SPI CDI Modular for Polaris Indy 400 500 Classic SKS 1990-1991 Replaces 3083989

CDI Modular for Polaris

This CDI modular replaces OEM part number 3083989 and manages ignition timing for Polaris Indy 400, 500, Classic, and SKS snowmobiles from 1990-1991.

Overview

This CDI modular is an electronic ignition control unit designed for Polaris two-stroke snowmobile engines. It ensures reliable spark timing and improved engine performance in cold-weather riding conditions. The CDI modular directly replaces the factory 3083989 module.

Built For Performance

• Direct plug‑and‑play replacement for OEM 3083989
• Solid‑state circuitry for consistent spark under load
• Weather‑resistant housing protects against snow and moisture
• Engineered to meet or exceed OEM electrical specifications
• Compact design fits existing mounting location

Fits These Machines

• for Polaris Indy 400 (1990-1991)
• for Polaris Indy 500 (1990-1991)
• for Polaris Classic (1990-1991)
• for Polaris SKS (1990-1991)

On-The-Job Use

• Trail riding in deep snow and cold temperatures
• Backcountry exploration where consistent ignition is critical
• Replacing a failed OEM CDI module during winter maintenance
• Restoring older Polaris snowmobiles to reliable running condition

Specs At A Glance

Good To Know

Q: Will this CDI modular work on a Polaris Indy 600? A: This unit is specifically designed for the 400 and 500 models listed; always verify engine displacement and model year before installation.

Q: Do I need to replace the stator or coil at the same time? A: Not necessarily—only if those components show signs of wear. The CDI modular alone often restores spark function.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.