3008M0077471 Mercury MerCruiser Ignition coil | Genuine Quicksilver OEM Part

🔧 Product Description

Genuine Quicksilver DFI / OptiMax Ignition Coil - Part Number: 300-8M0077471

A genuine Quicksilver ignition coil for selected Mercury DFI / OptiMax outboards. This coil supplies high-voltage spark output to the spark plug and is commonly used across 1.5L 3-cylinder DFI and selected 3.0L DFI / OptiMax engines.

⚙️ Key Features

• Genuine Quicksilver OEM ignition coil

• Correct Mercury part number 300-8M0077471

• Used on selected Mercury DFI / OptiMax outboards

• Replaces earlier 879984T-series ignition coil references

• Critical ignition component for clean spark, starting and running quality

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 300-8M0077471 current / later ignition coil reference

• 300-8M0077471 replaces 339-879984T01 / 339-879984T00 family where specified

OEM / Related Numbers:

• 300-8M0077471

• 8M0077471

• 3008M0077471

• 339-8M0077471

• 339-879984A01

• 339-879984T01

• 339-879984T00

• 879984T01

• 879984T00

Aftermarket / Verified Equivalents:

• Recmar: REC300-8M0077471

• Sierra: 184-0003 / 18-? equivalent coil family where listed

🚤 Compatibility

Commonly used on:

• Mercury DFI / OptiMax ignition systems

• Mercury 1.5L 3-cylinder DFI and selected 3.0L DFI applications

Typically suits:

• Engine models:

• Mercury 75 DFI 1.5L 3-cylinder - serial 0T980000 and up

• Mercury 80 Jet DFI 1.5L 3-cylinder - serial 1B586067 and up

• Mercury 90 DFI 1.5L 3-cylinder - serial 0T801000 and up

• Mercury 115 DFI 1.5L 3-cylinder - serial 0T801000 and up

• Mercury 115 Pro XS 1.5L 3-cylinder - serial 1B751825 and up

• Mercury 125 DFI 1.5L 3-cylinder - serial 1B736885 and up

• Mercury 200 DFI 3.0L - serial 1B504989 to 1B912785

• Mercury 200 Pro XS DFI 3.0L - serial 1B504989 to 1B912785

• Mercury 200 DFI 3.0L - serial 1B504989 and up

• Mercury 200 DFI 3.0L - serial 1B528615 and up

• Mercury DFI / OptiMax engines using coil 300-8M0077471 / 879984T01 where specified

• HP Range: commonly 75HP - 200HP DFI / OptiMax where specified

• Engine Type: Mercury DFI / OptiMax 2-stroke outboard

• System Type: Ignition coil

🔌 Function

The ignition coil converts low-voltage ignition input into the high-voltage spark required to fire the spark plug and ignite the air/fuel mixture.

Common signs of failure:

• Misfire on one cylinder

• Hard starting

• Rough idle

• Weak or no spark

• Coil fault code or failed resistance / spark test

📦 Condition

• Genuine Quicksilver part

• Brand new

• Supplied in original or equivalent packaging