Ignitions and Electrical› Starters
QuadBoss
QuadBoss 18-21 Yamaha YFM450 Kodiak 4x4/EPS Starter Solenoid & Relay
SKU: Q00Q 402039
Easy — 1–2 hours
Description
Part #: 402039
It's time to get started. These solenoids and relays offer maximum magnetic pull strength for reliable starts, longer life and reduced voltage drop, with plated brackets and canisters to eliminate corrosion
Starter Solenoid & Relay
MIA's Description
This solenoid and relay meets or exceeds original manufacturer specifications and is 100% OEM interchangeable, requiring no modifications for installation. It is constructed with 100% copper windings, a copper contact disc, and solid copper terminals.
Fitment
Fitment Guaranteed
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on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | QuadBoss |
| Part Number | Q00Q 402039 |
Videos
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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