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Outboard Oil Change & Service Kit Finder

June 10, 2026

Outboard Oil Change, Service Kit & Maintenance Kit Finder

Find the right Mercury, Yamaha, or Suzuki outboard maintenance kit. Start with the selector below, then use this guide to understand oil change kits, 100 hour service kits, 200 hour kits, 300 hour kits, fluids, impellers, gear lube, and fitment details.

Oil Change KitsService Kits100 Hour Kits200 Hour Kits300 Hour KitsMercuryYamahaSuzuki

Find Your Outboard Maintenance Kit

Start by choosing whether you need an oil change kit or a service kit. Then select your manufacturer, horsepower, and engine family to find the matching products.

1. Maintenance Type

2. Manufacturer

3. Horsepower

4. Engine Family

Your Selection: Start by choosing a maintenance type.

Choose Oil Change Kit or Service Kit first, then narrow by manufacturer, horsepower, and engine family.

Browse Maintenance Kit Categories

Prefer to browse instead of using the selector? Choose your engine brand below to shop oil change kits or service kits directly.

Oil Change Kits vs. Service Kits

An outboard oil change kit is normally used when you are changing engine oil and the oil filter. A service kit is broader and is usually tied to a scheduled maintenance interval such as annual service, 100 hour service, 200 hour service, or 300 hour service.

Oil Change Kits

Oil change kits are best when the engine only needs routine engine oil service. Depending on the kit, they may include oil, an oil filter, drain gasket, and other small sealing parts.

Best for routine oil and filter service
Usually sorted by oil type such as 10W30, 10W40, 20W40, 25W40, 25W50, or 5W30
Does not usually replace spark plugs, fuel filters, impellers, or water pump components

Service Kits

Service kits are designed for broader maintenance. Depending on the engine, kit version, and interval, they may include filters, spark plugs, seals, water pump components, engine oil, and gear lube.

Best for 100 hour, annual, 200 hour, or 300 hour maintenance
May be offered with oil and gear lube or without fluids
Some Yamaha kits may be offered with or without impeller components

What Is Usually Included in a 100 Hour Outboard Service?

A 100 hour service is one of the most common maintenance intervals for Mercury, Yamaha, and Suzuki outboards. The exact list varies by engine, but it often includes engine oil service, lower unit gear lube service, filter replacement, spark plug replacement, and inspection or replacement of cooling-system components.

Common 100 Hour Service Items

Engine oil and oil filter
Gear lube and drain/fill gaskets
Fuel filter or water-separating fuel filter element
Spark plugs, depending on engine and interval
Water pump, impeller, gaskets, or seals when included in the kit
Anodes, thermostats, and additional filters on some applications

Important: Not every service kit includes oil or gear lube. Some kits are complete fluid kits, while others are sold without fluids so customers can choose their preferred oil package.

100 Hour vs. 300 Hour Service Kits

A 100 hour service kit is generally for regular scheduled maintenance. A 300 hour service kit is usually a more complete maintenance interval and may include additional filters, plugs, seals, water pump parts, or other components depending on the engine family.

Do not choose by horsepower alone. A 300HP outboard may be a Mercury L6 Verado, Mercury V8, Yamaha 4.2L, Yamaha SHO, Suzuki DF300A, Suzuki DF300B, or another family. Serial number, gearcase, model year, midsection, and displacement can all change the correct kit.

Maintenance Kit Fitment by Brand

Mercury

Mercury kit fitment often depends on displacement, serial range, gearcase, and engine family. Common groupings include 1.7L and 2.1L FourStroke, L4 Verado, L6 Verado, 3.4L V6, 4.6L V8, V8 CMS, Verado AMS, V10, V12, and 500R applications.

Yamaha

Yamaha kits are commonly grouped by F-Series, SHO, Offshore, and XTO models. Fitment may depend on 2.8L, 3.3L, 4.2L, 4.3L V6, 5.3L V8, DEC controls, year range, and whether the kit includes impeller parts.

Suzuki

Suzuki kits are commonly grouped by DF model families such as DF25A/DF30A, DF40A/DF50A/DF60A, DF75A/DF80A/DF90A, DF115/DF140, DF150/DF175, DF200/DF225/DF250 V6, and DF300B/DF325A/DF350A.

How to Choose the Right Kit

Start with the maintenance task: Choose Oil Change Kit for oil service, or Service Kit for broader scheduled maintenance.
Confirm manufacturer: Mercury, Yamaha, and Suzuki kits are not interchangeable unless a product specifically says so.
Confirm horsepower and engine family: Horsepower alone is not enough for many engines.
Check serial number or model year: Mercury serial ranges and Yamaha/Suzuki year ranges can change kit fitment.
Check kit option: Review whether the card says with oil, without oil, with gear lube, without gear lube, with impeller, or without impeller.

Outboard Maintenance Kit FAQ

Do I need an oil change kit or a service kit?

Choose an oil change kit if you only need engine oil and filter service. Choose a service kit for broader scheduled maintenance such as a 100 hour or 300 hour service.

Do service kits include gear lube?

Some service kits include gear lube and some do not. Product cards should be reviewed carefully because fluid inclusion affects both price and what else you need to buy.

Why does the same engine show multiple kits?

The same engine family may have OEM, aftermarket, with-oil, without-oil, with-impeller, without-impeller, 100 hour, and 300 hour options.

Why does serial number matter?

Manufacturers sometimes change filters, plugs, gearcase parts, or service components at a serial break. Mercury outboards especially often require serial-number verification.

Can I build my own kit?

Yes. Some customers prefer to customize maintenance parts. Use the selector to find the right kit family, then review product details and component lists to decide whether a complete kit or individual parts are best.

Dealer Discounts & Store Policies

Dealer / Marine Industry Discounts

Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.

Apply for a Dealer Account

Shipping Policy

Free shipping on orders over $100 continental U.S.
Orders ship via UPS, USPS, and FedEx.
Orders received before 5:30 PM EST ship the same business day.
Typical delivery time is 1-5 business days.

30-Day Return Policy

Maintenance kits must be new, unused, and in original packaging.
Returns accepted within 30 days of delivery.
Installed parts are not returnable.
Return authorization is required before sending items back.

Need help with a return or order question?
Contact Us
Phone: 941-721-3000

Searchable Terms

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