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MSD Ignition 8421

MSD Ignition Cap-A-Dapt Rotor Adjustable

121-8421

made in usa
Ships

$37.26
MSD Ignition Cap-A-Dapt Rotor Adjustable $37.26
Out of stock
QTY
Cap-A-Dapt Rotor
  • Adjustable
  • Chevy V8
  • MSD Ignition 8421 Details

    Cap-A-Dapt Components

    This two-piece rotor allows you to adjust the rotor tip to cap terminal alignment so you can adjust rotor phasing. If you are running a Multi-Step Retard or Timing Controller, the ability to adjust the rotor is beneficial.

    Application:

  • MSD Cap-A-Dapt 121-8420
  • Upgrade to MSD Cap-A-Dapts 121-8445 and 121-8441

  • Specifications:

    Contact Terminal Material
    Stainless steel
    Quantity
    Sold individually
    Manufacturer's Part Number:
    8421
    Shipping Weight:
    0.38
    Package Height:
    0.2
    Package Depth:
    0.3
    Package Width:
    0.2

    MSD distributor caps and rotors are designed with performance in mind and molded from high-quality, voltage-insulating material with terminals that resist carbon tracking. Whenever the distributor cap is changed, you should install a new rotor. Likewise, if you're replacing the rotor, be sure to install a new cap as well. MSD has new kits featuring Rynite injection molded distributor caps and retainers to complete your distributor tune-up. MSD also has Cap-A-Dapts to fit large Ford-style caps onto MSD distributors.

    Does MSD Ignition 8421 fit your vehicle?

    Narrow Results

    1983-1996 FORD E-150 ECONOLINE

    • Liter: 5.8
    • SubModel: XL
    • CUI: 351
    • EngineType: V8 ( 5.8 L / 351 )

    1982 FORD F-100

    • Liter: 4.2
    • SubModel: XL
    • CUI: 255
    • EngineType: V8 ( 4.2 L / 255 )

    1979-1982 FORD E-150 ECONOLINE CLUB WAGON

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1975 FORD E-150 ECONOLINE

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1984-1985 FORD LTD

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1980-1982 FORD F-150

    • Liter: 5.0
    • Aspiration: N
    • SubModel: CUSTOM
    • Engine Vin: F
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1986 FORD E-150 ECONOLINE CLUB WAGON

    • Liter: 5.0
    • SubModel: XL
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1984-1986 FORD E-150 ECONOLINE

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1983-1991 FORD E-350 ECONOLINE CLUB WAGON

    • Liter: 5.8
    • SubModel: XL
    • CUI: 351
    • EngineType: V8 ( 5.8 L / 351 )

    1975-1980 FORD LTD

    • CC: 5753
    • Liter: 5.8
    • SubModel: BASE
    • CUI: 351
    • EngineType: V8 ( 5.8 L / 351 )

    1977-1982 FORD F-150

    • Liter: 5.8
    • SubModel: CUSTOM
    • CUI: 351
    • EngineType: V8 ( 5.8 L / 351 )

    1985 FORD E-150 ECONOLINE CLUB WAGON

    • Liter: 5.0
    • SubModel: XL
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1975 FORD E-350 ECONOLINE

    • Liter: 5.0
    • SubModel: CHATEAU
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1981-1982 FORD F-100

    • Liter: 4.2
    • SubModel: CUSTOM
    • CUI: 255
    • EngineType: V8 ( 4.2 L / 255 )

    1984-1986 FORD E-150 ECONOLINE CLUB WAGON

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1986-1987 LINCOLN CONTINENTAL

    • EngineType: ALL
    • SubModel: ALL

    1976 MERCURY MONARCH

    • Liter: 5.0
    • SubModel: GRAND GHIA
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1976-1977 FORD F-100

    • CC: 4949
    • Liter: 5.0
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: G
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1979 FORD MUSTANG

    • Liter: 5.0
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: F
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1975-1979 FORD F-150

    • Liter: 7.5
    • SubModel: RANGER
    • CUI: 460
    • EngineType: V8 ( 7.5 L / 460 )

