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Vehicle Info NeededMSD IGNITIONPART NUMBER: 121-6560K
6M-2L Marine Ignition Control Kit for Chevy
$1,28970
Ships on Sep 04, 2026
Lowest Price GuaranteeMarine
- 6M-2L Marine Ignition Control Kit
- Small Block Chevy
- Blue
Includes: - 6M-2L Marine Ignition Control
- Marine Pro-Billet Distributor
- High-Vibration Blaster Coil
- Super Conductor 8.5mm Wires
The MSD 6M-2L Ignition Control is designed for performance marine applications where a high energy and reliable ignition is a necessity. The capacitive discharge design of the MSD produces full power sparks throughout your boat's entire rpm range. Below 3,000 rpm, a series of multiple sparks burn in the cylinder for 20° of crankshaft rotation ensuring complete combustion. Together, these sparks produce easier starting, great throttle response, more power and reduced plug fouling during idling. Weathertight connectors securely lock together to provide reliable connections that are unaffected by water, oil, gasoline and most other chemicals associated with boats. The 6M-2L's electrical circuitry is potted with a polyurethane compound. This material prevents the electrical components from coming into contact with water or other chemicals. The 6M-2L also features a built-in Soft Touch Rev Control that will save your engine from overrev damage. The rpm limit is set with sealed rpm modules. The 6M-2L can be triggered by either a magnetic pickup (distributor or crank trigger), amplifier or by a breaker point distributor. The cable harness has the proper connector so you can plug the 6M-2L into one of the Pro-Billet MSD Marine distributors.Highlights - Designed for performance marine applications
- 4000, 6000, and 8000 RPM modules included
- Weathertight connector with multi-ribbed seal for reliable connection unaffected by water, oil, gas, and most other boating chemicals
- Completely potted circuitry with polyurethane for weather-proof protection
- Cable harness has proper connector so you can plug the 6M-2L into an MSD Pro Billet Marine Distributor
- Triggered by magnetic pickup (distributor or crank trigger), breaker points distributor, or amplifier
- Tested by Underwriter's Laboratory and certified to meet or exceed USCG standardsOperating Specifications
- Spark Energy: 105-115 mJ per spark
- Primary Voltage: 460-480 volts
- Secondary Voltage: 45,000 volts (tested with Blaster Coil)
- Spark Series Duration: 20° crankshaft rotation
- RPM Range: 15,000 RPM with 14.4 volts
- Voltage Required: 12-18 volts (negative ground)
- Current Draw: 1 amp per 1000 RPM
- Size: 8" L x 3.5" W x 2.25" H
- Weight: 3.5 lbsKit Includes
- 6M-2L Marine Ignition Control 121-6560
- Marine Pro-Billet Distributor 121-8560
- Red Blaster SS Coil 121-8207
- Super Conductor 8.5mm Wires 121-31353
Emissions Note:
This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.
CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART
Part TypeIgnition Boxes Easy Kit
BrandMSD IGNITION
Package Height2.65 in (67.31 mm)
Package Width2.23 in (56.642 mm)
Primary Resistance0.355 ohms
Housing FinishNatural
Housing Materialbillet aluminum
Ignition Box RequiredYes
Spark Plug Boot EndsEight 90 degree
Peak Current300 mA
Computer-Controlled CompatibleNo
Rfi SuppressionYes
Gear MaterialIron
Coil Internal ConstructionEpoxy
Advance TypeMechanical
Diameter (Mm)8.5
Distributor Boot MaterialSilicone
Marine UseYes
Coil StyleE-core
PositionN/A
ColorBlack
Wire ColorBlack
Ballast Resistor IncludedNo
Spark Plug Boot MaterialSilicone
Coil Wire IncludedNo
Trigger StyleMagnetic
Part CategoryPerformance Parts
Carb Eo NumberD-40-37 (pdf)
Distributor TypeHEI/Breakerless
AssembledYes
Engine Make/SizeChevy Marine V8
Turns Ratio70:01:00
Spark Plug Boot ColorGray
Mounting Bracket IncludedNo
Inductance6.9 mH
Distributor Terminal EndsMale/HEI
Distributor Boot ColorGray
Secondary Resistance4.40K ohms
Slip CollarNo
Mechanical Tach DriveNo
Boot Type90 Degree
Coil Wire AttachmentMale/HEI
QuantitySold as a set
Overall Length3.5 in (88.9 mm)
Maximum Voltage40,000 V
Coil ShapeSquare
Coil ColorRed
Spark Duration220 uS
Distributor Gear RotationStandard
Conductor StyleSpiral core
Cap StyleMale/HEI
Part FitmentUniversal
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
