Description
Quicksilver 8M0077471 Ignition Coil Mercury Mariner OptiMax DFI EFI Outboards
Restore reliable ignition performance with the Quicksilver 8M0077471 12-volt ignition coil. Produced to meet Mercury Marine original equipment manufacturer specifications, this coil is designed for select Mercury and Mariner outboard, Mercury Racing, jet drive, and MerCruiser applications where part number 8M0077471 is specified.
Key Features
- Genuine Quicksilver 12-volt ignition coil for select Mercury and Mariner applications
- Fits select 75/90/115 HP 3-cylinder OptiMax outboards beginning in model year 2004
- Fits various Mercury and Mariner V6 2-cycle outboard applications where specified
- Used on select 200-300 HP 2.5L and 3.0L Mercury and Mariner DFI, EFI, Racing, and jet drive 2-stroke outboards
- Also listed for MCM 600SCi applications where specified
- Produced to meet Mercury Marine OEM specifications for fit, function, and performance
- Useful replacement for a failed, weak, intermittent, or damaged ignition coil after proper diagnosis
Fitment / Product Details
- Brand: Quicksilver
- Part Number: 8M0077471
- BU Part ID: 8M0077471
- Product Type: Ignition Coil / 12-Volt Ignition Coil
- Application: Select Mercury and Mariner outboards, Mercury Racing, jet drive 2-stroke outboards, and MCM 600SCi applications where 8M0077471 is specified
- Engine Types: Mercury / Mariner OptiMax, DFI, EFI, Racing, and 2-cycle outboard applications; MCM 600SCi where specified
- HP Range: 75-115 HP 3-cylinder OptiMax applications; select 200-300 HP 2.5L and 3.0L DFI / EFI / Racing / jet drive 2-stroke applications; additional V6 2-cycle applications where specified
- Serial Ranges: Not provided in supplied product data; verify by engine serial number and ignition parts diagram
- Year Range: 75/90/115 HP 3-cylinder OptiMax beginning model year 2004; other applications vary by engine model and serial number
- Voltage: 12V
- UPC: 745061861565
- Country of Origin: CN
- Prop 65: No
- Package Dimensions: 3.75 in. L x 3.1 in. H
- Package Weight: 0.77 lb
- Package Quantity: 1
- Brand Store Category: Parts
- Brand Store Subcategory: Ignition System
- Supersedes / Replaces: 879984T01
- Fitment Note: Confirm compatibility by Quicksilver part number, Mercury or Mariner engine model, horsepower, ignition system, engine serial number, owner’s manual, service manual, or parts diagram before ordering.
What’s Included
- One Quicksilver 8M0077471 12-volt ignition coil
Expanded Fitment
- Mercury / Mariner 75 HP 3-cylinder OptiMax outboards beginning model year 2004 where specified
- Mercury / Mariner 90 HP 3-cylinder OptiMax outboards beginning model year 2004 where specified
- Mercury / Mariner 115 HP 3-cylinder OptiMax outboards beginning model year 2004 where specified
- Select Mercury / Mariner V6 2-cycle outboards where 8M0077471 is specified
- Select Mercury / Mariner 200-300 HP 2.5L and 3.0L DFI / EFI 2-stroke outboards where specified
- Select Mercury Racing and jet drive 2-stroke outboard applications where specified
- MerCruiser MCM 600SCi applications where specified
- Not universal; verify exact fitment by engine serial number and ignition system parts diagram
Why You Should Buy
- OEM-spec Quicksilver ignition coil for reliable fit when matched to the correct Mercury application
- Helps restore strong spark output and proper ignition performance after coil failure
- Ideal replacement during ignition troubleshooting, misfire diagnosis, or preventive service
- Correct updated replacement when your parts data specifies 8M0077471 or superseded 879984T01
- Backed by Mercury Marine engineering, testing, and manufacturing standards for fit, function, and performance
Common Applications
- Mercury OptiMax ignition coil replacement
- Mariner DFI / EFI 2-stroke ignition service
- Mercury 75-115 HP 3-cylinder OptiMax coil replacement
- Mercury 200-300 HP V6 2-stroke ignition troubleshooting
- Mercury Racing and jet drive 2-stroke ignition service where specified
- Replacement of weak, failed, intermittent, or damaged ignition coils
FAQ
- What is Quicksilver 8M0077471? It is a 12-volt ignition coil for select Mercury and Mariner outboards, Mercury Racing applications, jet drive 2-strokes, and MCM 600SCi applications where specified.
- What HP range does this ignition coil fit? It fits select 75-115 HP 3-cylinder OptiMax applications and select 200-300 HP 2.5L / 3.0L DFI, EFI, Racing, and jet drive 2-stroke applications where specified.
- Does this fit 75/90/115 HP OptiMax engines? Yes, your supplied data lists fitment for 75/90/115 HP 3-cylinder OptiMax outboards beginning in model year 2004.
- Does this fit 200-300 HP outboards? Yes, the product description lists select 200-300 HP 2.5L and 3.0L Mercury and Mariner DFI, EFI, Racing, and jet drive 2-stroke outboards.
- What part number does it replace? Your supplied data lists 8M0077471 as superseding / replacing 879984T01.
- Is this a 12-volt ignition coil? Yes, the product description identifies it as a 12-volt ignition coil.
- Is Prop 65 required? No. Your supplied product data lists Prop 65 as “No.”
- How do I confirm fitment? Confirm using Quicksilver part number 8M0077471, your engine model, horsepower, serial number, ignition system, parts diagram, owner’s manual, or service manual.







