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This is a genuine vintage OEM Yamaha Energy Induction System (YEIS) Air Chamber / Boost Bottle, designed to balance intake pulses and support smoother throttle response and fuel delivery on classic Yamaha two-stroke engines. Authenticity: * Genuine Yamaha factory part * Molded "YAMAHA" and "10W" casting marks Product Specifications * Brand: Yamaha OEM * Part Name: Air Chamber / Boost Bottle * Part Number: 10W-13581-00 * Material: High-density molded plastic * Color: Black Compatibility & Fitment Direct fitment for first-generation liquid-cooled Yamaha RD125LC 125cc models: * Yamaha RD125LC (10W / 1GV / 1GX / 1GL) — 1982, 1983, 1984, 1985, 1986 Note: Check the frame prefix and intake manifold setup before purchase. Similar Yamaha two-stroke boost bottles may differ in shape or mounting design.
Please verify compatibility with your specific motorcycle model before purchasing.
Cleaning Status
partially_cleaned
Cleaning Notes
Used surface cleaner
Worldwide shipping available
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Estimated delivery: 2-5 business days
All items are carefully packaged for safe transit
Items can be insured — contact us for more information
30-day return policy on most items
Items must be in original condition and packaging
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Yes, all parts with OEM numbers are genuine manufacturer parts. Check the specifications tab for the OEM number.
We offer a 30-day return policy. Items must be in original condition. See the Shipping tab for complete details.
Yes, we ship to most countries worldwide. Shipping costs and delivery times vary by location.
Parts are sold separately. We recommend professional installation for safety and warranty purposes.
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