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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Don’t get me wrong it’s not a horrible product but these wires have an extreme amount of resistance to them, and once they get hot they drop voltage drastically. It was nice it came with a bunch of eyelets and made it easy to assemble but unfortunately once they were over 100F temp (live in Florida so cars get way hotter than that on the inside) the voltage would go from a normal 12.5-13.5v all the way down to 8v. Partially my fault I did not notice they were CCA wire instead description, would not recommend for automotive use.

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Reviewed in the United States on June 25, 2025

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Freddy

Birmingham, US

★★★★★ 5

Good price works great

Great product

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Reviewed in the United States on May 21, 2026

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Chris Crittenden

San Leandro, US

★★★★★ 5

Amplifier

Works good

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Reviewed in the United States on April 29, 2026

Verified Purchase

Shawn

New York, US

★★★★★ 1

Low quality. Recommend something from a better brand.

Low quality. Seemed fine until the first one I ordered one of the terminals broke off with very little tightening force. The replacement i had ordered worked for a few days then quit working altogether. Overall disappointed.

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Reviewed in the United States on April 8, 2026

Verified Purchase

Ailyn

Chelsea, US

★★★★★ 5

Bueno

Lo recomiendo

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Reviewed in the United States on March 21, 2026