    1995-1996 FORD F-350

    • Liter: 5.8
    • SubModel: SPECIAL
    • CUI: 351
    • EngineType: V8 ( 5.8 L / 351 )

    1975-1982 FORD E-250 ECONOLINE CLUB WAGON

    • Liter: 5.8
    • SubModel: BASE
    • CUI: 351
    • EngineType: V8 ( 5.8 L / 351 )

    1975-1983 FORD E-350 ECONOLINE

    • Liter: 7.5
    • SubModel: CUSTOM
    • CUI: 460
    • EngineType: V8 ( 7.5 L / 460 )

    1975-1982 FORD E-250 ECONOLINE CLUB WAGON

    • Liter: 7.5
    • SubModel: BASE
    • CUI: 460
    • EngineType: V8 ( 7.5 L / 460 )

    1981 FORD THUNDERBIRD

    • Liter: 5.0
    • SubModel: HERITAGE
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1992-1996 FORD E-250 ECONOLINE

    • Liter: 5.8
    • SubModel: BASE
    • CUI: 351
    • EngineType: V8 ( 5.8 L / 351 )

    1975-1978 FORD E-350 ECONOLINE

    • Liter: 7.5
    • SubModel: NORTHLAND
    • CUI: 460
    • EngineType: V8 ( 7.5 L / 460 )

    1984-1989 FORD E-350 ECONOLINE CLUB WAGON

    • Liter: 5.8
    • SubModel: XLT
    • CUI: 351
    • EngineType: V8 ( 5.8 L / 351 )

    1980-1981 FORD F-250

    • Liter: 5.0
    • SubModel: RANGER
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1981 FORD F-100

    • Liter: 4.2
    • SubModel: RANGER LARIAT
    • CUI: 255
    • EngineType: V8 ( 4.2 L / 255 )

    1975-1978 FORD MUSTANG II

    • Liter: 5.0
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: F
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1984-1986 FORD E-150 ECONOLINE CLUB WAGON

    • Liter: 5.8
    • SubModel: BASE
    • CUI: 351
    • EngineType: V8 ( 5.8 L / 351 )

    1982 LINCOLN CONTINENTAL

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1977-1979 FORD LTD II

    • Liter: 5.8
    • SubModel: BASE
    • CUI: 351
    • EngineType: V8 ( 5.8 L / 351 )

    1980-1981 FORD BRONCO

    • Liter: 5.0
    • SubModel: RANGER XLT
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1980 FORD F-350

    • Liter: 5.0
    • SubModel: RANGER LARIAT
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1977-1978 FORD F-100

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1980-1981 FORD MUSTANG

    • Liter: 4.2
    • SubModel: GHIA
    • CUI: 255
    • EngineType: V8 ( 4.2 L / 255 )

    1977 LINCOLN VERSAILLES

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1978-1979 FORD F-150

    • Liter: 6.6
    • SubModel: RANGER LARIAT
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1995-1996 FORD F-350

    • Liter: 7.5
    • SubModel: SPECIAL
    • CUI: 460
    • EngineType: V8 ( 7.5 L / 460 )

    1977 MERCURY MONARCH

    • Liter: 5.8
    • SubModel: GHIA
    • CUI: 351
    • EngineType: V8 ( 5.8 L / 351 )

    1975-1976 FORD E-250 ECONOLINE CLUB WAGON

    • EngineType: ALL
    • SubModel: CHATEAU

    1980 FORD E-250 ECONOLINE CLUB WAGON

    • Liter: 6.6
    • SubModel: CHATEAU
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1977-1982 FORD E-350 ECONOLINE CLUB WAGON

    • Liter: 7.5
    • SubModel: BASE
    • CUI: 460
    • EngineType: V8 ( 7.5 L / 460 )

    1982-1994 FORD F-350

    • Liter: 5.8
    • SubModel: XL
    • CUI: 351
    • EngineType: V8 ( 5.8 L / 351 )

    1995-1996 FORD F-250

    • Liter: 5.8
    • SubModel: SPECIAL
    • CUI: 351
    • EngineType: V8 ( 5.8 L / 351 )

