# MSD 8503 - Digital E-Curve Pro Billet Distributors The e-curve distributor will drop right in your Ford 289/302 and fire up its performance. The e-curve distributor features a digital control module that manages the timing curve replacing the centrifugal advance springs and weights. This module lets you select from nearly 100 different advance curves, including a vacuum advance by turning two rotary dials! You can also set an RPM limit that will protect your engine from overrev damage caused by a missed shift or drive line failure. These distributors are also fit with a high-output ignition module so there is no need to run an external ignition box. This combination makes these distributors ideal for restored muscle cars and street rods to keep a stock or clean appearance under the hood. The e-curve distributor is topped with MSD Rynite molded cap and rotor and is supplied with a heavy-duty gear and a matching 3-pin Weathertight wiring harness. Key Features: - Digital E-Curve Distributor - Incl. Heavy Duty Gear/3-Pin Weathertight Wiring Harness The MSD team has a strong core of excellent engineers, technicians, assembly specialists who design, develop and manufacture a wide variety of products, including Ignition Controls, Coils, Timing Accessories and Spark Plug Wires and Accessories. All MSD products feature the finest ignition components anyone can install on their vehicle and are geared towards all auto enthusiasts! ### Vehicle Fitment Table | | | | | | | | --- | --- | --- | --- | --- | --- | | Year | Make | Model | Position | Fitment Precision | Note | | 1975 | FORD | BRONCO | | | CUSTOM, NORTHLAND, RANGER, SPORT 5.0L | | 1976 | FORD | BRONCO | | | CUSTOM, SPORT 5.0L | | 1977 | FORD | BRONCO | | | CUSTOM, SPORT 5.0L | | 1980 | FORD | BRONCO | | | CUSTOM, RANGER XLT 5.0L | | 1981 | FORD | BRONCO | | | CUSTOM, RANGER XLT 5.0L | | 1982 | FORD | BRONCO | | | CUSTOM, XLS, XLT LARIAT 5.0L | | 1983 | FORD | BRONCO | | | CUSTOM, XLS, XLT LARIAT 5.0L | | 1984 | FORD | BRONCO | | | CUSTOM, XLT 5.0L | | 1975 | FORD | E-100 ECONOLINE | | | BASE, CUSTOM, Chateau, NORTHLAND 5.0L | | 1979 | FORD | E-100 ECONOLINE | | | BASE, CUSTOM, Chateau 5.0L | | 1980 | FORD | E-100 ECONOLINE | | | BASE, CUSTOM, Chateau 5.0L | | 1981 | FORD | E-100 ECONOLINE | | | BASE, CUSTOM, Chateau 5.0L | | 1982 | FORD | E-100 ECONOLINE | | | BASE, CUSTOM, Chateau 5.0L | | 1983 | FORD | E-100 ECONOLINE | | | CUSTOM, XL 5.0L | | 1979 | FORD | E-100 ECONOLINE | | | CLUB WAGON BASE, CUSTOM, Chateau 5.0L | | 1980 | FORD | E-100 ECONOLINE | | | CLUB WAGON BASE, CUSTOM, Chateau 5.0L | | 1981 | FORD | E-100 ECONOLINE | | | CLUB WAGON BASE, CUSTOM, Chateau 5.0L | | 1982 | FORD | E-100 ECONOLINE | | | CLUB WAGON BASE, CUSTOM, Chateau 5.0L | | 1983 | FORD | E-100 ECONOLINE | | | CLUB WAGON CUSTOM, XL 5.0L | | 1975 | FORD | E-150 ECONOLINE | | | BASE, CUSTOM, Chateau, NORTHLAND 5.0L | | 1979 | FORD | E-150 ECONOLINE | | | BASE, CUSTOM, Chateau 5.0L | | 1980 | FORD | E-150 ECONOLINE | | | BASE, CUSTOM, Chateau 5.0L | | 1981 | FORD | E-150 ECONOLINE | | | BASE, CUSTOM, Chateau 5.0L | | 1982 | FORD | E-150 ECONOLINE | | | BASE, CUSTOM, Chateau 5.0L | | 1983 | FORD | E-150 ECONOLINE | | | CUSTOM, XL 5.0L | | 1984 | FORD | E-150 ECONOLINE | | | BASE, XL 5.0L | | 1985 | FORD | E-150 ECONOLINE | | | BASE, XL 5.0L | | 1979 | FORD | E-150 ECONOLINE | | | CLUB WAGON BASE, CUSTOM, Chateau 5.0L | | 1980 | FORD | E-150 ECONOLINE | | | CLUB WAGON BASE, CUSTOM, Chateau 5.0L | | 1981 | FORD | E-150 ECONOLINE | | | CLUB WAGON BASE, CUSTOM, Chateau 5.0L | | 1982 | FORD | E-150 ECONOLINE | | | CLUB WAGON BASE, CUSTOM, Chateau 5.0L | | 1983 | FORD | E-150 ECONOLINE | | | CLUB WAGON CUSTOM, XL 5.0L | | 1984 | FORD | E-150 ECONOLINE | | | CLUB WAGON