Yamaha Connecting Rod Bearing – Fits Yamaha Outboard 48/55/60/75/80/90 HP (Replaces 93310-730V6, 93310-730V8, 93310-730A2)
Yamaha Connecting Rod Bearing – Fits Yamaha Outboard 48/55/60/75/80/90 HP (Replaces 93310-730V6, 93310-730V8, 93310-730A2) is backordered and will ship as soon as it is back in stock.
Couldn't load pickup availability
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
Yamaha Connecting Rod Bearing – Fits Yamaha Outboard 48/55/60/75/80...
Product Details
This is a replacement Yamaha Connecting Rod Bearing designed for 2-stroke, 3-cylinder Yamaha outboard engines rated between 48 HP and 90 HP. As a crucial internal engine component, it ensures smooth piston and crankshaft operation.
It is a direct replacement for Yamaha OEM parts 93310-730V6-00, 93310-730V8-00, and 93310-730A2-00, as well as Sierra 18-4077 and Asaki AM93310-730V8.
- Installation involves internal engine disassembly.
- Engineered as a cylindrical crankshaft bearing.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yamaha | 93310-730V6-00 |
| Yamaha | 93310-730V8-00 |
| Yamaha | 93310-730A2-00 |
| Sierra | 18-4077 |
| Asaki | AM93310-730V8 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Yamaha engines, this part fits specific 3-cylinder outboards. Check your engine's part number to ensure a match.
| Brand | Model | Rated HP | Stroke | OEM Part No. | Notes |
|---|---|---|---|---|---|
| Yamaha | 3-Cylinder | 48 | 2-Stroke | 93310-730V6-00 | Also 93310-730V8-00, 93310-730A2-00 |
| Yamaha | 3-Cylinder | 55 | 2-Stroke | 93310-730V6-00 | Also 93310-730V8-00, 93310-730A2-00 |
| Yamaha | 3-Cylinder | 60 | 2-Stroke | 93310-730V6-00 | Also 93310-730V8-00, 93310-730A2-00 |
| Yamaha | 3-Cylinder | 75 | 2-Stroke | 93310-730V6-00 | Also 93310-730V8-00, 93310-730A2-00 |
| Yamaha | 3-Cylinder | 80 | 2-Stroke | 93310-730V6-00 | Also 93310-730V8-00, 93310-730A2-00 |
| Yamaha | 3-Cylinder | 85 | 2-Stroke | 93310-730V6-00 | MarineSpareParts lists this HP |
| Yamaha | 3-Cylinder | 90 | 2-Stroke | 93310-730V6-00 | Also 93310-730V8-00, 93310-730A2-00 |
Technical Specs
- Product Type
- Connecting Rod Bearing
- Installation
- Internal Engine Component
- Other Technical Attributes
- Cylindrical/Crankshaft Bearing
- Dimensions (Box)
- 9.5" L x 8.0" W x 2.0" H
- Warranty
- Standard Manufacturer Warranty
What’s in the Box
- 1 x Bearing,cyl.#10 (93310-730V6-00/93310-730V8-00/93310-730A2-00)
Installation Notes
- Disconnect the battery and all fuel lines to prevent accidents. Drain the engine oil completely.
- Remove the powerhead from the midsection to access the engine block.
- Systematically disassemble the engine, removing the cylinder head and other components to expose the crankcase.
- Carefully unbolt the connecting rod cap for the target cylinder, noting the orientation of the bearing shells.
- Remove the old bearing halves from the rod and cap.
- Thoroughly clean the rod, cap, and crankshaft journal surfaces of any oil or debris.
- Liberally apply fresh engine assembly lube or motor oil to the new bearing shells and the crankshaft journal.
- Install the new bearing halves, ensuring they are correctly seated in the rod and cap.
- Reinstall the connecting rod cap and torque the bolts to the manufacturer's specified value.
- Reassemble the engine in the reverse order of disassembly.
- Refill with new engine oil, re-install the powerhead, and reconnect all systems.
- Before starting, prime the oil system if possible. Check for leaks and proper operation after startup.
Troubleshooting & FAQ
How do I know if my connecting rod bearing needs replacement?
Common signs include a distinct knocking or ticking sound from the engine (often called "rod knock"), which may change with RPM. Other symptoms are low oil pressure warnings or finding metallic, glitter-like particles in your engine oil during an oil change.
Will this bearing fit all Yamaha 3-cylinder engines?
This bearing is specifically made for Yamaha's 3-cylinder, 2-stroke outboard models rated from 48 HP to 90 HP. However, you must always verify compatibility by matching the OEM part number from your engine's service manual with the numbers listed here (93310-730V6, 93310-730V8, 93310-730A2).
What is the most common cause of bearing failure?
The primary cause of premature connecting rod bearing failure is oil starvation. This can result from a low oil level, a faulty oil pump, or contaminated oil that clogs passages. Engine overheating and sustained high-RPM operation can also contribute to excessive wear.
Can I replace just one bearing?
While you can replace a single failed bearing, it is best practice to replace all connecting rod bearings at the same time during an engine rebuild. This ensures consistent clearances, even wear, and long-term engine reliability, as other bearings have been subjected to the same operating conditions.
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
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
