YSR50 Billet Intake Manifold

Marsoni

M251S

$46.99

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

YSR50 Billet Intake ManifoldFinally, no more floppy rubber boots. These west coast machined billet adapters will not only hold up to years of abuse, but they'll also work with all carb sizes from 15mm to 34mm. Grab one of our stage6 boots, or use your own. The spacing on the rubber spigot is 60mm between holes. Carburetor adapters (spigot style) available here Looking for a new reed spacer? Check it out here Need replacement reed valve gaskets? Grab a set here Have a Mikuni with

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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]
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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 🤍

Port Orchard, 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.

Bozeman, 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