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Msd Ignition

MSD Pro-Billet Distributors 85551 Distributor, Pro-Billet, Mech. Adv., Magnetic Trigger, 6.937 in. Tall, Small Red Cap, 0.500 in. Shaft, Needs Box, Chevy, Big/Small Block, Each

SKU: MSD85551

Distributors
MSD Pro-Billet Distributors 85551 Distributor, Pro-Billet, Mech. Adv., Magnetic Trigger, 6.937 in. Tall, Small Red Cap, 0.500 in. Shaft, Needs Box, Chevy, Big/Small Block, Each

Msd Ignition

MSD Pro-Billet Distributors 85551 Distributor, Pro-Billet, Mech. Adv., Magnetic Trigger, 6.937 in. Tall, Small Red Cap, 0.500 in. Shaft, Needs Box, Chevy, Big/Small Block, Each

SKU: MSD85551

Distributors
A$915.28
IN STOCK! Est Ship 4-7 days. This item is IN STOCK at one of our warehouses or distribution centres, the ETA is the approximate time required to prepare your order for dispatch.
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Description

MSD Pro-Billet distributors share the same CNC machining techniques as the rest of the MSD distributor line. They feature a housing that's machined from high-quality 6061-T6 aluminum for durability and show-quality looks. Their oversized shaft receives a QPQ coating for friction reduction and corrosion resistance, with the added strength of two sealed ball bearings that guide the shaft accurately at well over 10,000 rpm. An extra-long sintered bushing replaces the ball bearing at the bottom of Chevrolet models. TIG-welded on top of the polished steel shaft is MSD's accurate mechanical advance assembly. The weights are supported by nylon pads that allow the advance to operate smoothly throughout the rpm range.

For all-out racing, the advance mechanism can also be easily locked out. To accurately trigger the ignition, a high-output magnetic pickup is bolted to the base. This pickup produces a precise trigger signal that will never vary more than one degree at any rpm. A durable gear is installed for performance applications, and an MSD red cap with brass terminals and race rotor is supplied. They're available in standard and small diameter models for applications with limited clearance, and require the use of a separate ignition box such as an MSD 6, 7, 8, or 10 Series ignition.

Part Type

Chevy Dist. V-8 Billet w/Cap & Rotor

Data: v4.2 - Upd: 2026-10-13 18:44:14

Specifications

Product Attributes - Brand
MSD Ignition
Product Attributes - Manufacturer's Part Number
85551
Product Attributes - Part Type
Distributors
Product Attributes - Product Line
MSD Pro-Billet Distributors
Product Attributes - UPC
085132855513
Product Attributes - Distributor Cap Included
Yes
Product Attributes - Distributor Cap Style
Male/HEI
Product Attributes - Distributor Cap Type
Small cap
Product Attributes - Ignition Coil Included
No
Product Attributes - Ignition Module Included
No
Product Attributes - Computer-Controlled Compatible
No
Product Attributes - Trigger Style
Magnetic
Product Attributes - Advance Type
Mechanical
Product Attributes - Ignition Box Required
Yes
Product Attributes - Mechanical Tach Drive
No
Product Attributes - Slip Collar
No
Product Attributes - Distributor Gear Material
Melonized
Product Attributes - Distributor Gear Rotation
Standard
Product Attributes - Distributor Cap Color
Red
Product Attributes - Housing Material
Aluminum
Product Attributes - Housing Finish
Natural
Product Attributes - Marine Use
No
Product Attributes - Remanufactured
No
Product Attributes - Quantity
Sold individually.
Product Attributes - Notes
Distributor is 6.937 in. tall from engine to top of distributor cap.
Product Attributes - CARB EO Number(s)
D-40-39
Product Attributes - Emissions
California EO Approved

Reference Information

Brand Name/s Msd Ignition
StreetFX SKU msd85551
SFX Item ID 4974433
Supplier Item Code 4974433
Manufacturer SKU 85551
Manufacturer UPC 851328555136

