Keep your Yamaha ATV starting reliably with the QuadBoss Starter Solenoid & Relay (Part #402025) — a direct OEM replacement engineered for maximum conductivity and long-term durability. No modifications required; it installs straight onto compatible Yamaha YFM models right out of the box.

Built for Performance: Solid copper terminals and copper contact discs minimize voltage drop and heat buildup, while 100% copper windings deliver maximum magnetic pull strength for dependable cold and hot starts. Corrosion-resistant plated brackets and canisters hold up in muddy, wet, and high-humidity off-road environments.

OEM-Grade Fit: Meets or exceeds original Yamaha specifications. Compatible with YFM250 Bear Tracker, YFM350 Grizzly IRS, YFM400 Big Bear & Grizzly, YFM450 Grizzly, and YFM660F Grizzly (1999–2014). Backed by a 1-year manufacturer's warranty.

Features:

• 100% OEM interchangeable — no modifications needed
• Solid copper terminals & contact discs for maximum conductivity
• 100% copper windings for efficient electrical flow and longevity
• Corrosion-resistant plated brackets and canisters
• Meets or exceeds OEM specifications
• 1-year manufacturer's warranty

Fitment:

1999 Yamaha YFM250 Bear Tracker Base
2000–2004 Yamaha YFM400 Big Bear 2x4 Base
2002–2008 Yamaha YFM660F Grizzly 4x4 Base
2007–2012 Yamaha YFM350 Grizzly IRS 4x4 Auto Base
2007–2008 Yamaha YFM400 Grizzly 4x4 Auto Base
2007–2014 Yamaha YFM450 Grizzly 4x4 Auto Base

Brand: QuadBoss | MPN: 402025 | UPC: 887337349404