Connecting Rod Bearing – Fits Yamaha 48–90 HP Outboard Engines (Replaces 93310-730V8, 93310-730V6)
Connecting Rod Bearing – Fits Yamaha 48–90 HP Outboard Engines (Replaces 93310-730V8, 93310-730V6) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Connecting Rod Bearing – Fits Yamaha 48–90 HP Outboard Engines (Rep...
Product Details
This aftermarket Connecting Rod Bearing – Fits Yamaha 48–90 HP Outboard Engines (Replaces 93310-730V8, 93310-730V6) is a crucial component for ensuring smooth engine operation. It is designed for a wide range of Yamaha 2-stroke outboard models from 48 HP to 90 HP, manufactured between 1984 and 2006.
This part serves as a direct replacement for Yamaha OEM part numbers 93310-730V8-00, 93310-730V6-00, 93310-730A2-00, and Sierra part 18-4077.
- Installation: Fits within the engine crankshaft assembly as the big-end bearing on the connecting rod.
- Bearing Type: Single-row KT needle roller bearing for high-load capacity.
- Engine Compatibility: Gasoline (petrol) 2-stroke outboard engines.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yamaha | 93310-730V8-00 |
| Yamaha | 93310-730V6-00 |
| Yamaha | 93310-730A2-00 |
| Sierra | 18-4077 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This bearing is compatible with a wide range of Yamaha 2-stroke outboard engines. Verify your specific model for a correct fit.
| Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|
| 90ETLN, 90ETXN | 90 | 2-Stroke | 1984 | 93310-730V8 | Used on crankshaft/piston |
| 90ETLK | 90 | 2-Stroke | 1985 | 93310-730V8 | Used on crankshaft/piston |
| 90ETLJ, 90ETLJ-JD | 90 | 2-Stroke | 1986 | 93310-730V8 | Used on crankshaft/piston |
| 90ETLH, 90ETLH-JD | 90 | 2-Stroke | 1987 | 93310-730V8 | Used on crankshaft/piston |
| 90ETLG, 90ETLG-JD | 90 | 2-Stroke | 1988 | 93310-730V8 | Used on crankshaft/piston |
| 90ETLF, 90ETLF-JD | 90 | 2-Stroke | 1989 | 93310-730V8 | Used on crankshaft/piston |
| CV55ELF | 55 | 2-Stroke | 1989 | 93310-730V8 | Used on crankcase/cylinder |
| CV85ELF | 85 | 2-Stroke | 1989 | 93310-730V8 | Used on crankshaft/piston |
| 90ETLD, 90ETLD-JD, 90ETLDA | 90 | 2-Stroke | 1990 | 93310-730V8 | Used on crankshaft/piston |
| CV55ELD | 55 | 2-Stroke | 1990 | 93310-730V8 | Used on crankcase/cylinder |
| CV85ELD, CV85ETLD | 85 | 2-Stroke | 1990 | 93310-730V8 | Used on crankshaft/piston |
| 90TJRP, 90TLRP | 90 | 2-Stroke | 1991 | 93310-730V8 | Used on crankshaft/piston |
| C55ELRP | 55 | 2-Stroke | 1991 | 93310-730V8 | Used on crankcase/cylinder |
| C85TLRP | 85 | 2-Stroke | 1991 | 93310-730V8 | Used on crankshaft/piston |
| 90TJRQ, 90TLRQ | 90 | 2-Stroke | 1992 | 93310-730V8 | Used on crankshaft/piston |
| C55ELRQ | 55 | 2-Stroke | 1992 | 93310-730V8 | Used on crankcase/cylinder |
| C85TLRQ | 85 | 2-Stroke | 1992 | 93310-730V8 | Used on crankshaft/piston |
| 90TJRR, 90TLRR | 90 | 2-Stroke | 1993 | 93310-730V8 | Used on crankshaft/piston |
| C55ELRR, C55TLRR | 55 | 2-Stroke | 1993 | 93310-730V8 | Used on cylinder/crankcase |
| C85TLRR | 85 | 2-Stroke | 1993 | 93310-730V8 | Used on crankshaft/piston |
| 90TJRS, 90TLRS | 90 | 2-Stroke | 1994 | 93310-730V8 | Used on crankshaft/piston |
| C55ELRS, C55TLRS | 55 | 2-Stroke | 1994 | 93310-730V8 | Used on cylinder/crankcase |
| C75TLRS, C85TLRS | 75, 85 | 2-Stroke | 1994 | 93310-730V8 | Used on crankshaft/piston |
| 90TJRT, 90TLRT | 90 | 2-Stroke | 1995 | 93310-730V8 | Used on crankshaft/piston |
| C55ELRT, C55ERT, C55TLRT, C55TRT | 55 | 2-Stroke | 1995 | 93310-730V8 | Used on cylinder/crankcase |
| C75TLRT, C85TLRT | 75, 85 | 2-Stroke | 1995 | 93310-730V8 | Used on crankshaft/piston |
| E48MLHT | 48 | 2-Stroke | 1995 | 93310-730V8 | Used on cylinder/crankcase |
| E75MLHT | 75 | 2-Stroke | 1995 | 93310-730V8 | Used on crankshaft/piston |
| 90TJRU, 90TLRU | 90 | 2-Stroke | 1996 | 93310-730V8 | Used on crankshaft/piston |
| C75TLRU, C85TLRU | 75, 85 | 2-Stroke | 1996 | 93310-730V8 | Used on crankshaft/piston |
| E48MLHU | 48 | 2-Stroke | 1996 | 93310-730V8 | Used on cylinder/crankcase |
| E75MLHU, P75TLHU | 75 | 2-Stroke | 1996 | 93310-730V8 | Used on crankshaft/piston |
