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Pulsar 4 Unloader w/ Switch
Pulsar 4 Unloader w/ Switch
Pulsar 4 Unloader w/ Switch
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Pulsar 4 Unloader w/ Switch

Marsoni M251S
Sale price$120.85
Pay 4 payments of $30.21 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Pulsar 4 Unloader w/ SwitchFEATURES: Sturdy brass and steel construction Multiple connections for easy installation Powerful spring action provides reliable pressure adjustment Bolt on pressure switch Hexagonal shaped check valve avoids jamming O rings before threads so threads do not see pressure New fitting shape, ball always in axis with the seat Larger porting throughout unloader to allow higher flow Knob is fitted with a locknut for minimum and maximum pressure regulation
Easy Shipping

Quick Dispatch:

Your Pulsar 4 Unloader w/ Switch orders ship within 1-2 business days.

Delivery Options:

  • Standard: 3-7 business days
  • Fast: 2-3 business days
  • Express: 1-2 business days

Order Tracking:

You'll receive a tracking link by email once your Pulsar 4 Unloader w/ Switch ships.

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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
4.8 ★★★★★
Based on 158 reviews
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Product Reviews
A
Verified Purchase
Amazon Customer
Louisville, US
★★★★★ 5
Nice quality
Had to return due to our mistake but the mechanic said it was good quality. Ordered the correct size and worked great.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 30, 2025
K
Verified Purchase
katelyn traut
Houston, US
★★★★★ 5
Perfect fit
Worked great for a 1965 mercury thunderbolt 150hp
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 3, 2025
L
Verified Purchase
Lawrence Brown
Pawtucket, US
★★★★★ 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
O
Verified Purchase
Owen Shirk
Louisville, US
★★★★★ 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.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 9, 2025
T
Verified Purchase
Taylor 🤍
West Palm Beach, US
★★★★★ 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.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 6, 2025

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