YFZ 450 CDI Box Replacement Drop In 12 Pin 2 Plug Ignition Control Module For 2004 2005 2006 2007 2008 2009 With 5TG-85540-00-00 And 5TG-85540-10-00 Direct Fit Ready To Ship

Drop-In 12-Pin CDI Box for Yamaha YFZ 450 (2004-2009)
✔️ 1 pc, 2-plug 12-pin, sealed, direct-fit CDI for 2004-2009 YFZ450

This is a direct-fit replacement CDI box for the Yamaha YFZ 450 quad, covering 2004-2009 models. It replaces part numbers 5TG-85540-00-00 and 5TG-85540-10-00, offering a simple, drop-in repair with the same mounting and electrical connections as the OEM setup.

✅ Fits 2004-2009 Yamaha YFZ 450 models with 2 plug, 12-pin configuration
✅ Direct-fit replacement with identical mounting points and connectors
✅ Dimensions: H 36 mm, L 86 mm, W 81 mm
✅ Replaces OEM numbers 5TG-85540-00-00 and 5TG-85540-10-00
✅ Ready to ship, one-piece pack

💡 What is a CDI box used for in a motorcycle ignition system?

It is a handy engine-management component that controls ignition timing and spark delivery to optimize starting, fueling, and power across RPMs.

• Controls ignition timing and spark delivery for consistent starts
• Matches a 2-plug, 12-pin Yamaha CDI setup for easy swap
• Helps restore timing accuracy after CDI failure or misfire
• Works with OEM part numbers 5TG-85540-00-00 and 5TG-85540-10-00