null

PHONE SUPPORT M-F 9-5EST 1-856-232-6969

FREE SHIPPING OVER $99

BEST PRICE GUARANTEED

EARN POWERBOAT REWARDS

Holiday Deal! Save an additional $10 on $200, $25 on $500, $50 on $1000, and $100 on $2000 or more! Coupon code "SANTA" at checkout.

FourStroke Outboard Maintenance

FourStroke Outboard Maintenance

Find Your Maintenance Parts

Clear Selection

LOOKING FOR REPLACEMENT PARTS?

  • Mercury Marine 10W30 Full Synthetic Oil Four Stroke 8M0173223 8M0173224

    Mercury Marine 10W30 Full Synthetic Oil Four Stroke 8M0173223 8M0173224

    Mercury Marine / Quicksilver

    $22.04 $15.88
    All-New Mercury 10W-30 Full Synthetic 4-Stroke Marine Engine Oil. Provides the best wear and corrosion protection when operating engine at maximum output and high temperatures for extended periods of time.  45% more dispersant, 24% more detergent...
    Part Number:
    NW-MERFS10W30
    Availability:
    Same Or Next Business Day
    Weight:
    10W-30
    Grade:
    Full Synthetic
    $22.04 $15.88
  • OEM Mercury 40/50/60 HP EFI Oil Change Kit  SAE 25W-40 8M0081916

    OEM Mercury 40/50/60 HP EFI Oil Change Kit SAE 25W-40 8M0081916

    Mercury Marine / Quicksilver

    $60.18 $56.06
    For use in all 4-stroke marine engines.  New formula 4-stroke oils are Mercury Engineering approved for all marine 4-stroke outboard applications.  The new formula exceeds all marine industry 4-stroke oil requirements, including FC-W and...
    Part Number:
    710-8M0081916
    Availability:
    In Stock - Ships same or next business day.
    Weight:
    25W-40
    Grade:
    Standard
    Engine:
    40/50/60 HP FourStroke EFI
    $60.18 $56.06
  • Mercury High Performance Synthetic Blend Four Stroke Oil SAE 25W50 8M0078014 8M0078013

    Mercury High Performance Synthetic Blend Four Stroke Oil SAE 25W50 8M0078014 8M0078013

    Mercury Marine / Quicksilver

    $19.33 $13.92
    Maximum wear protection in extreme racing applications.  Stays in grade under the most demanding conditions to ensure proper lubrication and performance in a wide temperature range.  Contains additives designed for high heat and high rpm to...
    Part Number:
    NW-MER25W50S
    Availability:
    Same Or Next Business Day
    Weight:
    25W-50
    Grade:
    Synthetic
    $19.33 $13.92
  • NGK Spark Plugs 4212 Spark Plug 4212 (Mercury 889246q39)

    NGK Spark Plugs 4212 Spark Plug 4212 (Mercury 889246q39)

    NGK Spark Plugs

    $29.29 $13.30
    NGK Spark Plugs 4212 Spark Plug 4212   Original equipment on many late model applications Iridium at the fine-wire center electrode and platinum at the ground electrode provides maximum durability and performance The platinum at the ground...
    Part Number:
    41-ILFR6GE
    Availability:
    In Stock - Ships same or next business day.
    Model #:
    4212
    Pack:
    4
    $29.29 $13.30
  • OEM Quicksilver/Mercury Water Pump Kit  46-812966A12

    OEM Quicksilver/Mercury Water Pump Kit 46-812966A12

    Mercury Marine / Quicksilver

    $174.83 $125.07
    OEM Quicksllver/Mercury Water Pump Kit  46-812966A12 Water pump repair kit 812966A12 is for Mercury and Mariner 4-stroke outboards 30 hp through 60 hp (Serial Number: 0T409000 thru 1B355222 and 1C000001 & above). The kit includes water impeller,...
    Part Number:
    710-46-812966A12
    Availability:
    In Stock - Ships same or next business day.
    $174.83 $125.07
  • Mercury 100 Hour Maintenance Kit 40/50/60 HP FourStroke EFI 8M0090558

    Mercury 100 Hour Maintenance Kit 40/50/60 HP FourStroke EFI 8M0090558

    Mercury Marine / Quicksilver

    $82.75 $59.08
    For use on 40 through 60HP EFI FourStrokes Kit Contains: 1 Oil Filter1 Low Pressure Fuel Filter1 High Pressure Fuel Filter1 Oil Drain Seal2 Gearcase Drain Seals1 ThermostatThermostat Gaskets
    Part Number:
    710-8M0090558
    Availability:
    In Stock - Ships same or next business day.
    Engine:
    40/50/60 HP EFI FourStroke
    Interval:
    100 Hours
    $82.75 $59.08
  • OEM Mercury Marine Verado Outboard Oil Filter  35-877769K01

