Fuel Pressure External Regulator Bypass Plug for LS1 Intake Manifold Rail

Fuel Pressure External Regulator Bypass Plug for LS1 Intake Manifold Rail

Marsoni

M251S

$21.95

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

Fuel Pressure External Regulator Bypass Plug for LS1 Intake Manifold RailConvert your LS1 fuel rail to work with an external regulator system This billet bypass plug is designed to replace the factory fuel pressure regulator on 19972006 5. 7L LS1 intake manifold fuel rails when converting to an aftermarket external fuel pressure regulator. Perfect for standalone fuel systems, this plug allows you to maintain the factory rail while gaining full control over fuel pressure via a remote regulator. The plug installs in place of

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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 🤍

Bozeman, 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.

Waukegan, 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