Nitrous Outlet Weekend Warrior 4500 Hard Line Conversion Kit

Nitrous Outlet Weekend Warrior 4500 Hard Line Conversion Kit

Marsoni

M251S

$130.99

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

Nitrous Outlet Weekend Warrior 4500 Hard Line Conversion KitReplaces braided hose with Hardlines Includes 4500 flange boomerang solenoid bracket Fits . 122 . 178 nitrous and . 177 . 310 fuel solenoids Hardlines, fittings, and gasket included Clean, durable engine bay upgrade Upgrade your nitrous system with the Weekend Warrior Hardline Conversion Kit. This kit replaces the braided hose with clean, durable stainless hardlines for a sleek look and better reliability. The included boomerang style solenoid bracket

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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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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

Verified Purchase

Taylor 🤍

Lake Worth, 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.

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Reviewed in the United States on November 6, 2025

Verified Purchase

Edward W.

Whiting, US

★★★★★ 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

Verified Purchase

Justin Yeager

Carnegie, US

★★★★★ 5

Stay cool

Just what I needed, super fast shipping

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Reviewed in the United States on October 19, 2025

Verified Purchase

Crimson

Alexandria, US

★★★★★ 5

Outboard is Cooling

The repair kit arrived on time as scheduled. The kit contained everything needed to replace the Mercury 175 OptiMax impeller. The engine is cooling now and we are back on the water without issue. Easy replacement.

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Reviewed in the United States on July 5, 2023