This is a genuine OEM Yamaha Autolube 2-stroke oil injection pump manufactured by Mikuni. This precision metering pump automatically delivers the correct amount of 2-stroke oil to the engine according to throttle position and engine RPM. It features the distinctive “181” casting mark on the black top pulley, US patent number 3302752 stamped into the body, and the original white nylon drive gear that connects to the engine’s internal drive system. Fitment and Compatible Models This pump is designed for late-1980s Yamaha small-displacement 2-stroke motorcycles. Primary Compatibility: Yamaha DT50 / DT50LC: 1986, 1987, 1988, 1989 Yamaha DT80 / DT80LC: 1986, 1987, 1988, 1989 Model Prefixes: 5R2 17W 53W Example OEM Reference: 5R2-13101-00-00 Although the housing may resemble pumps used on GT80, MX80, or RD80 models, the internal calibration, stroke length, and cable pulley setup are specifically matched to the DT50 and DT80 engines.
Please verify compatibility with your specific motorcycle model before purchasing.
Cleaning Status
partially_cleaned
Cleaning Notes
Used anti rust
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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.
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Parts are sold separately. We recommend professional installation for safety and warranty purposes.
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$34.75
$34.75
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