Made in USA
81392 Pro Mag 20 Generator Drag Race, Chevy V8
InfoVehicle Info Needed
MSD IGNITIONPART NUMBER: 121-81392

81392 Pro Mag 20 Generator Drag Race, Chevy V8

$2,69895$2999.95You Save$301.00
ShippingShips on 09/09/2026
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Pro Mag 20 Amp
    Pro Mag 20 Generator
  • Drag Race, Chevy V8
  • 20 Amp, Male/HEI Cap
  • Clockwise Rotation

    For blocks with taller deck heights.

    Specifications:
  • Primary Current: 20 Amps
  • Spark Energy: 240 millijoules (at the gap)
  • Secondary Voltage: 40,000 Volts
  • Secondary Current: 300 MilliAmps
  • Spark Duration: 26° Crankshaft Rotation
  • RPM Rating: Through 14,000 rpm

    Note: Requires use of Electronic Points Box 121-8106.

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 TypeMagneto
BrandMSD IGNITION
Package Height8.0
Package Width8.0
Package Length23.0
Weight13.4 PG
Part CategoryPerformance Parts
Cap Diameter4 in (101.6 mm)
Part FitmentSemi Universal
Height From Manifold11.71
Vendor Part Number81392
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
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