Connecting Rod Assembly – Fits Yamaha 48HP–85HP (Replaces 688-11650-03-00)
Connecting Rod Assembly – Fits Yamaha 48HP–85HP (Replaces 688-11650-03-00) 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
Connecting Rod Assembly – Fits Yamaha 48HP–85HP (Replaces 688-11650...
Product Details
This Connecting Rod Assembly is designed for a range of Yamaha 2-stroke outboard motors, including 48HP, 55HP, 75HP, and 85HP models manufactured between 1984 and 1996.
It serves as a direct replacement for Yamaha OEM part number 688-11650-03-00.
- Installation: Direct OEM replacement fit
- Material: High-strength steel housing
- Included Hardware: Comes with the necessary bearing and pin
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket suppliers.
| Brand | Part Number | Notes |
|---|---|---|
| Yamaha | 688-11650-03-00 | Used with 93310-730V8 bearing and 93603-21111 pin |
Engine & Model Compatibility
Confirm your engine model and year in the table below to ensure accurate fitment.
For Yamaha engines, please verify your specific model against this compatibility list.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | 688-11650-03-00 | 48–85 HP | 2-Stroke | 1984–1996 | 688-11650-03-00 | Used with 93310-730V8 bearing and 93603-21111 pin |
| Yamaha | 75A, 75AED, 75AET | 75 HP | 2-Stroke | 1984–1996 | 688-11650-03-00 | |
| Yamaha | 75EHD | 75 HP | 2-Stroke | 1984–1996 | 688-11650-03-00 | |
| Yamaha | 85A, 85AED, 85AET | 85 HP | 2-Stroke | 1984–1996 | 688-11650-03-00 | |
| Yamaha | 85AED-TUNA | 85 HP | 2-Stroke | 1984–1996 | 688-11650-03-00 | |
| Yamaha | 85AEHD | 85 HP | 2-Stroke | 1984–1996 | 688-11650-03-00 |
Technical Specs
- Product Type
- Connecting Rod Assembly
- Installation
- Direct OEM replacement
- Fuel Type
- Gasoline
- Housing Material
- Steel
- Dimensions
- 7.5" L × 1.25" W × 3.25" H
- Included Hardware
- Includes bearing and pin
What’s in the Box
- 1 x Connecting Rod Assembly (688-11650-03-00)
Installation Notes
Professional installation is highly recommended. The following are general, model-agnostic steps:
- Disconnect the battery and safely drain all engine fluids (oil, fuel).
- Remove the engine cover and powerhead assembly to access the cylinder block.
- Disassemble the engine block according to the service manual to expose the crankshaft.
- Carefully unbolt and remove the old connecting rod caps and assemblies from the crankshaft journal.
- Clean and inspect the crankshaft, journals, and cylinder for any scoring or damage.
- Lubricate the new bearing, pin, and all contact surfaces with fresh engine oil.
- Install the new connecting rod assembly onto the crankshaft, ensuring correct orientation.
- Torque all fasteners to the precise manufacturer-specified values using a torque wrench.
- Reassemble the engine with new gaskets and seals, then reinstall the powerhead.
- Refill engine fluids, reconnect the battery, and perform operational tests before returning to service.
Troubleshooting & FAQ
How can I confirm this part fits my Yamaha outboard?
The most reliable method is to cross-reference the OEM part number 688-11650-03-00 with your engine's service manual or the number stamped on your original part. While our compatibility table is accurate, always verify the part number to guarantee fitment.
What are the signs of a failing connecting rod?
The most common symptom is a repetitive metallic knocking or tapping sound from the engine, often called "rod knock," which may change with engine RPM. Other signs include a sudden loss of power, excessive vibration, or finding metal shavings in the engine oil during a change.
Does this assembly include the wrist pin and bearing?
Yes, this is a complete assembly that includes the connecting rod, crank pin, and needle bearing required for installation.
Is any special tooling required for this job?
Yes, replacing a connecting rod is an advanced repair. It requires specialized tools, including a torque wrench, flywheel puller, and potentially bearing presses, in addition to a full set of metric sockets and wrenches. Access to a manufacturer's service manual is essential.
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.