| 90TJRV, 90TLRV, B90TLRV | 90 | 2-Stroke | 1997 | 93310-730V8 | Used on crankshaft/piston |
| C80TLRV, C90TLRV | 80, 90 | 2-Stroke | 1997 | 93310-730V8 | Used on crankshaft/piston |
| E48MLHV | 48 | 2-Stroke | 1997 | 93310-730V8 | Used on cylinder/crankcase |
| E75MLHV, P75TLHV | 75 | 2-Stroke | 1997 | 93310-730V8 | Used on crankshaft/piston |
| C75TLRW | 75 | 2-Stroke | 1998 | 93310-730V8 | Used on crankshaft/piston |
| E48MLHW | 48 | 2-Stroke | 1998 | 93310-730V8 | Used on cylinder/crankcase |
| C75TLRX | 75 | 2-Stroke | 1999 | 93310-730V8 | Used on crankshaft/piston |
| E48MLHX | 48 | 2-Stroke | 1999 | 93310-730V8 | Used on cylinder/crankcase |
| 90TJRY, 90TLRY | 90 | 2-Stroke | 2000 | 93310-730V8 | Used on crankshaft/piston |
| C90TLRY | 90 | 2-Stroke | 2000 | 93310-730V8 | Used on crankshaft/piston |
| E48MLHY | 48 | 2-Stroke | 2000 | 93310-730V8 | Used on cylinder/crankcase |
| E75MLHY | 75 | 2-Stroke | 2000 | 93310-730V8 | Used on crankshaft/piston |
| 90TJRZ, 90TLRZ, C90TLRZ | 90 | 2-Stroke | 2001 | 93310-730V8 | Used on crankshaft/piston |
| 90TLRA | 90 | 2-Stroke | 2002 | 93310-730V8 | Used on crankshaft/piston |
| 90TLRB | 90 | 2-Stroke | 2003 | 93310-730V8 | Used on crankshaft/piston |
| 90TLRC | 90 | 2-Stroke | 2004 | 93310-730V8 | Used on crankshaft/piston |
| 90TLRD | 90 | 2-Stroke | 2005 | 93310-730V8 | Used on crankshaft/piston |
| 90TLR | 90 | 2-Stroke | 2006 | 93310-730V8 | Used on crankshaft/piston |
Technical Specs
- Product Type
- Needle Roller Bearing (Connecting Rod)
- Installation Location
- Engine Crankshaft Assembly
- Application
- Big-end bearing on connecting rod
- Fuel Type
- Gasoline (Petrol)
- Housing Material
- Steel
- Housing Color
- Silver
- Product Dimensions
- 6.0 × 7.5 × 1.0
- Weight
- Approximately 0.02 kg (0.04 lbs)
- Precision Rating
- P0, P6, P5, P2
- Number of Rows
- Single row
- Bearing Type
- KT (Needle Roller)
- Operating Temperature
- -20°C to 120°C (-4°F to 248°F) [estimated]
- Warranty
- Varies by manufacturer (typically 1 year)
What’s in the Box
- 1 x Connecting Rod Bearing (93310-730V8-00)
Installation Notes
- Always consult your engine’s official service manual before beginning work.
- Disconnect the battery and take necessary safety precautions.
- Engine disassembly is required to access the crankshaft and connecting rods. This is a complex procedure.
- Carefully remove the old bearing, noting its orientation.
- Clean all surfaces of grease, oil, and debris before installing the new part.
- Lubricate the new bearing with appropriate 2-stroke engine oil before installation.
- Ensure the new bearing is seated correctly and reassemble components to the manufacturer's specified torque settings.
- Given the complexity, professional installation by a qualified marine mechanic is strongly recommended.
Troubleshooting & FAQ
How do I know if my connecting rod bearing is failing?
Common signs of a failing connecting rod bearing include a distinct knocking or tapping sound from the engine that increases with RPM, low oil pressure, or the presence of metal shavings in the engine oil. Immediate inspection is required to prevent catastrophic engine damage.
Can I replace just one bearing or should I replace them all?
While you can replace a single bearing, it is best practice to replace all connecting rod bearings at the same time during an engine rebuild. This ensures even wear and balance, prolonging the life of the engine.
Is any special tool required for installation?
Yes, installation requires specialized tools including a bearing press or driver, torque wrench, and potentially a crankcase splitter. This is not a typical DIY job and is best left to a professional mechanic.
What is the difference between a big-end and small-end bearing?
This is a big-end bearing, which connects the connecting rod to the crankshaft. The small-end bearing connects the rod to the piston. They are not interchangeable. This part (93310-730V8) is specifically for the big end.
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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