Outboard Engine – Fits Yamaha 80HP (Replaces F80LB, F80D)
Outboard Engine – Fits Yamaha 80HP (Replaces F80LB, F80D) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
Orders are typically processed within 1–2 business days.
U.S. orders usually arrive within 6–15 days, depending on stock location and destination.
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Outboard Engine – Fits Yamaha 80HP (Replaces F80LB, F80D)
Outboard Engine – Fits Yamaha 80HP (Replaces F80LB, F80D) is backordered and will ship as soon as it is back in stock.
Product Details
This product is an aftermarket replacement for the Yamaha F80 4-Stroke outboard engine, part of the F80 Mid-Power series for models from 2017 onwards. It is an 80 horsepower, 16-valve SOHC in-line 4-cylinder engine featuring electronic fuel injection (EFI) for reliable performance.
No direct supersession or interchange data was available from the provided sources.
- Features a lightweight design with a power trim & tilt system.
- Compatible with Yamaha's digital network gauges.
- Engineered for remote control operation.
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | F80LB | 80 | 4-Stroke | 2017+ | F80DETL | Model code F80D also referenced |
| Yamaha | F80D | 80 | 4-Stroke | 2017+ | Same engine series, variation of F80LB |
Technical Specs
- Product Type
- Outboard Motor Engine
- Engine Type
- 16-Valve, SOHC, In-line 4-cylinder
- Displacement
- 1,832 cm³ (62 US fl oz)
- Bore × Stroke
- 81.0 mm × 88.9 mm (3.2 in × 3.5 in)
- Compression Ratio
- 10.0:1
- Max. Prop Shaft Output
- 58.8 kW (80 hp)
- Full Throttle Operating Range
- 5,000–6,000 rpm
- Idling Speed
- 750 ± 50 rpm
- Fuel Consumption
- 28.7 l/h @ 6,000 rpm
- Fuel Induction System
- Electronic Fuel Injection (EFI)
- Ignition System
- TCI Micro-computer
- Starting System
- Electric Starter
- Alternator Output
- 35 A (battery charge: 21 A)
- Cooling System
- Raw-water, thermostatically controlled
- Exhaust System
- Through propeller boss
- Lubrication System
- Wet sump
- Engine Oil Capacity
- 3.2/3.0 ℓ (with/without oil filter replacement)
- Gear Ratio
- 2.15 (28/13)
- Gear Oil Capacity
- 0.760 ℓ
- Weight
- 162 kg (357 lb), 166 kg (366 lb) depending on model
- Shaft Length
- L: 516 mm (20.3 inch)
- Boat Transom Height
- L: 508 mm
- Control System
- Remote Control
- Trim & Tilt System
- Power Trim & Tilt
Installation Notes
- Ensure the engine is off and the battery is disconnected before starting work.
- Carefully remove the old engine, disconnecting all fuel lines, electrical harnesses, and control cables.
- Clean and inspect the boat's transom for any damage or wear. Make repairs as needed.
- Mount the new engine securely onto the transom, following the manufacturer's torque specifications for bolts.
- Connect all fuel lines, electrical harnesses, and remote-control cables to the new engine.
- Fill the engine with the correct type and amount of oil and gear lube as specified.
- Reconnect the battery and test the engine's operation in a safe water environment, checking for leaks and proper function.
Troubleshooting & FAQ
What's the difference between the F80LB, F80D, and F80DETL models?
These model codes typically refer to minor variations of the same Yamaha F80 engine series. The differences can relate to shaft length, control type, or regional market specifications. All are functionally similar and fall within the same generation (2017+).
Is this engine compatible with digital network gauges?
Yes, the Yamaha F80 series from this era is designed for compatibility with digital network systems, allowing it to connect to modern multifunction displays for engine monitoring.
What are the signs that an old engine needs replacement?
Common signs include chronic starting issues, a significant loss of power, excessive smoke, persistent overheating, or internal mechanical failures like knocking sounds, which may be more costly to repair than to replace the unit.
What is the recommended maintenance interval for this engine?
While referring to the official service manual is best, a general guideline is to change the engine oil and filter every 100 hours of operation or annually, whichever comes first. Gear oil should also be inspected and changed on a similar schedule.
How can I confirm this engine will fit my boat?
Verify that your boat's transom height matches the engine's shaft length (L: 508 mm or 20 inches). Also, ensure your boat is rated to handle the engine's weight (approx. 166 kg or 366 lb) and horsepower.
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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