MAS Ignition Distributor for LT1 5.7L V8 — Optispark-Style Replacement with Cap & Rotor, OEM Fit

MAS Ignition Distributor with cap and rotor is a direct-fit Optispark-style replacement for LT1 5.7L V8 engines in select 1994–1997 GM vehicles, restoring reliable ignition timing and electrical connections. The MAS distributor assembly comes complete with cap and rotor and is manufactured to meet OEM fit and function for LT1 V8 platforms. Built to the same service specifications as factory parts, this unit installs in place of the Optispark distributor found on many mid‑1990s GM models and is supplied with computer-tested electronic components and a one-year replacement warranty.

Which vehicles does this MAS distributor fit?

This MAS Ignition Distributor is intended for late-model LT1 5.7L V8 platforms from the mid‑1990s. It covers key GM models where the Optispark-style distributor was originally used, matching the original mounting and connector configuration for those cars.

• 1994–1996 Buick Roadmaster
• 1994–1996 Cadillac Fleetwood (where specified)
• 1995–1997 Chevrolet Camaro and Pontiac Firebird
• 1994–1996 Chevrolet Caprice and Impala; 1995–1996 Chevrolet Corvette

How does MAS ensure compatibility with OEM parts?

MAS designs this distributor to align with OEM dimensions, electrical pinouts, and trigger requirements so it can replace original part numbers without modification. The product undergoes electronic module testing before and after assembly to confirm correct operation and to reduce installation issues.

• Compatible with OEM references DST109 and KA-GM8381
• Cross-references: Hollander 606-02339, 84-1833, 30-1833, 1103916, 01104032, 1104032
• Factory-style cap and rotor included for plug-and-play installation

What are the key benefits of replacing your Optispark-style distributor?

Replacing a worn or failing distributor restores stable spark timing, improves starting consistency, and helps eliminate misfires or intermittent stalling associated with degraded components. A complete assembly with cap and rotor simplifies maintenance and reduces diagnostic time compared with partial component swaps.

• Complete kit: distributor, cap, and rotor for one installation
• Computer-tested electronics increase initial reliability
• One-year replacement warranty for added consumer protection

What should I check before purchasing and installing this MAS unit?

Confirm vehicle year, engine type (LT1 5.7L V8), and original distributor style to ensure compatibility. Inspect the connector and mounting flange orientation on your original unit and verify cross-reference numbers when in doubt.

• Verify vehicle fitment: model year and LT1 5.7L engine
• Match OEM numbers: DST109, KA-GM8381, or listed Hollander references
• Have basic hand tools and timing knowledge for installation and re-timing

Who this product is for: Mechanics, restorers, and DIY enthusiasts maintaining mid‑1990s GM LT1 V8 cars who need a full distributor replacement that mirrors factory form and function. Choose this MAS assembly when you want a complete cap-and-rotor solution with verified electronics and an OEM-replacement fit backed by a one-year warranty.

FAQ

Q: Does this MAS distributor include the cap and rotor?

A: Yes. The MAS distributor ships complete with cap and rotor for one ready-to-install assembly.

Q: Is this compatible with DST109 or KA-GM8381?

A: Yes. It cross-references DST109 and KA-GM8381 and several Hollander numbers listed in the product details.