Standard Ignition JR-109 Distributor Rotor

Distributor Rotor for Mitsubishi and Dodge Applications

Standard Ignition JR-109 is a distributor rotor built for select Mitsubishi, Dodge, and Plymouth ignition systems from the early 1990s through 1995. It uses a push-on mount with a black plastic rotor body and aluminum contact material for direct distributor service on listed vehicles.

Key Features

• Part number: JR-109
• Push-on mount type for listed distributor applications
• Black plastic rotor construction
• Aluminum contact material
• Distributor rotor contents only
• Standard Ignition replacement for select Mitsubishi Eclipse, Mirage, Dodge Colt, and Plymouth Laser applications

Detailed Product Information

This Standard Ignition distributor rotor is specified for ignition distributor service on 1990-1994 Mitsubishi Eclipse, 1990-1994 Plymouth Laser, 1991-1993 Mitsubishi Mirage with distributor No. MD153199, 1991 Dodge Colt with coil inside distributor, 1992-1994 Dodge Colt, and 1994 Mitsubishi Mirage with Federal Emissions. It also fits 1995 Dodge Colt and 1995 Mitsubishi Mirage for Canada or Federal Emissions applications. The JR-109 is a direct-fit rotor for the listed distributor configurations and is identified by interchange references including CR925 and D689.

This part cross-references Standard Ignition JR109T and Duralast D689 for the same application.

Common Problems This Part Can Address

• Engine misfire caused by worn rotor contact surfaces
• Weak or inconsistent spark transfer inside the distributor
• Hard starting related to distributor ignition wear
• Rough idle from deteriorated rotor material
• Ignition performance issues on listed Mitsubishi and Dodge models

Installation Notes and Tips

Verify distributor number, emissions package, and engine configuration before installation. This rotor uses a push-on mount and does not include mounting hardware. Inspect the distributor cap, terminals, and ignition components for wear at the same time to help maintain consistent spark delivery. Confirm the old rotor orientation before removal so the replacement seats correctly.

Quality Assurance

Standard Ignition supplies ignition service parts for OE-style replacement applications, and JR-109 is built to match the listed distributor fitments for Mitsubishi, Dodge, and Plymouth vehicles.