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ZEX Wet Injected Nitrous System (86-04 V8)

21 Reviews
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  • Item #30109
  • MPN #ZEX-82023
  • Market Price $662.99
  • You Save 13% ($87.00)
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  • Gain up to 125 HP.
  • Advanced, precise electronic controls.
  • Throttle position sensor activated.
  • Works with stock fuel rails.
  • Includes 75, 100, and 125 jets.
  • Fits 86-04 V8 Mustangs.

Gain Up to 125HP. ZEX Wet Injected Nitrous Systems include 75, 100, and 125 shot jets that will get your Pony flying down the track faster than you ever thought possible for less money than you'd believe. It doesn't get cheaper to add that much power to your Mustang.

Advanced Electronic Control. ZEX's Wet Injected Nitrous system uses patented "Active Fuel Control" that automatically adjusts nitrous fuel enrichment with bottle pressure. The result is that your engine never runs too rich or too lean, preventing engine damage. Unlike other less expensive systems, the ZEX "Wet" nitrous systems activate at wide-open throttle using advanced electronics that monitor your engine's throttle position sensor voltage to ensure activation at precisely the right time. This makes using your nitrous system very easy and reliable.

Better Nitrous Delivery. Unlike "dry" nitrous systems which inject nitrous directly, ZEX Wet Nitrous Systems connect to your fuel system and controls the amounts of fuel and nitrous using their management unit. The result is better control, complete fuel atomization, and more power.

Application. This Zex Wet Injected Nitrous is designed for use on the 1986-2004 5.0 and 4.6 V8 Mustangs with the stock fuel rails. System requires a minimum fuel pressure of 40 PSI.

Technical Notes. Professional Installation recommended. Requires fuel pressure of 40 PSI.

Mustang Fitment: 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 Details

What's in the Box
Hardware included:
  • (1) Nitrous Management Unit
  • (1) 10 lb. Nitrous Supply Bottle (unfilled)
  • (1) Bottle Clamp (Short)
  • (1) Bottle Clamp (Long)
  • (2) Wet Nitrous Nozzle
  • (1) 24" -3AN Braid Hose Assembly
  • (1) 36" -4AN Hose Assembly
  • (1) 16' -4AN Braid Hose Assembly
  • (1) .026 N20 Fuel Jet
  • (1) .030 N20 Fuel Jet
  • (1) .034 N20 Fuel Jet
  • (1) .040 N20 Fuel Jet
  • (1) .046 N20 Fuel Jet
  • (1) .054 N20 Fuel Jet
  • (1) Arming Switch Wire Harness
  • (1) 10 ft. Red 18 Ga. Wire
  • (1) Switch Cover
  • (4) 5/16-18x1" Bolt
  • (4) 5/16-18 Nut
  • (4) 5/16 Flat Washer
  • (6) 8x1/2" Drill Tip/Phil Head
  • (1) 1/8-28 NPT RH Tap
  • (1) 90 Degree -4AN Swivel Adapter
  • (1) 1/8 NPT Bulkhead Fitting
  • (1) Bulkhead Fitting Nut
  • (1) Fuel Tee Fitting
  • (1) -4AN to 1/8 NPT 90 Degree Fitting
  • (1) -4AN to 1/16 NPT Fitting
  • (1) Schrader Valve Core Tool
  • (2) Hose Clamp
Installation Info
Tech Specs
Nitrous Kit Specifications
Year/Model: 86-04 V8 Manufacturer: Zex
Wet or Dry: Wet Included Jet Sizes: 75-125
Delivery System: Nozzle Bottle Size Included: 10lbs
  • Bullitt - 01
  • Foxbody - 86, 87, 88, 89, 90, 91, 92, 93
  • Mach 1 - 03, 04
  • Cobra - 94, 95, 96, 97, 98, 99, 01, 03, 04
  • GT - 94, 95, 96, 97, 98, 99, 00, 01, 02, 03, 04

Fits V8's Only

Most Helpful Reviews View All

Overall Rating 5/5 Write a Review
Easy and Powerful!

I installed this to accompany my KB and get a little more power(75 shot)..It was VERY VERY easy to install..And the 75 shot I choose gave me a 69hp increase and 63tq increase!I would recommend this kit

Read More
Helpful (24) (0)

Best Nitrous Kit, and easy to install!

I have this kit on my 96 Cobra. This is by far the best mod I have done. It states its good from 75 to 125, but its actually good up to 175 shot. With this kit I am hitting high 11\'s with a 100 s

Read More
Helpful (24) (1)

Customer Photos (32) View All

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Q & A (15 Questions, 7 Answers) Ask a Question

New to Nitrous Just want to add some HP but have never ran nitrous. Is everything in this kit that I would need. Just assemble and go?

Whitehott99 Year: 1999 Model: Cobra

Question Resolved
Good Question (0) (0)
  • you will need to have the bottle filled up, they come empty when you order them. to be on the safe side, buy a window switch (AM has one for cheap), this will allow you to set a certain RPM range for the nitrous to be allowed into the engine (no detonation). bottle heater is very helpful. you can also buy a purge kit, which will deplete all the 'air bubbles' trapped in the lines, giving you a more controlled nitrous boost. hope this helps.

    Helpful (11) (0)

    Best Answer

    BamaStang12 Year: 2000 Model: GT

    Top 500 Contributor

Show 1 more answer

safe for high mileage car Would it be safe to use this kit on a 03 mach 1 with 130,000 miles on it. I'd like to go faster but need my car for daily driving cant afford to rebuild a motor.

