Yamaha 2-Stroke 175HP Outboard Marine Engine Parts

(46 products)

This page is tailored for Yamaha 2‑Stroke 175HP outboard engines. Use it to find compatible parts and practical service guidance, including maintenance intervals, frequently used replacement items, and troubleshooting tips. You can also browse the main Yamaha collection. Scroll to the bottom of this page to start browsing parts for this engine, and remember that on the collection page you can use the Filter & Sort controls to narrow results by horsepower, year range, and part category/section.

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How to Identify Your 175HP Model

Nameplate location: On Yamaha outboards, the model/serial tag is typically on the top outside edge of the clamp bracket or on top of the swivel bracket (port or starboard).
Reading the code: The model code indicates horsepower and features; suffix letters often denote shaft length (S=15", L=20", X=25") and control/starting options. The final characters generally indicate the production year code.
Platform clues (2‑Stroke): Carbureted V6 engines have multiple carburetors and lack high‑pressure fuel rails; EFI V6 engines (often labeled OX66) have fuel rails, an oxygen sensor, and additional fuel filtration hardware.
Typical year range: 175HP Yamaha 2‑Stroke V6 models are commonly found from the mid‑1980s through the early‑2000s. Always verify with the exact model code and serial number.

Platform Overview

V6 2‑Stroke (Carbureted)

Feature	Description
Configuration	90° V6, loop‑charged 2‑Stroke, carbureted induction
Common Models	175HP 2‑Stroke V6 carbureted models (approx. mid‑1980s to mid‑1990s)
Advantages	Simple fuel system, lighter weight, strong holeshot
Notes	Some engines use oil injection; others may be operated on 50:1 premix. Verify ignition components and carb kits by exact model code.

V6 2‑Stroke (EFI, often OX66)

Feature	Description
Configuration	90° V6, 2‑Stroke with electronic fuel injection
Common Models	175HP 2‑Stroke V6 EFI models (approx. late‑1990s to early‑2000s)
Advantages	Improved cold starts, smoother idle, better mid‑range fuel economy vs. carbureted
Notes	EFI models require the correct filters, high‑pressure pump/VST components, and O2 sensor parts. Confirm by model/serial.

Routine Maintenance & Service Parts

Intervals below are general guidelines for Yamaha 2‑Stroke V6 engines. Always follow the procedures and schedules in your official service manual.

Item	Interval*	Remarks	Parts Link
Gear oil (lower unit)	Every 100 hrs or annually	Inspect for metal and water intrusion; replace seals if milky	Yamaha Lower Unit Seal Kits
Spark plugs	100 hrs or each season	Check heat range and gap; replace if fouled or worn	Spark Plugs
Fuel filter / water-separating filter	50–100 hrs or sooner in contaminated fuel	Replace element; drain water frequently	Fuel Filters
Water pump impeller / kit	Every 1 year or 200 hrs	Replace sooner for sandy/muddy use or weak tell‑tale	Yamaha Water Pump Repair Kits
Anodes (internal/external)	Inspect often; replace at ~50% consumption	Choose alloy for your water (zinc, aluminum, magnesium)	Yamaha Anodes
Oil injection service or premix verification	100 hrs or annually	Inspect strainer/screens, hoses, and pump linkage; if premix, use TC‑W3 at 50:1 unless your model specifies otherwise	Yamaha Service & Maintenance Kits
Propeller & hardware inspection	Each haul‑out	Check for dings, spun hub, and fishing line on the prop shaft	Yamaha Propellers

*Intervals are typical for recreational use; shorten for commercial or harsh environments.

Frequently Used Parts Categories

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

Common Symptoms & Quick Checks

Symptom	Check First	Related Parts
Weak tell‑tale stream or overheat alarm	Inspect intake screens for debris; verify impeller condition; confirm thermostat operation	Water pump kit, thermostat, intake screen
Poor acceleration or power loss	Check fuel quality, filters, spark plugs, and prop condition; verify throttle opening	Fuel filter, spark plugs, propeller, carb/EFI service items
Hard starting or rough idle	Verify primer/enrichment operation; inspect plugs; look for air leaks; clean carbs or check VST/EFI filters	Spark plugs, carb kits, EFI filters, fuel lines/primer bulb
Excessive smoke (2‑Stroke)	Confirm correct oil ratio; check oil pump linkage and thermostat; look for stuck‑open choke	Spark plugs, oil pump strainer/lines, thermostat
Gearcase noise or metal in gear oil	Check oil level/condition; inspect prop shaft for fishing line; pressure test for seal leaks	Seals, bearings, shims, prop hub

FAQs

Are parts interchangeable between different 175HP years or platforms?

Many wear items (anodes, water pump kits, some seals) interchange across V6 2‑Stroke years, but ignition and fuel system parts can differ between carbureted and EFI engines and by production year. Always confirm with your model code and serial.

When should I replace the impeller?

Replace the impeller every 1–2 seasons, or sooner if you notice a weak tell‑tale, overheat warnings, or frequent sandy/muddy operation. Full pump kits are recommended if the housing or wear plate is scored.

How often should I change the lower unit gear oil?

Change gear oil every 100 hours or annually. If you find milky oil (water intrusion) or metal shavings, service seals and inspect gears/bearings immediately.

What information do you need to confirm part compatibility?

Provide the Yamaha model code, serial/production number, shaft length (S/L/X), and whether the engine is carbureted or EFI. A clear photo of the nameplate and the part needing replacement is also helpful.

Ready to find parts by horsepower, year, and model? Browse our main Yamaha selection to pinpoint compatible components for your 175HP 2‑Stroke outboard.

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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.