Made in USA
Crank Trigger Distributor Chevy V8 Low Profile w/ Red Crab Cap
InfoVehicle Info Needed
MSD IGNITIONPART NUMBER: 121-8489

Crank Trigger Distributor Chevy V8 Low Profile w/ Red Crab Cap

$41595
2 left in stock
ShippingShips on Nov 02, 2026
Lowest PriceLowest Price Guarantee

Chevy w/Crab Cap HEI-Style
Crank Trigger Distributor
  • Chevy V8 Low Profile
  • With Red Crab Cap

    Built for racing engines and equipped with a special low-profile crab style distributor cap.

    Features:

    • Fits low in the block to clear firewall and intake combinations
    • Adjustable slip collar
    • 0.500 in. taller for extra tall Chevrolet based engine blocks
    • Oil tract improves lubrication
    • Can add o-ring seals for modified blocks to improve oil pressure control
    • Includes small, low crab style distributor cap, rotor and bronze gear
    • Must use with an MSD Crank Trigger and MSD 6, 7 or 8-Series Ignition Control
    • Must be used with an MSD Crank Trigger and MSD Ignition Control
    • Supplied with small, low crab style distributor cap, rotor and bronze gear
    • O-ring seals can be added to modified blocks to improve oil pressure control
    • Special oil tract improves lubrication to the distributor and cam gear
    • Shaft is guided by a sealed ball bearing and an extra long sintered bushing
    • Oversized polished steel shaft with a QPQ coating for friction reduction

    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

    • Distributors Geared for Racing

      MSD Ignition Crank Trigger distributors are designed for racing engines that use a crankshaft triggered ignition. A low profile lets these distributors fit in tight quarters and still accurately deliver the sparks. Each crank trigger distributor contains a CNC-machined billet aluminum housing and inside the housing, a sealed ball bearing and long sintered bushing, guide a QPQ-coated shaft for accurate spark delivery throughout high rpm. A low profile distributor cap with brass terminals clamps onto the housing and covers the racing rotor. The rotor contains deep vanes to stir up the air; reducing the chance of spark scatter. Since these distributors are for racing applications, bronze gears are supplied. Must be used with an MSD Crank Trigger and MSD 6, 7 or 8-Series Ignition Control

    Part TypeDistributor
    Product LineMSD Ignition Crank Trigger Distributors
    BrandMSD IGNITION
    Package Height6.9
    Package Width7.0
    Package Length17.9
    Weight3.93 PG
    Part CategoryPerformance Parts
    Marine UseNo
    Housing FinishNatural
    Housing Materialbillet aluminum
    Ignition Box RequiredYes
    QuantitySold individually
    Distributor TypeCrank Type w/Mech. Tach Drive
    Engine Make/SizeChevy Small Block (262-400)
    Computer-Controlled CompatibleNo
    Trigger StyleCrank trigger
    Distributor Gear RotationStandard
    Cap StyleMale/HEI
    Part FitmentSemi Universal
    Slip CollarYes
    Mechanical Tach DriveNo
    Gear MaterialBronze
    Advance TypeNone
    Vendor Part Number8489
    Package Qty1
    Package TypeEA
    No Questions
    No Reviews

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