Nitrous Express GM LS 102mm Nitrous Plate Kit (50-400HP) w/5lb Bottle

Nitrous Express GM LS 102mm Nitrous Plate Kit (50-400HP) w/5lb Bottle

Marsoni

M251S

$467.45

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

Nitrous Express GM LS 102mm Nitrous Plate Kit (50-400HP) w/5lb BottleThe Nitrous Express LS 102mm Plate System features a billet plate that fits all FAST 102 intakes. This 102mm plate bolts between the throttle body and intake making installation quick, easy and attractive. The system comes as a single stage system and includes jetting for 50, 100, 150, 200, 250, 300, 350 and 400 horsepower. The plate is pre machined with a second set of nitrous and fuel passages so you can easily upgrade to a dual stage system by

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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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Everything looks good quality to me. I find it odd that the people leaving bad reviews with pictures of broken and melted impeller, when you can clearly see the brass on the inside is brown and dirty like old pennies and mine is shiny new. It's almost like the took the pictures of the ones they replaced to get a refund and a free repair kit.

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Reviewed in the United States on April 26, 2026

Verified Purchase

Amazon Customer

Waukegan, US

★★★★★ 5

Well made materials.

Arrived on time and well packaged. Good quality materials and exact fit. Perfect fit, Easy to install. Make sure to review installation instruction. Don't put the gaskets in the wrong place. Will buy again from this vender.

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Reviewed in the United States on September 17, 2025

Verified Purchase

Outdoorfun

Port Orchard, US

★★★★★ 5

Good for the $$$

Worked great on my Mercruiser Alpha One Gen 2. Once the bottom unit of the outdrive is off and cleaned it only takes a few minutes to install impeller, seals and housing. A very affordable alternative to taking it to the shop.

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Reviewed in the United States on September 22, 2025

Verified Purchase

FrankieJ

Boise, US

★★★★★ 5

Fit perfectly and very complete set of parts

Had everything I needed plus some extra parts in the kit. I probably could have just replaced the impeller for slightly less but while everything was disassembled you might as well replace the works. Included - Water Pump Impeller, Housing, Key, Face Plate, Face Plate Gasket, O-Ring, Seal Face and Carrier Assembly Oil Seal

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Reviewed in the United States on October 28, 2025

Verified Purchase

chris null

Pawtucket, US

★★★★★ 5

Water impeller kit

Worked perfectly for my ‘02 Rinker Captiva 212 with the 5.7 Mercruiser Aloha one outdrive !

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Reviewed in the United States on October 9, 2025