★★★★★ 5
Fit Great. Works great.
Fit perfectly Mercruiser 4.3
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Reviewed in the United States on March 22, 2026
Nitrous Express Dual 4150/Alcohol Nitrous Kit (100-500HP) w/o Bottle
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Nitrous Express Dual 4150/Alcohol Nitrous Kit (100-500HP) w/o BottleThe conventional Pro Power is the perfect mid level nitrous system for the budget minded sportsman racer. These systems feature the most advanced technology using the conventional spraybarless design. The Phase 3 series plates are the 'Next Generation' in nitrous performance and reliability. This new innovation in nitrous plate technology provides superior distribution and outstanding atomization. With no spray bars to sag, split, block airflow, or
Quick Dispatch:
Your Nitrous Express Dual 4150/Alcohol Nitrous Kit (100-500HP) w/o Bottle 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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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]
- Please click here for more details>>> Return & Exchange Policy
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4.1 ★★★★★
Based on 283 reviews
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Product Reviews
★★★★★ 5
Boat once again starts
Easy install once I figured out how to reach the starter. Worked first try and my boat is starting again. I think being a contortionist would help with the install since it is under the engine and boats typically only have access from the top. It probably took me an hour to get the old one off and about 30 min to install the new.
The symptom of the broken one was a click sound when trying to start the motor, but nothing turning over. Same sound with new. Battery or a jumper.
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Reviewed in the United States on October 10, 2025
★★★★★ 5
Exactly what I needed
I didn't know my current starter was getting that bad over the years. But this is perfect, shipped on time, matched perfectly, boat started like it's never ran prior. I have owned this boat for 13 years. Very pleased
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Reviewed in the United States on May 26, 2026
★★★★★ 5
Great starter for the best price
Great price and same exact part as the ones twice the price.
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Reviewed in the United States on September 30, 2025
★★★★★ 5
Water impeller Johnson
Size: 85-300 HP
Worked perfect for my 1988 Johnson 88 spl
already been on the water, no issues.
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Reviewed in the United States on April 15, 2026
