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USP Marine

4.5 (123)

USP Marine Tuning Essential Performance Kit for Mercury Verado 350-400 Engines

Name: USP Marine USP Marine Tuning Essential Performance Kit for Mercury Verado 350-400 Engines - USP Marine Tuning Essential Performance Kit for Mercury Verado 350-400 Engines
Brand: USP Marine
SKU: 40209438048438
Price: 512.97 USD
Availability: InStock
Rating: 5 (5 reviews)

4.5 (1,234)

Sold 100+ last 30 days

20% off first order

$512.97$569.97

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Color

Black

Quantity

Questions what the kit does? Watch this explainer video first.

The ultimate performance package for your Mercury Verado 350-400 Verado engines. If you are serious about consistent performance, this is the kit for you. Tackle common boost ...

Reviews

5.0

5 ratings

Quality

These guys sell quality products. All the hoses and clamps in this kit are quality. A quick google search and there is a detailed video for installation. Perfect kit for my tuned 350 verado.

Erik · May 13, 2026

Awesome product install was super easy, there are great videos on the website. Cabt wait to hear it run.!

alex · January 22, 2026

Considering this is my seventh kit for the four hundred or four hundred r, they work every time perfect fit a little more supercharger noise . If you have a four hundred or four hundred r, that's a couple years old, change it out.

Rob · September 19, 2024

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USP Marine

4.8 (150)

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Reviews

5.0

5 ratings

Quality

These guys sell quality products. All the hoses and clamps in this kit are quality. A quick google search and there is a detailed video for installation. Perfect kit for my tuned 350 verado.

Erik · May 13, 2026