JDMSPEED New Ignition Module D1906HT LX301 Replacement for GM HEI 4-Pin | Buick, Chevy, Pontiac 1974-1988

Premium replacement ignition module for GM HEI 4-Pin distributors

JDMSPEED presents the D1906HT LX301 ignition module as a purpose-built replacement designed for classic GM engines. Built to withstand the heat and vibration of busy engine bays, this module supports a wide range of 1974–1988 Buick, Chevrolet, Pontiac models and more. It’s crafted to be a dependable core for ignition control in aging electrical systems, offering a practical upgrade without altering your vehicle’s original character.

Key benefits

• Copper slug heat sinks help dissipate heat more efficiently in hot engine bays, reducing potential hot spots that can impact performance.
• Wide operating temperature range (-40°C to +125°C) supports dependable operation under demanding conditions.
• Four-terminal design connects to distributor and coil for a compact, integrated control module.
• Rugged construction with extensive cross-compatibility across GM part numbers, simplifying restoration and replacement.

What you get

• 1x ignition module
• Copper slug heat sinks to aid cooling
• Durability tested across a broad temperature range

Design, compatibility, and installation

The module uses a 4-terminal interface and mounts with two screws (not included). It replaces multiple part numbers including D1906, LX301, LX-301, and related GM designations across Buick, Chevrolet, Pontiac, Cadillac, Oldsmobile, and AMC lines. This broad cross-compatibility helps streamline sourcing for restorations or repairs.

Real-world use cases

Ideal for classic muscle cars, daily drivers from the 1970s and 1980s, and restoration projects where reliable ignition control supports steady timing and engine response. Results may vary based on the rest of the ignition and electrical system, but the module is designed to support stable operation over time.

Compatibility snapshot

Fits a broad range of GM vehicles from 1974–1988 across Buick, Chevrolet, and Pontiac lines, including Bel Air, Camaro, Caprice, LeSabre, Riviera, Eldorado, Fleetwood, and more. Always verify distributor type and cross-check the listed part numbers in the product details.