
QuadBoss · New
QuadBoss Suzuki LT-F250/LT-Z250 / Yamaha YFM250/400/660/YXR660 Air Cut-Off Valve Kit
MPN 420584 · Store SKU qbs420584
Supplier stock checked 11/7/2026, 9:03:37 AM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
Shipping & returns ↗This policy does not limit rights required by law.Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.
Product details
Improperly functioning air cut-off valves can stick open or closed, causing poor running conditions and popping during deceleration. Air Cut-Off Valve Kit includes O-rings, diaphragm, spring and screws necessary to rebuild the air cut-off valve circuit. QuadBoss 420584 Carburetor Air Cut-Off Valve Kit
Manufacturer fitment & guides
Check 420584 against the manufacturer’s application information below.
A manufacturer application guide is not available for this listing. Request the exact application from JuiceBuilt before payment.
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