Honda Marine 4-Stroke 80HP Outboard Engine Parts

(24 products)

This page is dedicated to Honda 4‑Stroke 80HP outboard engines. Use it to find compatible parts and service information, including maintenance tips, common replacement parts, and troubleshooting guidance. You can also browse the main Honda collection for a wider selection. Scroll to the bottom of the page to start browsing parts for this engine, and remember you can use the Filter & Sort controls on the collection page to narrow results by horsepower, year range, and part category/section.

Browse All Honda Parts

How to Identify Your 80HP Model

Nameplate location: Look for the aluminum serial/model plate on the transom bracket or swivel bracket. The same ID is usually repeated on a sticker under the engine cowling.
Model code and suffix: Honda outboard model codes typically indicate horsepower and version. Suffix letters/numbers often identify shaft length (S/L/X), control type (tiller vs. remote), and revision level. Match these when selecting parts.
Platform grouping: Many 80 HP units are part of Honda’s mid‑range family that includes BF75/BF90/BF100 in various markets. Some maintenance parts overlap, but verify by model code and serial.
4‑Stroke specifics: Expect engine oil and filter, separate gear oil in the lower unit, an external fuel filter, and a rubber impeller water pump in the gearcase.

Platform Overview

Mid‑Range Inline‑4 EFI (BF75/BF80/BF90/BF100 family)

Feature	Description
Configuration	Four‑stroke inline‑4 with electronic fuel injection (EFI); mid‑range outboard design.
Common Models	Often grouped with BF75/BF90/BF100 platforms; some markets include BF80. Many service items are shared, but always verify by serial.
Advantages	Good fuel economy, quiet operation, broad parts availability, and straightforward routine service.
Notes	Match parts by full model code/serial. Props and gearcase parts may differ by gear ratio and shaft length; confirm before ordering.

Routine Maintenance & Service Parts

Intervals below are general guidelines for 4‑stroke mid‑range outboards. Always follow your official Honda service manual and local operating conditions.

Item	Interval*	Remarks	Parts Link
Engine oil & filter	First 20 hours, then every 100 hours or annually	Use marine‑grade oil meeting Honda specs; replace crush washer as needed.	Oil Filters
Gear oil (lower unit)	Every 100 hours or annually	Inspect magnet for metal; replace drain/vent gaskets; pressure test if water intrusion is suspected.	Honda Outboard Parts
Spark plugs	Inspect every 100 hours; replace 200–300 hours or as needed	Check gap and color; replace sooner if misfire or hard starts occur.	Spark Plugs
Fuel filter / water separator	Inspect every 50–100 hours; replace annually	Drain water regularly; ethanol fuel may require more frequent service.	Fuel Filters
Water pump impeller/kit	Every 2–3 seasons or 200–300 hours; inspect annually	Replace sooner if weak telltale, overheating, or sand/silt use.	Honda Water Pump Repair Kits
Anodes (sacrificial zinc/aluminum)	Inspect every 50 hours; replace when 50% consumed	Match material to water type (zinc in salt, aluminum multi‑water, magnesium in fresh).	Anodes
Propeller & hub hardware	Inspect every service; replace as needed	Check for hub slip, bent blades, and correct pitch; verify spline/hub kit compatibility.	Propellers

Frequently Used Parts Categories

Routine Service: Service & Maintenance Kits
Cooling System: Honda Water Pump Repair Kits
Gearcase & Seals: Honda Lower Unit Seal Kits
Fuel System: Fuel Filters
Ignition / Electrical: Electrical Items
Corrosion Protection: Anodes
Propulsion: Propellers

Common Symptoms & Quick Checks

Symptom	Check First	Related Parts
Weak telltale stream or overheat alarm	Inspect intake screens for debris, verify thermostat operation, and check impeller condition.	Water pump repair kit, thermostat, anodes
Poor acceleration or power loss	Check for damaged/incorrect prop, clogged fuel filter, and worn spark plugs.	Propellers, fuel filters, spark plugs
Hard starting or rough idle	Confirm fresh fuel, battery condition, clean idle circuits, and proper plug gap.	Fuel filters, spark plugs, electrical items
Gearcase noise or metal in gear oil	Check gear oil level/condition; inspect prop shaft for fishing line; pressure test gearcase and inspect seals.	Lower unit seal kits, propellers

FAQs

Are parts interchangeable between 80 HP and other mid‑range Honda models?

Many service parts are shared across the BF75/BF80/BF90/BF100 family, but there are serial breaks and version differences. Always match parts by full model code and serial to ensure fit.

When should I replace the impeller?

Inspect annually and replace every 2–3 seasons or 200–300 hours. Replace sooner if you run in sandy/silty water, the telltale weakens, or an overheat occurs.

How often should I change the lower unit gear oil?

Typically every 100 hours or annually. If water or metal is found, service the gearcase and consider a seal kit and pressure test.

What information do you need to confirm part compatibility?

Please provide the full model code, serial number, shaft length (S/L/X), control type (tiller or remote), and any known year or region. Photos of the nameplate and the part needing replacement are helpful.

Ready to find parts by horsepower, year, and model? Browse our main Honda collection and use the Filter & Sort tools to narrow the results for your 80 HP outboard.

Shop Honda Outboard Parts

If you’re unsure about your model, send us a photo of the nameplate and the part you need and we’ll help verify compatibility.