★★★★★ 5
Fits correctly
Color: Black, Size: Large
Good quality.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
FlexFuel Pressure External Regulator Bypass Plug for LS Truck Intake Manifold Rail
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
FlexFuel Pressure External Regulator Bypass Plug for LS Truck Intake Manifold RailLS FlexFuel Pressure Regulator Plug Installs in place of factory integrated flexfuel pressure regulator that is mounted to the fuel rail on truck intake manifolds *** ONLY compatible with Flex Fuel rails*** Required when using an external fuel pressure regulator Compatible with (1999 2003) LS Gen 3 truck SUV round FlexFuel rails Made in Wichita Kansas, from aerospace grade billet aluminum Includes plug and oring Re uses the factory retainer clip
Quick Dispatch:
Your FlexFuel Pressure External Regulator Bypass Plug for LS Truck Intake Manifold Rail orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
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You'll receive a tracking link by email once your FlexFuel Pressure External Regulator Bypass Plug for LS Truck Intake Manifold Rail ships.
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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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4.2 ★★★★★
Based on 1005 reviews
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Product Reviews
★★★★★ 5
Worth the purchase
Very nice quality and shirt color is nice!!! Long enough to tuck in or leave out
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Reviewed in the United States on March 11, 2026
★★★★★ 5
Great Buy
Color: Wine Red, Size: Small
Perfect fit, looks great. Very nice feeling on the skin.
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Reviewed in the United States on February 22, 2026
★★★★★ 5
Comfortable
Color: Light Purple, Size: Medium
Nice fit! True to size
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Reviewed in the United States on March 25, 2026
★★★★★ 5
Fits right
Color: Dark Grey, Size: Medium
Very cool
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Reviewed in the United States on May 8, 2026
