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Fuel Pressure External Regulator Bypass Plug for LS1 Intake Manifold Rail
Fuel Pressure External Regulator Bypass Plug for LS1 Intake Manifold Rail
Fuel Pressure External Regulator Bypass Plug for LS1 Intake Manifold Rail
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Fuel Pressure External Regulator Bypass Plug for LS1 Intake Manifold Rail

Marsoni M251S
Sale price$21.95
Pay 4 payments of $5.49 a month.Shop Pay
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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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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4.1 ★★★★★
Based on 162 reviews
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Rt
Birmingham, US
★★★★★ 5
Worth it
Size: 3X-Large, Color: Black
This shirt is light weight , comfortable, great quality and I would definitely get more
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026
B
Verified Purchase
Bajecco
Massapequa, US
★★★★★ 4
Great Shirt, but a bit Heavy
Size: Large, Color: Black
Very comfortable shirt and good quality. My only gripe is that the material is a bit heavier than I'd like.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 19, 2026
T
Verified Purchase
Travis bowers
Pawtucket, US
★★★★★ 5
Perfect
Size: X-Large, Color: White
Quality is amazing, soft, comfortable and is light in weight. Fit is perfect for my frame and neck, love the style and was purchased at a good price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 30, 2026
M
Verified Purchase
Michael Vavra
Fort Morgan, US
★★★★★ 5
Mock T-shirt
Size: Large, Color: White
Fit really well, liked the material.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 21, 2026
D
Verified Purchase
Donald I Clarke
Lexington, US
★★★★★ 3
Loose fitting neck, not snug.
Size: XX-Large, Color: Dark Blue
I am 6’4” weigh @ 230 lbs and ordered a 2XL. My dress shirt neck size is 17 inches. If you’re happy with a very loose fitting around your neck, then you’ll be ok with this mock turtleneck shirt. I ordered thinking it would be a snug fit around the neck size, not hanging down @ one inch or more in the front.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 30, 2025

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