John87 Year: 2003 Model: Mach 1

Question Resolved
Good Question (1) (1)
  • A properly maintained engine can handle the occasional weekend beating. Just as long as you don't use your "go-juice" every time your late to work....

    Helpful (9) (0)

    Best Answer

    Doom Year: 2002 Model: GT

Show 2 more answers

carb will this unit work with a carb on a 302

foxbody91 Year: 1991 Model: GT

Question Resolved
Good Question (0) (0)
  • No. You need a plate-style system.

    Helpful (0) (0)

    Tracy67 Year: 2004 Model: GT

    Top 50 Contributor

Show 1 more answer

Reviews (21) Write a Review

  • 5 Stars 1.0 100%
  • 4 Stars 0 0%
  • 3 Stars 0 0%
  • 2 Stars 0 0%
  • 1 Stars 0 0%

out of 5 stars

21 Customers Recommend this Product

Installation Time:Full Day

  • Performance Gain: 4.6 4.6/5
  • Fit: 4.6 4.6/5
  • Bang For Your Buck: 4.8 4.8/5
Filter By Sort By
  • 5/5

    Easy and Powerful!

    July 17, 2010

    I installed this to accompany my KB and get a little more power(75 shot)..It was VERY VERY easy to install..And the 75 shot I choose gave me a 69hp increase and 63tq increase!I would recommend this kit to anyone!

    KB'd GT

    Helpful (24) (0)

  • 5/5

    Easy, clean, fantastic installation

    January 27, 2012

    This kit is extremely well done. A major highlight is the flexibility of installation. Everything you need to install the kit is included and then some. It has various fittings, adapters, and hardware to meet any type of fuel supply needs, it also includes all electrical connectors and enough wire to allow different arming switch mounting options. The different nozzles are easy to install making it simple to adjust the size of the shot. The kit includes a tap for threading the nozzle into a metal intake, OR a grommet for installing into plastic intake pipes. This kit is much more complete and much simpler to install than many comparable set ups. The control unit itself is compact, easy to hide or mount, and much cleaner in appearance and installation than other kits. Other kits using mechanical wide open throttle switches are no comparison for the accuracy and ease of the unit that relies on the throttle position sensor signal. The kit did not skimp on braided line, so there is plenty of flexibility with bottle mounting and line routing. My only complaint would be that american muscle did not stress the importance of tuning the vehicle as much as they should. No where in the product description does it mention the need for timing adjustments and proper fuel selection. These are requirements that would taken into consideration by a professional but maybe not by the general public, so please note, even on a modern electronically controlled engine, it is safer to run this kit with a professional tune that delays ignition timing to prevent detonation, it is also necessary to use premium 91 octane or better fuel when running nitrous. Once those requirments are met, this kit offers an easy, clean installation, and exceptional performance. **please note, i could not use the proper language for "timing delay" because it flags the "r" word as inappropriate language.....


    Year: 2001 Model: Cobra Driving Style: Street / Strip 'Stangs I have owned: 2

    Helpful (22) (0)

  • 5/5

    Did it my self

    September 25, 2009

    Great but I have a 04 GT I installed the kit my self and am runinng a 125 shot my boy got a 02 gt keene bell twinscew and every time we run i beat him by half a car he spent 5700.00 for his kit. This is worth every penny.

    Ronnie J

    Year: 2004 Model: GT

    Helpful (40) (6)

  • 5/5

    Best Nitrous Kit, and easy to install!

    March 22, 2009

    I have this kit on my 96 Cobra. This is by far the best mod I have done. It states its good from 75 to 125, but its actually good up to 175 shot. With this kit I am hitting high 11\'s with a 100 shot.


    Year: 1996 Model: Cobra

    Helpful (24) (1)

  • 5/5

    Awesome Kit

    December 09, 2009

    Best Bang for the Buck!!! Great kit comes with everything needed!!! Locked and loaded ready to fly!!!

    Tom L

    Helpful (13) (1)

  • 5/5

    zex wet kit

    January 16, 2011

    I have done a lot of research and found that a 2v 4.6l will only hold upto 100 shot. I is amazing when it comes into play. I wired My kit through tration control because zex said if tration control came on while spraying your motor is done. I wish that would add something to watch that also. otherwise its a great kit.


    Driving Style: Daily Driver

    Helpful (12) (5)

  • 5/5

    Great Kit

    November 29, 2008

    Very nice system. I installed it on my 99 GT and the power is amazing. The installation is fairly easy as well.


    Year: 1999 Model: GT

    Helpful (6) (1)

  • 5/5

    Best nitrous available for beginner

    July 25, 2008

    This system is the best for someone who's starting in nitrous. Very easy to install, look great and offer best hp for buck !


    Helpful (8) (3)

  • 5/5

    best NOS kit

    August 08, 2011

    The Zex kit is awesome. Easy install and works great (WOT). I'd recommend to anyone. Really woke up the Mach 1 with the 125 shot!


    Year: 2003 Model: Mach 1 Driving Style: Show

    Helpful (3) (0)

  • 5/5

    Best Way For Power

    January 06, 2010

    Have zero complaints with this kit and was easy to install. I made 310 hp and 410 tq at the wheels with a custom tune on only the 75 shot. Also ran a 13.8 sec 1/4 at altitude in Denver this past summer. Next is the 100 shot/ tune and cheater slicks to plant the power to the ground. Great product!

    Bryan E

    Helpful (9) (5)

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