CDI Module Compatible with 2002-2004 Yamaha Warrior 350 YFM350X 348cc Air-Cooled SOHC 2-Valve 6-Speed Electric Start Sport ATV 4-Stroke Replaces 5NF855400000 5YT-85540-00-00

YAMAHA WARRIOR 350 YFM350X — 348cc AIR-COOLED 4-STROKE SOHC SPORT ATV:
• Warrior 350 YFM350X 348cc Air-Cooled 4-Stroke SOHC 2-Valve 6-Speed w/Reverse Electric Start Sport ATV (2002-2004)
• Warrior 350 California YFM350X 348cc Air-Cooled SOHC 2-Valve 6-Speed Electric Start Sport ATV (2002-2003)

OEM PART NUMBERS:
• Yamaha: 5YT-85540-00-00 / 5YT855400000 (Cross-Reference)
• Yamaha: 5NF-85540-00-00 / 5NF855400000 (Warrior 350 2002-2004)

Yamaha Warrior 350 YFM350X CDI Module — 348cc SOHC DC-CDI Ignition:
Premium replacement CDI module for the 2002-2004 Yamaha Warrior 350. Replaces Yamaha OEM 5NF-85540-00-00 and cross-reference 5YT-85540-00-00. The CDI module is the brain of the ignition system, controlling spark timing for optimal combustion across the RPM range. When the CDI fails, symptoms include no spark, intermittent misfiring, engine dying under load, or failure to start. The Warrior 350 engine displaces 348cc with SOHC valvetrain, producing approximately 19 HP at the rear wheel through a 6-speed manual gearbox with reverse. The Warrior was the final year of a legendary 17-year production run (1987-2004), replaced by the Raptor 350 in 2004. Manufactured to OEM standards for reliable ignition performance.

ADDITIONAL CROSS-REFERENCES:
• Product Type: CDI Module (Capacitor Discharge Ignition)
• Condition: New
• Bore x Stroke: 83.0 x 64.5mm
• Compression Ratio: 9.2:1
• Carburetor: Mikuni 36mm BTM with Accelerator Pump
• Power: 19 HP (rear wheel) / 28 PS @ 7,000 RPM (crank)
• Start: Electric Start
• Top Speed: 63 MPH (stock)


⚠️ IMPORTANT: Verify OEM part number before ordering to ensure proper fitment.