PowerMaster 3" Alternator Pulley

Marsoni

M251S

$62.00

Get it in 3 business days with 1 day shipping. Friday, May 29

PowerMaster 3" Alternator Pulley3" Alternator Pulley for Powermaster Alternators Upgrade your charging system with this 3 inch alternator pulley designed for Powermaster alternators. Increasing the pulley diameter helps slow alternator RPM at higher engine speedsreducing heat, drag, and wear while maintaining reliable charging performance. Features: Precision machined 3" diameter Direct fit for Powermaster alternators Slows alternator speed for improved durability at high RPM Ideal

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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
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Been going through these for about two years now across multiple replacements and they perform just as well as the official Eufy parts. Main brush, side brushes, filters, dust bags, mop — all fit correctly and do the job without any issues. Honestly if you’ve got a Eufy Omni S1 Pro, just buy these instead. No reason to pay extra for the official kit when these hold up just as well over time. No complaints

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Reviewed in the United States on March 22, 2026