Fuel Pressure External Regulator Bypass Plug w/ Gauge for LS1 Intake Manifold Rail

Fuel Pressure External Regulator Bypass Plug w/ Gauge for LS1 Intake Manifold Rail

Marsoni

M251S

$30.99

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

Fuel Pressure External Regulator Bypass Plug w/ Gauge for LS1 Intake Manifold RailBypass plug with integrated port for fuel pressure monitoring or sensors This bypass plug is designed to replace the factory fuel pressure regulator on LS1 intake manifold rails when using an external fuel pressure regulator. Unlike standard plugs, this version includes a 1 8" NPT threaded port to allow installation of a fuel pressure gauge or sensormaking it ideal for tuning or diagnostics. Compatible with 19972006 5. 7L LS1 engines. Includes 1 plug

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Arrived dirty as if someone whore it for more than a few days. Maybe I was mistaken, but I saw nothing about “previously used” on the Amazon page. Returned it. I would suggest that the company use quality control when it comes to shipping. The shoes seem find otherwise. I ordered 9.5 and it was just a bit tight. If I reorder I will go for size 10.

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Reviewed in the United States on June 11, 2026

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Fletch

Natrona Heights, US

★★★★★ 5

Overall Great.

Size: 10.5 Wide, Color: Black

Great product. Great value. Great style. Overall great.

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Reviewed in the United States on March 3, 2026

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B.J. G

Birmingham, US

★★★★★ 3

Decent Shoes with Misleading Description (Not Leather)

Size: 12 Wide, Color: Black, Size: 12 Wide, Color: Black

I only look for leather when I’m purchasing dress shoes. Under the description “details” on this item it lists the shoe as leather upper and inner lining. A photo shows “genuine Napa leather lining”. If you keep reading (which I have now that I’ve received the shoes) it shows “faux leather” in the small print and that is not “leather”. I run a small leather business and this irks me because it’s clearly false advertising. The details also show the product is made in Brazil but when they arrived today, the shoe tag shows “Made in China” and “Man Made upper and lower”. I don’t hate the shoes. They look nice. What I know is they won’t hold up over time like leather, which is why the description should be accurate and not misleading.

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Reviewed in the United States on March 28, 2026

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Kristian Gonzalez

Fort Morgan, US

★★★★★ 5

Feels great!

Color: Black, Size: Large

Very comfortable and fitting. The stretch of the fitted fabric is really breathable and the neck part isn’t constricting.

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Reviewed in the United States on April 13, 2026

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