★★★★★ 5
Perfect fit
Worked great for a 1965 mercury thunderbolt 150hp
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Reviewed in the United States on June 3, 2025
Mishimoto Pulse Width Modulation Fan Controller - Black
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Mishimoto Pulse Width Modulation Fan Controller - BlackSKU: MMFAN PWM UBK UPC: 840197718360 Mishimoto Pulse Width Modulation Fan Controller Black The Mishimoto Pulse Width Modulated PWM Fan Controller in black provides precise engine temperature management for any vehicle with electric cooling fans. This universal design works across all makes models and years equipped with 12V electric fans delivering reliable speed control from 0 to 100 percent. It monitors coolant temperature adjusts fan speed
Quick Dispatch:
Your Mishimoto Pulse Width Modulation Fan Controller - Black orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
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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.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
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4.3 ★★★★★
Based on 1334 reviews
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Product Reviews
★★★★★ 5
MerCruiser Replacement Parts
OEM quality MerCruiser Alpha 1 Gen1 replacement part. Everything you need and some things you don't because it's a universal kit that works for several models.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 19, 2025
★★★★★ 5
OEM is always the answer
No reason not to go OEM for this! Came with every possible gasket and seal I could need. Specifically for my Alpha One Gen 1 it took maybe 25-30 min to completely install.
While you’re there check the base plate for wear and the other surrounding items like your water tube. Rather keep the lower unit off for an extra day to get another part than a catastrophic failure.
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Reviewed in the United States on September 9, 2025
★★★★★ 5
Husbands things
My husband bought this. I don’t know much about it but he has zero complaints. He bought it for a boat. He has fixed up 2 boats, sold one & we kept the other. So he apparently knows what to buy & how to use it.
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Reviewed in the United States on November 6, 2025
★★★★★ 4
Amazon is easy and fast . No problems the oarts was exactly as described.
liked that everything was in one bag . and could make sure everything was changed .
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Reviewed in the United States on August 3, 2020
