★★★★★ 4
Good parts
They fit
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Reviewed in the United States on May 5, 2026
Nitrous Express 4150 Assassin Plate System Pro Power Alcohol 100-500HP (15lb Bottle)
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Nitrous Express 4150 Assassin Plate System Pro Power Alcohol 100-500HP (15lb Bottle)Nitrous Express. N2O Injector Plate Assassinate the competition with the Assassin plate system. The Assassin is the most technically advanced single stage plate ever designed. The CNC machined design integrates the nitrous and fuel discharge ports into the outer perimeter. The Assassin offers a unique perimeter spray pattern that assures perfect nitrous fuel distribution. Which in turn solves the problems commonly found on single plane manifolds
Quick Dispatch:
Your Nitrous Express 4150 Assassin Plate System Pro Power Alcohol 100-500HP (15lb 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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4.7 ★★★★★
Based on 1536 reviews
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Product Reviews
★★★★★ 5
Worth it
Exactly what I needed and worked well. Good quality
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Reviewed in the United States on December 24, 2025
★★★★★ 5
Fits like oem
Fits like oem. The product itself is very durable.
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Reviewed in the United States on April 2, 2025
★★★★★ 5
Works for my kids BMW
I bought this as a gift for my stepson he has a BMW with a ridiculously complicated oil changing process and this wrench helped him out a lot he was pretty happy with it.
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Reviewed in the United States on August 25, 2025
★★★★★ 5
Works great!
Worked liked a charm on my son's bmw 3 series.
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Reviewed in the United States on September 17, 2025