    1980 FORD E-250 ECONOLINE CLUB WAGON

    • Liter: 6.6
    • SubModel: CUSTOM
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1992-1996 FORD E-350 ECONOLINE CLUB WAGON

    • Liter: 7.5
    • SubModel: XLT HD
    • CUI: 460
    • EngineType: V8 ( 7.5 L / 460 )

    1988-1996 FORD E-150 ECONOLINE CLUB WAGON

    • Liter: 5.8
    • SubModel: XLT
    • CUI: 351
    • EngineType: V8 ( 5.8 L / 351 )

    1977-1979 LINCOLN MARK V

    • EngineType: ALL
    • SubModel: ALL

    1975-1980 FORD E-250 ECONOLINE

    • Liter: 7.5
    • SubModel: BASE
    • CUI: 460
    • EngineType: V8 ( 7.5 L / 460 )

    1979-1980 FORD E-350 ECONOLINE CLUB WAGON

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1975-1976 FORD ELITE

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1991-1992 MERCURY COUGAR

    • Liter: 5.0
    • SubModel: LS
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1977-1981 FORD F-250

    • Liter: 5.8
    • SubModel: RANGER
    • CUI: 351
    • EngineType: V8 ( 5.8 L / 351 )

    1978-1979 FORD F-100

    • Liter: 5.8
    • SubModel: RANGER LARIAT
    • CUI: 351
    • EngineType: V8 ( 5.8 L / 351 )

    1977-1979 FORD LTD II

    • EngineType: ALL
    • SubModel: S

    1977-1978 FORD F-250

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1984-1986 FORD THUNDERBIRD

    • Liter: 5.0
    • SubModel: ELAN
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1975-1979 FORD RANCHERO

    • EngineType: ALL
    • SubModel: 500

    1992-1996 FORD E-150 ECONOLINE CLUB WAGON

    • Liter: 5.0
    • SubModel: CHATEAU
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1982 MERCURY CAPRI

    • Liter: 4.2
    • SubModel: BLACK MAGIC
    • CUI: 255
    • EngineType: V8 ( 4.2 L / 255 )

    1982 FORD MUSTANG

    • Liter: 4.2
    • SubModel: GL
    • CUI: 255
    • EngineType: V8 ( 4.2 L / 255 )

    1997 FORD F-250 HD

    • Liter: 5.8
    • SubModel: XL
    • CUI: 351
    • EngineType: V8 ( 5.8 L / 351 )

    1993-1996 FORD BRONCO

    • EngineType: ALL
    • SubModel: XL

    1978-1981 FORD F-350

    • Liter: 6.6
    • SubModel: RANGER LARIAT
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1983-1984 FORD E-150 ECONOLINE

    • Liter: 5.0
    • SubModel: XL
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1995 FORD F-350

    • Liter: 5.8
    • SubModel: EDDIE BAUER
    • CUI: 351
    • EngineType: V8 ( 5.8 L / 351 )

    1975-1979 FORD RANCHERO

    • EngineType: ALL
    • SubModel: SQUIRE

    1975-1979 FORD F-150

    • Liter: 7.5
    • SubModel: RANGER XLT
    • CUI: 460
    • EngineType: V8 ( 7.5 L / 460 )

    1982 FORD F-350

    • Liter: 6.6
    • SubModel: XLS
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1975-1982 FORD E-100 ECONOLINE

    • Liter: 5.8
    • SubModel: BASE
    • CUI: 351
    • EngineType: V8 ( 5.8 L / 351 )

    1978-1981 FORD F-100

    • Liter: 5.0
    • SubModel: RANGER LARIAT
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1975-1977 FORD MAVERICK

    • Liter: 5.0
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: F
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1985-1993 FORD MUSTANG

    • EngineType: ALL
    • SubModel: GT

    1977-1979 MERCURY COUGAR

    • EngineType: ALL
    • SubModel: XR-7

    1993-1996 FORD F-150

    • Liter: 5.0
    • SubModel: XLT
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1979-1982 FORD E-250 ECONOLINE