    OEM Mercury Marine Verado Outboard Oil Filter 35-877769K01

    Mercury Marine / Quicksilver

    $17.90 $11.01
    Mercury oil filters are constructed of the highest quality materials and made specifically for marine applications.  Unique filtration system screens particles smaller than 1/1000th of an inch to keep your oil cleaner longer.  High-efficiency...
    Part Number:
    710-35-877769K01
    Availability:
    In Stock - Ships same or next business day.
    $17.90 $11.01
  • OEM Quicksilver/Mercury DFI Verado Fuel Filter Element  35-8M0122423

    OEM Quicksilver/Mercury DFI Verado Fuel Filter Element 35-8M0122423

    Mercury Marine / Quicksilver

    $40.08 $27.19
    OEM MerCruiser Filter-Fuel Dfi &Veradqs 35-8M0122423 This under-cowl, in-line fuel filter fits many Mercury and Mariner outboards replacing contaminated filters and is mounted under the engine cowl. It also fits in specific MerCruiser fuel filter...
    Part Number:
    710-35-8M0122423
    Availability:
    In Stock - Ships same or next business day.
    $40.08 $27.19
  • Mercury 300 Hour Maintenance Kit 40-60 HP FourStroke Command Thrust 1C000001 & up 8M0090559

    Mercury 300 Hour Maintenance Kit 40-60 HP FourStroke Command Thrust 1C000001 & up 8M0090559

    Mercury Marine / Quicksilver

    $222.58 $163.27
    300 hour EFI outboard service kit is for 40 hp 50 hp and 60 hp Mercury 4-stroke, 4-cylinder EFI outboard motors with BigFoot or CommandThrust (CT) gearcases only. Kit Includes: Oil FilterFuel Filter, Low PressureFuel Filter, High...
    Part Number:
    710-8M0090559
    Availability:
    In Stock - Ships same or next business day.
    Engine:
    40-60 HP EFI 4 Cly. FourStroke
    Interval:
    300 Hours
    $222.58 $163.27
  • OEM Mercury 15/20 HP Carb 4-Stroke Oil Change Kit SAE 25W-40 8M0081914

    OEM Mercury 15/20 HP Carb 4-Stroke Oil Change Kit SAE 25W-40 8M0081914

    Mercury Marine / Quicksilver

    $32.32 $25.67
    For use in all 4-stroke marine engines.  New formula 4-stroke oils are Mercury Engineering approved for all marine 4-stroke outboard applications.  The new formula exceeds all marine industry 4-stroke oil requirements, including FC-W...
    Part Number:
    710-8M0081914
    Availability:
    In Stock - Ships same or next business day.
    Weight:
    25W-40
    Grade:
    Standard
    Engine:
    15/20 HP FourStroke
    $32.32 $25.67
  • OEM Mercury 25/30 HP EFI 4-Stroke Outboard Oil Change Kit 8M0081915

    OEM Mercury 25/30 HP EFI 4-Stroke Outboard Oil Change Kit 8M0081915

    Mercury Marine / Quicksilver

    $45.99 $45.92
    For use in all 4-stroke marine engines.  New formula 4-stroke oils are Mercury Engineering approved for all marine 4-stroke outboard applications.  The new formula exceeds all marine industry 4-stroke oil requirements, including FC-W and...
    Part Number:
    710-8M0081915
    Availability:
    In Stock - Ships same or next business day.
    Weight:
    25W-40
    Grade:
    Standard
    Engine:
    25/30 HP FourStroke EFI
    $45.99 $45.92
  • Mercury 100 Hour Maintenance Kit 75-115 HP 2.1 L FourStroke 2B094996 & Up 8M0097854

    Mercury 100 Hour Maintenance Kit 75-115 HP 2.1 L FourStroke 2B094996 & Up 8M0097854

    Mercury Marine / Quicksilver

    $36.75 $26.24
    100 hour outboard maintenance kit is for 75 hp through 115 hp, 2.1L Mercury 4-stroke EFI outboards (s/n 2B094996 and up).  Kit Contains: 1 Oil Filter1 In-line Fuel Filter2 Gearcase Drain Seals
    Part Number:
    710-8M0097854
    Availability:
    In Stock - Ships same or next business day.
    Engine:
    75-115 HP 2.1L FourStroke
    Interval:
    100 Hours
    $36.75 $26.24
  • OEM Mercury 75/90/115 HP EFI  4- Stroke Outboard Oil Change Kit  SAE 25W-40 8M0081917

