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Reverse Gear Washer – Fits Yamaha & Parsun 15HP Outboards (Replaces PAF15-06070007, 66M-45576-00)

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Reverse Gear Washer – Fits Yamaha & Parsun 15HP Outboards (Replaces PAF15-06070007, 66M-45576-00) is backordered and will ship as soon as it is back in stock.


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

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 Reverse Gear Washer – Fits Yamaha & Parsun 15HP Outboards (Replaces PAF15-06070007, 66M-45576-00) is a critical component for the reverse gear assembly in certain Yamaha and Parsun 15HP outboard engines. It's designed to provide proper spacing and reduce friction between moving components in the lower unit for both 2-stroke and 4-stroke models.

This part is a direct replacement for Yamaha part number 66M-45576-00 and Parsun part number PAF15-06070007.

  • Installation Location: Mounts within the lower unit/gearcase assembly.
  • Fitting Type: Designed for a secure press fit.
  • Included Essential: Package contains a single washer for a complete replacement.

Part Number Matrix

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

Brand Part Number
Yamaha 66M-45576-00
Parsun PAF15-06070007

Engine & Model Compatibility

Confirm your engine model/year in the table below.

For Yamaha engines, this washer is used in the reverse gear assembly on various 15HP models.

For Parsun engines, this component is compatible with both 2-stroke (T15) and 4-stroke (F15) 15HP variants.

Brand Model Rated HP Stroke Years OEM Part No. Notes
Yamaha 15HP Series 15 2-Stroke 66M-45576-00 Used in reverse gear assembly
Parsun F15 Series 15 4-Stroke PAF15-06070007 Compatible with multiple Yamaha engine variants
Parsun T15 Series 15 2-Stroke PAF15-06070007 Compatible with multiple Yamaha engine variants

Technical Specs

Product Type
Reverse Gear Washer
Installation Location
Lower Unit / Gearcase
Material
Metal (likely steel or brass)
Color
Silver/Metallic
Dimensions
10.0" (L) x 7.0" (W) x 0.2" (H)
Fitting Type
Press fit
Operating Temperature
Marine environment standard

What’s in the Box

  • 1 x Reverse Gear Washer (PAF15-06070007 / 66M-45576-00)

Installation Notes

  1. Disconnect the battery and ensure the engine is stable and secure before beginning work.
  2. Drain the gearcase oil completely into a suitable container.
  3. Disassemble the lower unit to access the reverse gear assembly, following your engine's official service manual.
  4. Carefully remove the old, worn washer, paying close attention to its position and orientation.
  5. Thoroughly clean the gear and all surrounding surfaces of any metal shavings, old lubricant, or debris.
  6. Install the new washer, ensuring it is properly seated and aligned according to the manual's specifications.
  7. Reassemble all gearcase components in the reverse order of disassembly, torquing bolts to spec.
  8. Refill the gearcase with the correct type and amount of fresh marine gear oil.
  9. Before starting the engine, manually check for proper gear engagement in forward, neutral, and reverse.

Troubleshooting & FAQ

How do I know if this washer fits my specific engine model year?

This washer fits a wide range of Yamaha and Parsun 15HP engines. While specific year ranges are extensive, compatibility is best confirmed by matching the OEM part number (66M-45576-00 for Yamaha, PAF15-06070007 for Parsun) to the one listed in your engine's service manual.

What are the signs of a failed reverse gear washer?

Symptoms can include difficulty shifting into or out of reverse, grinding noises from the lower unit, or an unusual amount of metal shavings in the gear oil during a change.

Is this a direct replacement for the OEM part?

Yes, it is designed to replace Yamaha 66M-45576-00 and Parsun PAF15-06070007 directly, with the same fitment and function as the original component.

When should this washer be replaced?

There is no strict replacement interval. This washer is typically replaced only when the lower unit is being serviced for other reasons (e.g., seal replacement, gear inspection) or if symptoms of failure appear.

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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