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MSD Rotor Assembly, Adjustable 8421

MSD Rotor Assembly, Adjustable 8421
$97.99 ea
NEWARRIVING SOONEstimated Ship Date 12/31/2024 (If Ordered Today)66 Available from HOLLEY PERFORMANCE PRODUCTS as of 12/13/2024
Model: 4017735
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
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Rotor is adjustable. Ideal for Atomic TBI users when controlling the timing.
Features:
  • Rotor phasing can be adjusted.
  • Ideal when Atomic TBI is controlling the timing.

About MSD Ignition

Racers never stop experimenting as they search for every way to wring out more power or handling performance to to gain an edge over the competition. The team at MSD is no different as we strive to deliver the products you  need to meet your performance goals. We continue to innovate and invent components and technology that deliver  performance and reliability with products that are easy to use and install. 

Over the course of 40-plus years, MSD Performance has been driving the development of innovative components  that helped shape the way our cars race and perform. From super speedways to road courses, land speed racing to  top fuel dragsters, and of course your traditional hot rod, MSD has provided the components to fire nearly anything in  motorsports.

MSD was the first company to develop and offer the multiple sparking, capacitive discharge ignition for engines. The line of MSD 6-Series Ignitions are the most popular aftermarket ignitions in the world due to our race-proven performance on the track and our reliability on the street!

Early on, MSD focused squarely on ignition systems with revolutionary products like the multiple sparking CD ignition, timing and rev controls, billet aluminum distributors and the Pro-Mag, an incredible breakthrough in power  and endurance. 

Today MSD is developing electronics for your entire powertrain. The Atomic EFI systems for the LS engine platform and throttle body are now complemented with a transmission controller. Our DynaForce Starters and Alternators  ensure that your engine cranks over to fire up and the Alternators keep it charged. MSD is poised to deliver components that work and communicate together to provide performance and value.

Vehicle Fitment:

The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
Make Model Submodel Years Engine Fitment Notes
Ford Mustang II Base 1975 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang II Base 1976 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang II Base 1977 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang II Base 1978 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang II Ghia 1975 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang II Ghia 1976 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang II Ghia 1977 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang II Ghia 1978 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang II 1975 5.0L / 302 / V8
Ford Mustang II 1976 5.0L / 302 / V8
Ford Mustang II 1977 5.0L / 302 / V8
Ford Mustang II 1978 5.0L / 302 / V8
Ford Mustang Base 1979 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang GLX 1982 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang GL 1982 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang GT-350 20th Anniversary 1984 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang GTS 1995 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang GT 1982 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang GT 1983 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang GT 1984 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang GT 1985 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang GT 1986 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang GT 1987 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang GT 1988 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang GT 1989 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang GT 1991 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang GT 1992 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang GT 1993 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang GT 1994 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang GT 1995 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang Ghia 1979 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang LX 1984 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang LX 1985 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang LX 1986 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang LX 1987 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang LX 1988 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang LX 1989 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang LX 1991 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang LX 1992 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang LX 1993 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang L 1982 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang L 1984 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang SVT Cobra R 1993 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang SVT Cobra 1993 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang SVT Cobra 1994 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang SVT Cobra 1995 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang 1979 5.0L / 302 / V8
Ford Mustang 1980 4.2L / 255 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang 1981 4.2L / 255 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang 1982 4.2L / 255 / V8
5.0L / 302 / V8
Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Ford Mustang 1983 5.0L / 302 / V8
Ford Mustang 1984 5.0L / 302 / V8
Ford Mustang 1985 5.0L / 302 / V8
Ford Mustang 1986 5.0L / 302 / V8
Ford Mustang 1987 5.0L / 302 / V8
Ford Mustang 1988 5.0L / 302 / V8
Ford Mustang 1989 5.0L / 302 / V8
Ford Mustang 1991 5.0L / 302 / V8
Ford Mustang 1992 5.0L / 302 / V8
Ford Mustang 1993 5.0L / 302 / V8
Ford Mustang 1994 5.0L / 302 / V8
Ford Mustang 1995 5.0L / 302 / V8
5.8L / 351 / V8
Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Capri Base 1979 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Capri Ghia 1979 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Capri RS 1982 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Capri RS 1983 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Capri RS 1984 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Capri RS 1985 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Capri 1979 5.0L / 302 / V8
Mercury Capri 1980 4.2L / 255 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Capri 1981 4.2L / 255 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Capri 1982 4.2L / 255 / V8
5.0L / 302 / V8
Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Capri 1983 5.0L / 302 / V8
Mercury Capri 1984 5.0L / 302 / V8
Mercury Capri 1985 5.0L / 302 / V8
Mercury Capri 1986 5.0L / 302 / V8
Mercury Cougar Base 1977 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Cougar Base 1978 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Cougar Base 1979 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Cougar Base 1983 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Cougar Base 1984 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Cougar Base 1985 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Cougar Base 1986 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Cougar Brougham 1977 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Cougar LS 1983 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Cougar LS 1984 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Cougar LS 1985 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Cougar LS 1986 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Cougar LS 1987 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Cougar LS 1988 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Cougar LS 1991 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Cougar LS 1992 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Cougar XR-7 1977 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Cougar XR-7 1978 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Cougar XR-7 1979 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Cougar XR-7 1980 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Cougar XR-7 1981 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Cougar XR-7 1987 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Cougar XR-7 1988 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Cougar XR-7 1991 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Cougar XR-7 1992 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Cougar XR-7 1993 5.0L / 302 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Cougar 1977 5.0L / 302 / V8
5.8L / 351 / V8
6.6L / 400 / V8
Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Cougar 1978 5.0L / 302 / V8
5.8L / 351 / V8
6.6L / 400 / V8
Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Cougar 1979 5.0L / 302 / V8
5.8L / 351 / V8
Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Cougar 1980 4.2L / 255 / V8
5.0L / 302 / V8
Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Cougar 1981 4.2L / 255 / V8
5.0L / 302 / V8
Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Cougar 1982 4.2L / 255 / V8 Cap-A-Dapt Rotor Assembly; Adjustable; For MSD Distributor Only;
Mercury Cougar 1983 5.0L / 302 / V8
Mercury Cougar 1984 5.0L / 302 / V8
Mercury Cougar 1985 5.0L / 302 / V8
Mercury Cougar 1986 5.0L / 302 / V8
Mercury Cougar 1987 5.0L / 302 / V8
Mercury Cougar 1988 5.0L / 302 / V8
Mercury Cougar 1991 5.0L / 302 / V8
Mercury Cougar 1992 5.0L / 302 / V8
Mercury Cougar 1993 5.0L / 302 / V8

Specifications:

Color Red
Distributor Type Accessories
Emission Code 5
Part Type Distributor Rotor
Product Type Distributor Rotor
Proposition 65 www.P65Warnings.ca.gov
Warranty Limited 1 Year Warranty

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MSD Rotor Assembly, Adjustable 8421:
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