SPI CDI Box Ignition Control Module for Arctic Cat Snowmobiles

The SPI CDI box (capacitor discharge ignition module, also called an ignition control module or CDI ignition unit) is a replacement ignition component for Arctic Cat snowmobiles. It controls spark timing and delivery to the engine. It is a direct replacement for the original equipment CDI box.

Key Features:

• Replacement CDI boxes plug in and mount in the same way as the original equipment unit
• Some case designs differ slightly from the original, but they mount at the original mounting point
• Units that replace originals with 4-bolt mounting include an adapter plate
• Each unit is tested twice for quality
• Each part number cross-references to specific Arctic Cat OEM ignition module numbers

Installation Tip: Before you install a new CDI box, check all ignition components and connections to make sure they are within tolerance. Out-of-spec components can cause a new CDI box to fail early.

This SPI line gives snowmobile owners an affordable way to restore reliable ignition performance. Pick the correct child part number for your sled's OEM ignition module number.