing assembly. Note the orientation of all components.
  4. Using a seal puller, gently extract the old oil seal from the housing, taking care not to scratch the housing surface.
  5. Clean the seal seating area thoroughly to remove any old sealant or corrosion.
  6. Lubricate the outer edge of the new oil seal with a light film of marine grease.
  7. Using a suitable driver or socket that matches the outer diameter of the seal, press the new seal into the housing until it is fully and evenly seated.
  8. Reassemble the bearing housing, propeller, and all other components in reverse order of removal, ensuring all parts are correctly aligned and torqued to manufacturer specifications.
  9. Refill the lower unit with the correct type and amount of new gear oil. Check for leaks before operation.

Troubleshooting & FAQ

Where is this oil seal installed?

This oil seal is specifically for the propeller shaft, located within the lower unit (gearcase) of the outboard motor. Its job is to keep gear oil in and water out.

What are the signs of a failed propeller shaft seal?

Common signs include visible gear oil leaking from around the propeller area, or discovering water in your gear oil (it will look milky or creamy) during a routine check. You might also notice fishing line tangled behind the prop, which can damage the seal.

Will this fit my Suzuki DF30A?

Yes, this seal is confirmed to fit the Suzuki DF30A and DF25A models from 2013 to the present, in addition to the other listed 20–50 HP models.

How often should this seal be replaced?

It is recommended to inspect the oil seals whenever you service the lower unit or change the gear oil (typically annually). Replace the seal immediately if you see any signs of wear, damage, cracking, or leakage.

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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