Central Engine Control Module – Premium electronic replacement engineered to factory specifications
Get your classic Polaris powerplant firing instantly again! This High-Performance CDI (Capacitor Discharge Ignition) Unit is the electrical brain responsible for managing ignition timing across an extensive lineup of vintage Polaris ATVs and UTVs manufactured between 1994 and 2003. This module is built to match the original factory part number 3085087.
The CDI box calculates and stores electrical energy, sending a microsecond-precise impulse to the ignition coil to release a hot, consistent spark. Solid-state electronics face heavy wear from under-hood heat cycles and rugged trail shaking. A failing CDI typically triggers random stalling once the engine warms up, harsh cold starts, backfiring, or a complete lack of spark. This plug-and-play unit restores crisp throttle response and efficient fuel combustion.
Technical Specifications & Details
Component: CDI Module / Ignition Control Unit / Black Box.
OEM Part Number: 3085087.
Function: Directs spark timing and delivers voltage to the ignition loop.
Material: Shockproof, moisture-sealed resin housing to withstand heavy off-road utility use.
Compatibility: Tailored for classic Polaris 400cc (2-Stroke) and 500cc (4-Stroke) lines including Sportsman, Scrambler, Magnum, and Ranger (1994–2003).
Visual Check: Before installation, perform a visual check. Carefully match the wire count, color codes, and terminal plug styles with your original stock box, as mid-year factory updates can occur.
Disconnect Power: Always disconnect the vehicle's battery (negative terminal first) before swapping electrical modules to shield the internal transistors from power surges. Clean the terminal plugs and apply dielectric grease into the sockets to block out mud and trail wash. Ensure the CDI is bolted firmly to its factory frame bracket to minimize vibration damage.
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