Engine Mount Damper, Lower Side – Fits Yamaha 40–55 HP (Replaces 62Y-44555-00-00)
Engine Mount Damper, Lower Side – Fits Yamaha 40–55 HP (Replaces 62Y-44555-00-00) 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).
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Engine Mount Damper, Lower Side – Fits Yamaha 40–55 HP (Replaces 62...
Product Details
This replacement Engine Mount Damper, Lower Side is designed for a range of Yamaha 40–55 HP, 2-Stroke and 4-Stroke outboard engines manufactured between 1990 and 2000. It serves as a critical anti-vibration component, absorbing engine vibrations to ensure smoother operation and reduce stress on the mounting brackets and vessel hull.
It directly replaces Yamaha OEM part numbers 62Y-44555-00-00, 62Y-44555-00-94, 670-44555-00-94, 679-44555-00-94, and 679-44555-00-00, ensuring a precise fit for compatible models.
- Installs on the lower side of the engine mounting bracket.
- Made from durable, vibration-absorbing rubber to withstand the marine environment.
- Essential for maintaining engine alignment and reducing harmonic vibration.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket parts.
| Brand | Part Number | Notes |
|---|---|---|
| Yamaha | 62Y-44555-00-00 | Current primary part number. |
| Yamaha | 62Y-44555-00-94 | Interchangeable part number. |
| Yamaha | 670-44555-00-94 | Superseded by 62Y-44555-00-00. |
| Yamaha | 679-44555-00-94 | Interchangeable part number. |
| Yamaha | 679-44555-00-00 | Interchangeable part number. |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This damper is designed specifically for the compatible Yamaha models listed, which include popular 2-stroke and 4-stroke platforms.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | E48CM | 40-48 | 2-Stroke | 1990–2000 | 62Y-44555-00-00 | Supersedes 670-44555-00-94 |
| Yamaha | E55CM | 55 | 2-Stroke | 1990–2000 | 62Y-44555-00-00 | Supersedes 670-44555-00-94 |
| Yamaha | F40 | 40 | 4-Stroke | 1990–2000 | 62Y-44555-00-00 | Supersedes 670-44555-00-94 |
| Yamaha | F50 | 50 | 4-Stroke | 1990–2000 | 62Y-44555-00-00 | Supersedes 670-44555-00-94 |
Technical Specs
- Product Type
- Engine Mount Damper
- Installation
- Lower Side
- Housing Material
- Rubber
- Housing Color
- Black
- Product Dimensions
- 12.0" L x 9.5" W x 4.0" H
- Other Technical Attributes
- Anti-vibration component for engine mounting
What’s in the Box
- 1 x Mount Damper, Lower Side (62Y-44555-00-00)
Installation Notes
- Disconnect the battery and ensure the engine is securely supported before beginning work.
- Locate the lower engine mount brackets. Access may require removing the lower cowlings.
- Remove the bolts securing the old lower mount damper. Note the orientation of all hardware.
- Remove the old damper. It may be tight and require gentle prying. Clean the mounting surfaces of any corrosion or debris.
- Install the new damper, ensuring it is correctly seated.
- Loosely thread all bolts, then torque them to the manufacturer's specified values found in your service manual. Do not overtighten.
- Re-assemble any removed components and reconnect the battery.
Troubleshooting & FAQ
What are the signs of a failing engine mount damper?
Common symptoms include excessive engine vibration felt through the boat hull, increased engine noise during operation, unusual thuds when shifting gears, or visible cracks, perishing, or deformation of the rubber material on the mount.
Is this the upper or lower mount damper?
This is the lower side engine mount damper. While it can be replaced independently, it is often best practice to inspect and, if necessary, replace the upper mounts at the same time to ensure balanced vibration absorption.
How can I confirm this part fits my specific engine?
The most reliable method is to match your existing part number to one of the cross-references in our Part Number Matrix. Additionally, verify your engine's model and manufacturing year against our Engine Compatibility table.
What is the main function of this damper?
The damper isolates vibrations produced by the running engine, preventing them from transferring to the boat's structure. This leads to a smoother, quieter ride and reduces mechanical stress on the transom and other components.
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.
Payment & Security
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