    • Liter: 5.0
    • SubModel: CHATEAU
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1993-1997 FORD F-350

    • Liter: 7.5
    • SubModel: XLT
    • CUI: 460
    • EngineType: V8 ( 7.5 L / 460 )

    1993 FORD BRONCO

    • EngineType: ALL
    • SubModel: CUSTOM

    1985-1992 FORD BRONCO

    • Liter: 5.8
    • SubModel: EDDIE BAUER
    • CUI: 351
    • EngineType: V8 ( 5.8 L / 351 )

    1977 FORD F-100

    • Liter: 5.0
    • SubModel: XLT
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1979-1980 FORD E-250 ECONOLINE CLUB WAGON

    • Liter: 5.0
    • SubModel: CHATEAU
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1975-1976 FORD E-250 ECONOLINE CLUB WAGON

    • EngineType: ALL
    • SubModel: CUSTOM

    1978 FORD F-100

    • Liter: 5.0
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: G
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1978-1979 FORD FAIRMONT

    • Liter: 5.0
    • SubModel: FUTURA
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1992-1996 FORD E-350 ECONOLINE CLUB WAGON

    • Liter: 7.5
    • SubModel: CHATEAU
    • CUI: 460
    • EngineType: V8 ( 7.5 L / 460 )

    1992-1996 FORD E-350 ECONOLINE CLUB WAGON

    • Liter: 5.8
    • SubModel: CHATEAU HD
    • CUI: 351
    • EngineType: V8 ( 5.8 L / 351 )

    1975-1978 FORD E-100 ECONOLINE CLUB WAGON

    • Liter: 5.8
    • SubModel: NORTHLAND
    • CUI: 351
    • EngineType: V8 ( 5.8 L / 351 )

    1977 FORD F-350

    • Liter: 7.5
    • SubModel: XLT
    • CUI: 460
    • EngineType: V8 ( 7.5 L / 460 )

    1982-1983 FORD F-250

    • Liter: 5.0
    • SubModel: XLS
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1978-1980 LINCOLN VERSAILLES

    • EngineType: ALL
    • SubModel: ALL

    1987-1991 FORD E-250 ECONOLINE CLUB WAGON

    • Liter: 7.5
    • SubModel: CUSTOM
    • CUI: 460
    • EngineType: V8 ( 7.5 L / 460 )

    1975-1978 FORD F-100

    • Liter: 5.0
    • SubModel: NORTHLAND
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1976-1978 FORD F-350

    • Liter: 7.5
    • SubModel: BASE
    • CUI: 460
    • EngineType: V8 ( 7.5 L / 460 )

    1975-1980 FORD E-250 ECONOLINE

    • Liter: 7.5
    • SubModel: CHATEAU
    • CUI: 460
    • EngineType: V8 ( 7.5 L / 460 )

    1985-1992 FORD F-250

    • Liter: 7.5
    • SubModel: XLT LARIAT
    • CUI: 460
    • EngineType: V8 ( 7.5 L / 460 )

    1980 LINCOLN MARK VI

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1975 FORD E-250 ECONOLINE

    • Liter: 5.0
    • SubModel: NORTHLAND
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    IS THIS THE LOCK OUT MECHCANIAL TIMMING?

    Asked by: tazchevy3
    No; it is a Cap-A-Dapt Rotor only
    Answered by: SteveM
    Date published: 2018-03-08

    Hello , will this part fit: ‘JEGS Performance Products 40066 SSR-II Pro Series Distributor for Ford 351C-460’   thanks  Stephen

    Asked by: Stephen456789
    This kit should fit the Jegs brand distributor as it uses a stock GM style rotor.
    Answered by: Rusty B
    Date published: 2017-10-16
    • y_2019, m_2, d_17, h_24CST
    • bvseo_bulk, prod_bvqa, vn_bulk_2.0.11
    • cp_1, bvpage1
    • co_hasquestionsanswers, tq_2
    • loc_en_US, sid_10001_10001_31518, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
    • clientName_jegs

    Items You Need

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    Motor Vehicles

    WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.

    Tools:

    WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.

    Electrical Cords

    WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.