My Account
My Garage
Shopping Cart
MY GARAGE Select Vehicle
MY GARAGE

Nitrous Express NP674 Assassin Plate Only - 4150

Manufacturer

Part Number

NP674
Sale Price

$311.73

In Stock (10+)

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Nitrous Express NP674 is a precision-engineered nitrous plate designed specifically for 4150-style carburetors. This Assassin series plate provides direct-port nitrous injection between your carburetor and intake manifold, delivering precise nitrous and fuel distribution for maximum power gains.

Key Features:

  • Designed for 4150 Holley-style carburetors and compatible manifolds
  • CNC-machined aluminum construction for durability and precision
  • Optimized spray pattern for even distribution across all cylinders
  • Direct bolt-on installation between carburetor and intake manifold
  • Part of Nitrous Express's proven Assassin nitrous system line
  • Plate only - requires separate nitrous solenoids and lines for complete system

This plate is the foundation component for building a complete Nitrous Express Assassin nitrous system. It features precisely positioned nozzle ports that ensure optimal nitrous and fuel atomization for consistent, reliable power delivery. The 4150 flange pattern fits all standard Holley 4150 carburetors and compatible square-bore intake manifolds.

Products specifications

Prop 65

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

So far seems to be going smoothly, only concern is the item picture doesn't match part number, So I'm hoping I get the part number of what I ordered, not what's pictured.

Easy But I haven't received my part yet so I can't say

INtuitive. Easy.

The website made it simple to find the part I needed!

Thanks!!

I request no offers via e-mail or phone and would like my info to not be shared

Easy

On time

Share icon
Return Policy
Returns are easy at THMotorsports

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy