
HEAT Digital HEI Module Fits Stock & MSD HEI Distributors
- HEAT Digital HEI Module
- Fits Stock & MSD HEI Distributors
- CARB E.O. #D-40-43

- Easily installs to non-computer controlled (4-Pin) HEI housings
- Built-in adjustable rev limiter can easily be set externally
- Advanced dwell control for improved high rpm output
- The Hottest HEI Module you buy-period!
- Produces an incredible 8.5 amps of juice!
- Adjust the rev limiter without removing the cap!
- Fits in stock HEI distributors
Items You Need

MSD IGNITION
GM HEI Distributor Coil CARB E.O. #D-40-37
Part Number : 121-8225

MSD IGNITION
Distributor Coil Dust Cover Extreme Output
Part Number : 121-84022

MSD IGNITION
Distributor Cap and Rotor Kit GM V8 HEI
Part Number : 121-84023
![GM HEI Power & Tach Feed Wires [12 in. Wire Leads]](https://www.jegs.com/images/mini_200/500/555/555-10552.jpg)
JEGS
GM HEI Power & Tach Feed Wires [12 in. Wire Leads]
Part Number : 555-10552

JEGS
HEI Advance Curve Kit For 1974-1979 GM HEI Distributors
Part Number : 555-40004

JEGS
Adjustable Vacuum Advance For GM V8 HEI Distributors
Part Number : 555-40003

JEGS
8.0mm Red Hot Pow'r Wires Small/Big Block Chevy Over Valve Covers or Under Headers & AMC 290-401 V8 W/HEI
Part Number : 555-40200

JEGS
8.0mm Black Pow'r Wires Small & Big Block Chevy Over Valve Covers or Under Headers & AMC 290-401 V8 W/HEI
Part Number : 555-402000

JEGS
Dielectric Grease, 1 oz. Tube
Part Number : 555-28020

JEGS
GM HEI Tach Feed Wire 12" Wire Lead
Part Number : 555-10551
![Distributor Cap and Rotor Kit for 1974-1990 GM HEI [Black]](https://www.jegs.com/images/mini_200/500/555/555-40017.jpg)
JEGS
Distributor Cap and Rotor Kit for 1974-1990 GM HEI [Black]
Part Number : 555-40017

JEGS
8.0mm Black Pow'r Wires Small & Big Block Chevy Over Valve Covers or Under Headers & AMC 290-401 V8 W/HEI
Part Number : 555-402000

MSD IGNITION
GM HEI Distributor Coil CARB E.O. #D-40-37
Part Number : 121-8225

MSD IGNITION
Distributor Coil Dust Cover Extreme Output
Part Number : 121-84022

MSD IGNITION
Distributor Cap and Rotor Kit GM V8 HEI
Part Number : 121-84023

MSD IGNITION
Distributor Rotor Extreme Output
Part Number : 121-84101

MSD IGNITION
Distributor Cap GM V8 HEI
Part Number : 121-84111

MSD IGNITION
HEI Low Resistance Bushing Fits 121-8365
Part Number : 121-8412
![GM HEI Power & Tach Feed Wires [12 in. Wire Leads]](https://www.jegs.com/images/mini_200/500/555/555-10552.jpg)
JEGS
GM HEI Power & Tach Feed Wires [12 in. Wire Leads]
Part Number : 555-10552

JEGS
HEI Advance Curve Kit For 1974-1979 GM HEI Distributors
Part Number : 555-40004

JEGS
Adjustable Vacuum Advance For GM V8 HEI Distributors
Part Number : 555-40003

JEGS
8.0mm Red Hot Pow'r Wires Small/Big Block Chevy Over Valve Covers or Under Headers & AMC 290-401 V8 W/HEI
Part Number : 555-40200

JEGS
Wire Crimping Pliers and Stripping Tool
Part Number : 555-80575

JEGS
Angled Flush Cutter - 5 in.
Part Number : 555-W30763

JEGS
105-Piece Heat Seal Crimp Connector Kit
Part Number : 555-10700
![61-Piece Heat Shrink Tubing Kit [Black]](https://www.jegs.com/images/mini_200/500/555/555-10630.jpg)
JEGS
61-Piece Heat Shrink Tubing Kit [Black]
Part Number : 555-10630

JEGS
Mini Butane Torch (Empty)
Part Number : 555-80720
![Crimp Connector Kit [160 Pieces]](https://www.jegs.com/images/mini_200/500/555/555-10705.jpg)
JEGS
Crimp Connector Kit [160 Pieces]
Part Number : 555-10705
![Colored Electrical Tape [5 pack]](https://www.jegs.com/images/mini_200/500/555/555-w549.jpg)
JEGS
Colored Electrical Tape [5 pack]
Part Number : 555-W549

JEGS
Dielectric Grease, 1 oz. Tube
Part Number : 555-28020

JEGS
GM HEI Tach Feed Wire 12" Wire Lead
Part Number : 555-10551
![Distributor Cap and Rotor Kit for 1974-1990 GM HEI [Black]](https://www.jegs.com/images/mini_200/500/555/555-40017.jpg)
JEGS
Distributor Cap and Rotor Kit for 1974-1990 GM HEI [Black]
Part Number : 555-40017

JEGS
8.0mm Black Pow'r Wires Small & Big Block Chevy Over Valve Covers or Under Headers & AMC 290-401 V8 W/HEI
Part Number : 555-402000

MSD IGNITION
GM HEI Distributor Coil CARB E.O. #D-40-37
Part Number : 121-8225

MSD IGNITION
Distributor Coil Dust Cover Extreme Output
Part Number : 121-84022

MSD IGNITION
Distributor Cap and Rotor Kit GM V8 HEI
Part Number : 121-84023

MSD IGNITION
Distributor Rotor Extreme Output
Part Number : 121-84101
⚠️ Warning
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.

