Nitrous Express Billet Supercharger Lid - LT4 Applications w/Integrated Nitrous Ports (Lid Only)

Nitrous Express Billet Supercharger Lid - LT4 Applications w/Integrated Nitrous Ports (Lid Only)

Marsoni

M251S

$927.13

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

Nitrous Express Billet Supercharger Lid - LT4 Applications w/Integrated Nitrous Ports (Lid Only)SKU: NX939WN UPC: 653374979160 Nitrous Express Billet Supercharger Lid LT4 Applications w Integrated Nitrous Ports The Nitrous Express Billet Supercharger Lid is engineered specifically for LT4 platforms to deliver clean installation of nitrous and consistent performance. Precision machined from billet aluminum and designed as a direct replacement for the factory LT4 supercharger lid, it integrates dedicated N2O ports for a tidy, serviceable setup

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Great fit, and lot more more robust in build than the OEM filter it replaces. I've replaced the factory cabin air filters in at least 3 vehicles with these, when the time came to replace. Side note: This one went into a 2020 Lincoln Aviator and --consistent with my experience with previous Lincoln models -- the retaining tabs on the filter housing door snapped off when I was trying to remove it. Nothing to do with the K&N filter, but I just don't understand why Lincoln can't design a better housing door mechanism.

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Reviewed in the United States on September 16, 2025

Verified Purchase

Zoloft

Alexandria, US

★★★★★ 5

Great fit, great replacement for standard filter.

Size: 1 Count (Pack of 1)

Very tight fit, but fit it does. I put this in my 2.5L Ford Escape Hybrid 2020. Fits tight, but well, so no wiggling.

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Reviewed in the United States on September 8, 2025