Compatibility

Application Data
  • Application NotesDistributor is 6.937 in. tall from engine to top of distributor cap.
    Beginning Year1955
    Ending Year1957
    Engine FamilyChevy small block Gen I
    Engine Size4.3L/265
    Engine TypeV8
    MakeCHEVROLET
  • Application NotesDistributor is 6.937 in. tall from engine to top of distributor cap.
    Beginning Year1957
    Ending Year1967
    Engine FamilyChevy small block Gen I
    Engine Size4.6L/283
    Engine TypeV8
    MakeCHEVROLET
  • Application NotesDistributor is 6.937 in. tall from engine to top of distributor cap.
    Beginning Year1962
    Ending Year1969
    Engine FamilyChevy small block Gen I
    Engine Size5.4L/327
    Engine TypeV8
    MakeCHEVROLET
  • Application NotesDistributor is 6.937 in. tall from engine to top of distributor cap.
    Beginning Year1964
    Ending Year1968
    Engine FamilyChevy small block Gen I
    Engine Size5.3L/327
    Engine TypeV8
    MakeCHEVROLET
  • Application NotesDistributor is 6.937 in. tall from engine to top of distributor cap.
    Beginning Year1965
    Ending Year1970
    Engine FamilyChevy big block Mark IV
    Engine Size6.5L/396
    Engine TypeV8
    MakeCHEVROLET
  • Application NotesDistributor is 6.937 in. tall from engine to top of distributor cap.
    Beginning Year1966
    Ending Year1969
    Engine FamilyChevy big block Mark IV
    Engine Size7.0L/427
    Engine TypeV8
    MakeCHEVROLET
  • Application NotesDistributor is 6.937 in. tall from engine to top of distributor cap.
    Beginning Year1967
    Ending Year1969
    Engine FamilyChevy small block Gen I
    Engine Size4.9L/302
    Engine TypeV8
    MakeCHEVROLET
  • Application NotesDistributor is 6.937 in. tall from engine to top of distributor cap.
    Beginning Year1967
    Ending Year1995
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Engine TypeV8
    MakeCHEVROLET
  • Application NotesDistributor is 6.937 in. tall from engine to top of distributor cap.
    Beginning Year1968
    Ending Year1973
    Engine FamilyChevy small block Gen I
    Engine Size5.0L/307
    Engine TypeV8
    MakeCHEVROLET
  • Application NotesDistributor is 6.937 in. tall from engine to top of distributor cap.
    Beginning Year1970
    Ending Year1972
    Engine FamilyChevy big block Mark IV
    Engine Size6.6L/402
    Engine TypeV8
    MakeCHEVROLET
  • Application NotesDistributor is 6.937 in. tall from engine to top of distributor cap.
    Beginning Year1970
    Ending Year1980
    Engine FamilyChevy small block Gen I
    Engine Size6.6L/400
    Engine TypeV8
    MakeCHEVROLET
  • Application NotesDistributor is 6.937 in. tall from engine to top of distributor cap.
    Beginning Year1970
    Ending Year1990
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454
    Engine TypeV8
    MakeCHEVROLET
  • Application NotesDistributor is 6.937 in. tall from engine to top of distributor cap.
    Beginning Year1976
    Ending Year1995
    Engine FamilyChevy small block Gen I
    Engine Size5.0L/305
    Engine TypeV8
    MakeCHEVROLET
  • Application NotesDistributor is 6.937 in. tall from engine to top of distributor cap.
    Beginning Year1979
    Ending Year1982
    Engine FamilyChevy small block Gen I
    Engine Size4.4L/267
    Engine TypeV8
    MakeCHEVROLET
  • Application NotesDistributor is 6.937 in. tall from engine to top of distributor cap.
    Beginning Year1991
    Ending Year1994
    Engine FamilyChevy big block Gen V
    Engine Size7.4L/454
    Engine TypeV8
    MakeCHEVROLET
  • Application NotesDistributor is 6.937 in. tall from engine to top of distributor cap.
    Beginning Year1995
    Ending Year2000
    Engine FamilyChevy big block Gen VI
    Engine Size7.4L/454
    Engine TypeV8
    MakeCHEVROLET

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