BASE, XL, XLT 5.0L | | 1985 | FORD | E-150 ECONOLINE | | | CLUB WAGON BASE, XL, XLT 5.0L | | 1975 | FORD | E-250 ECONOLINE | | | BASE, CUSTOM, Chateau, NORTHLAND 5.0L | | 1979 | FORD | E-250 ECONOLINE | | | BASE, CUSTOM, Chateau 5.0L | | 1980 | FORD | E-250 ECONOLINE | | | BASE, CUSTOM, Chateau 5.0L | | 1981 | FORD | E-250 ECONOLINE | | | BASE, CUSTOM, Chateau 5.0L | | 1982 | FORD | E-250 ECONOLINE | | | BASE, CUSTOM, Chateau 5.0L | | 1983 | FORD | E-250 ECONOLINE | | | CUSTOM, XL 5.0L | | 1984 | FORD | E-250 ECONOLINE | | | BASE, XL 5.0L | | 1985 | FORD | E-250 ECONOLINE | | | BASE, XL 5.0L | | 1979 | FORD | E-250 ECONOLINE | | | CLUB WAGON BASE, CUSTOM, Chateau 5.0L | | 1980 | FORD | E-250 ECONOLINE | | | CLUB WAGON BASE, CUSTOM, Chateau 5.0L | | 1975 | FORD | E-350 ECONOLINE | | | BASE, CUSTOM, Chateau, NORTHLAND 5.0L | | 1979 | FORD | E-350 ECONOLINE | | | BASE, CUSTOM, Chateau 5.0L | | 1980 | FORD | E-350 ECONOLINE | | | BASE, CUSTOM, Chateau 5.0L | | 1981 | FORD | E-350 ECONOLINE | | | BASE, CUSTOM, Chateau 5.0L | | 1982 | FORD | E-350 ECONOLINE | | | BASE, CUSTOM, Chateau 5.0L | | 1979 | FORD | E-350 ECONOLINE | | | CLUB WAGON BASE, CUSTOM, Chateau 5.0L | | 1980 | FORD | E-350 ECONOLINE | | | CLUB WAGON BASE, CUSTOM, Chateau 5.0L | | 1975 | FORD | F-100 | | | CUSTOM, NORTHLAND, RANGER, RANGER XLT 5.0L | | 1976 | FORD | F-100 | | | BASE, CUSTOM, NORTHLAND, RANGER, RANGER XLT 5.0L | | 1977 | FORD | F-100 | | | BASE, CUSTOM, NORTHLAND, RANGER, RANGER XLT, XLT 5.0L | | 1978 | FORD | F-100 | | | BASE, CUSTOM, NORTHLAND, RANGER, RANGER LARIAT, RANGER XLT 5.0L | | 1979 | FORD | F-100 | | | BASE, CUSTOM, RANGER, RANGER LARIAT, RANGER XLT 5.0L | | 1980 | FORD | F-100 | | | CUSTOM, RANGER, RANGER LARIAT, RANGER XLT 5.0L | | 1981 | FORD | F-100 | | | CUSTOM, RANGER, RANGER LARIAT, RANGER XLT 5.0L | | 1982 | FORD | F-100 | | | CUSTOM, XL, XLS, XLT LARIAT 5.0L | | 1983 | FORD | F-100 | | | BASE, XL, XLS, XLT LARIAT 5.0L | | 1975 | FORD | F-150 | | | CUSTOM, NORTHLAND, RANGER, RANGER XLT 5.0L | | 1976 | FORD | F-150 | | | BASE, CUSTOM, NORTHLAND, RANGER, RANGER XLT 5.0L | | 1977 | FORD | F-150 | | | BASE, CUSTOM, NORTHLAND, RANGER, RANGER XLT, XLT 5.0L | | 1978 | FORD | F-150 | | | BASE, CUSTOM, NORTHLAND, RANGER, RANGER LARIAT, RANGER XLT 5.0L | | 1979 | FORD | F-150 | | | CUSTOM, RANGER, RANGER LARIAT, RANGER XLT 5.0L | | 1980 | FORD | F-150 | | | CUSTOM, RANGER, RANGER LARIAT, RANGER XLT 5.0L | | 1981 | FORD | F-150 | | | CUSTOM, RANGER, RANGER LARIAT, RANGER XLT 5.0L | | 1982 | FORD | F-150 | | | CUSTOM, XL, XLS, XLT LARIAT 5.0L | | 1983 | FORD | F-150 | | | BASE, CUSTOM, XL, XLS, XLT 5.0L | | 1984 | FORD | F-150 | | | BASE, CUSTOM, XL, XLT 5.0L | | 1985 | FORD | F-150 | | | BASE, CUSTOM, XL, XLT LARIAT 5.0L | | 1975 | FORD | F-250 | | | CUSTOM, NORTHLAND, RANGER, RANGER XLT 5.9L | ### FAQ **What part number is this?** The listed part number is 8503. **Should I confirm product specifications before ordering?** Yes. Compare the original product specifications and application details with the supplied information. ### Common Searches - MSD Ignition 8503 - 8503 specifications - MSD Ignition MSD 8503 - Digital E-Curve Pro Billet Distributors - 8503 automotive replacement ## Details - **Price:** 2136.48 CAD - **Vendor:** MSD Ignition - **Type:** MSD 8503 - Digital E-Curve Pro Billet Distributors - **Tags:** 8503, Automotive Performance, MSD 8503 - Digital E-Curve Pro Billet Distributors, MSD Ignition ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 2136.48 CAD | In stock | ## Images - MSD 8503 - Digital E-Curve Pro Billet Distributors --- > Source: [Standard Auto Part](https://www.standardautopart.com/products/msd-ignition-8503-msd-8503-digital-e-curve-pro-billet-distributors) > Updated: 2026-11-01