The Restrictor Adapter is engineered for precision in nitrous and fuel pressure applications. With a configuration of 1/8" NPT Male to -4AN Male, this adapter is designed to stabilize pressure fluctuations, ensuring accurate readings and reliable performance. Whether you're fine-tuning your setup at the track or managing fuel delivery on the street, this fitting is a crucial upgrade for any serious automotive enthusiast.
Universal Fitment: While this restrictor adapter is designed for universal compatibility, we recommend verifying fitment with your specific application to ensure optimal performance.
"Installed this on my 2022 Mustang GT and noticed a significant improvement in pressure stability. The readings are much clearer now during high-performance runs!"
"Used this on my 2021 F-150 for my nitrous setup. It fit perfectly and helped eliminate fluctuations, making tuning a breeze."
The Restrictor Adapter is an essential component for anyone looking to enhance their nitrous or fuel pressure systems. With its robust steel construction and precise threading, it ensures reliable performance and improved readability, making it a must-have for serious setups.
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

AutoMeter is an aftermarket company that started in 1957. The company specializes in creating high precision gauges for various automobiles. The company was founded by Vern Westberg and initially poured sand castings in their family’s backyard. Today, Autometer is considered the leading brand when it comes to vehicle instrumentations and is being used by a lot of enthusiasts worldwide.
Experts in their FieldWith more than 60 years in the industry, the company was able to perfect its craft and developed many industry-changing products such as rev control and quick responding tachometers. They also offer an LCD Competiton data acquisition system for those who are more serious when it comes to data monitoring.
State-of-the-art FacilityAutometer has one of the industry’s most advanced manufacturing facilities based in Sycamore, IL USA. This, coupled with an advanced engineering system allows them to create parts that are durable, accurate, and precise. The company is ISO certified so you can be sure that you get quality products consistently.
Autometer has its own High-Performance division that focuses on competition spec and racing electronics and instrumentations. Using their experience, they are able to develop and continuously improve their products and adapt them to the ever-changing automotive technology.
Purchase Autometer at Vivid RacingIf you want to accurately monitor your engine’s vitals, then upgrade your gauges to Autometer. They have been the trusted brand of many enthusiasts and racers worldwide and have proven themselves as the leading brand in the industry. To know more, visit Vivid Racing and check out their list of products that would fit your specific requirement.