    OEM Mercury 75/90/115 HP EFI 4- Stroke Outboard Oil Change Kit SAE 25W-40 8M0081917

    Mercury Marine / Quicksilver

    $95.56 $80.03
    For use in all 4-stroke marine engines.  New formula 4-stroke oils are Mercury Engineering approved for all marine 4-stroke outboard applications.  The new formula exceeds all marine industry 4-stroke oil requirements, including FC-W and...
    Part Number:
    710-8M0081917
    Availability:
    In Stock - Ships same or next business day.
    Weight:
    25W-40
    Grade:
    Standard
    Engine:
    75/90/115 HP FourStroke EFI
    $95.56 $80.03

When it comes to keeping your Mercury FourStroke outboard motor in top shape, regular maintenance is essential. PowerBoatSupply.com offers a range of premium products specifically designed to keep these engines running smoothly, from oil and filters to spark plugs and more. These items are crafted to meet the rigorous demands of boaters and mechanics for reliable performance on the water.  

Key Features at a Glance: 

  • OEM-Approved Products: Each item is built to meet Mercury’s standards for quality and compatibility. 
  • Wide Range of Maintenance Parts: Everything from oil filters and gear lube to complete maintenance kits for routine servicing. 
  • Ease of Use: These products are designed for easy installation, whether you’re replacing your motor's oil filter or performing a full tune-up. 
  • Performance Enhancements: Using authentic Mercury parts helps maintain optimal fuel efficiency, performance, and engine longevity. 

From prolonging the life of your motor to preventing costly repairs, the right FourStroke outboard maintenance parts make all the difference.  

What Maintenance Does a FourStroke Outboard Need? 

Want to know how to do maintenance on a FourStroke outboard motor? Routine maintenance tasks include oil and filter changes, replacing spark plugs, and keeping the cooling system clean. Following the Mercury FourStroke maintenance schedule is crucial for preventing engine wear and tear, while also maximizing fuel efficiency. 

For example, replacing your oil filter regularly helps remove contaminants and debris that could cause engine damage. Using the recommended Mercury outboard oil and filters guarantees your engine runs cleanly and at peak efficiency. Also, inspecting the gear lube and propeller shaft protects your motor’s drive system against corrosion and premature wear.  

How Often Should I Change the Oil in a FourStroke Outboard? 

According to Mercury’s maintenance schedule, oil changes should happen at least once a year or every 100 hours of operation, whichever comes first. However, in extreme conditions—such as boating in saltwater or when running at high speeds for long periods—you may need to change it more frequently. 

The process involves draining the old oil, replacing the filter, and refilling with fresh oil. This is where quality products come in handy. When choosing oil filters and oils, be sure to use products that match your motor’s specifications for the best results.  

Changing the oil at regular intervals will: 

  • Prevent engine wear 
  • Promote smoother performance 
  • Help with fuel efficiency 

What FourStroke Outboard Parts Need to Be Replaced First? 

Some parts of a Mercury FourStroke motor wear out faster than others and will need to be replaced sooner. Commonly, boat owners will first replace the following:

  • Oil and Filters: Your motor's lifeblood, these should be replaced every 100 hours. 
  • Spark Plugs: Worn-out plugs can cause misfires and poor engine performance. These should be checked and replaced if necessary, especially if you notice difficulty starting the motor. 
  • Water Pump Impeller: If your water pump fails, your engine could overheat. Checking and replacing the impeller regularly helps prevent that. 
  • Gear Lube: This protects your motor’s lower unit and should be checked every season or before long outings. 

Using OEM-certified parts is critical for your engine’s long-term health. Our FourStroke outboard maintenance parts meet Mercury’s exacting standards, which means you’re getting the same durability and reliability as the parts that came with your motor originally. 

Choose PowerBoatSupply.com for All Your FourStroke Maintenance Needs 

Finding the right tools for FourStroke outboard maintenance is easy with PowerBoatSupply.com. Whether you’re looking for outboard maintenance kits for comprehensive servicing or specialty items like Mercury outboard paint, we have the products you need to keep your engine in peak condition.  

Don't wait until a minor issue becomes a major repair! Shop our wide selection of products for FourStroke outboard motors and keep your engine running smoothly for seasons to come. Looking for maintenance for other outboard motors? We have you covered with a full range of high-quality products.