Supercharger MAP Port Cap by ICT Billet Aluminum Plug for LSA LS9 LT4

Description

Product Overview

The ICT Billet MAP port cap plug is engineered specifically for high‑performance LSA, LS9 and LT4 superchargers. Constructed from aerospace‑grade billet aluminum, the component combines lightweight strength with exceptional corrosion resistance, ensuring a long service life even under the most demanding engine conditions. The natural metallic finish not only provides a professional aesthetic but also helps dissipate heat generated around the MAP sensor area, contributing to more stable sensor readings.

Key specifications include a compact 2‑inch width and 1‑inch height footprint, weighing just 0.32 ounces, which makes it easy to install without adding unnecessary mass to the engine. The plug features a precision‑machined interior that matches the MAP sensor bore dimensions, creating an airtight seal that eliminates boost leaks and maintains consistent manifold pressure. Its design incorporates a secure locking mechanism that prevents accidental dislodgement during high‑rpm operation, while the exterior’s sleek metallic finish complements the engine bay’s visual appeal.

Manufactured in Wichita, Kansas, the plug benefits from ICT Billet’s rigorous quality control processes, including CNC machining, dimensional inspection, and surface treatment. Each unit is tested for fit and function before shipping, guaranteeing that customers receive a product that meets exacting automotive standards. The part number 551383 aligns with OEM specifications, making it a direct replacement that fits seamlessly into existing supercharger assemblies without the need for additional modifications.

Usage

The MAP port cap plug is installed in the MAP sensor ports of LSA, LS9 and LT4 superchargers, typically located on the intake manifold where the sensor monitors boost pressure. Installation requires removing the existing sensor cover, cleaning the bore, and inserting the billet plug until it seats fully. The plug can be used to cover one or both MAP sensor locations, providing flexibility for various engine configurations and performance upgrades.

Ideal for street‑driven performance vehicles, race‑prepared cars, and custom builds, the plug ensures that the MAP sensor receives accurate pressure data, which is critical for engine control unit (ECU) tuning and fuel management. By preventing air leaks, the plug helps maintain optimal boost levels, improving horsepower and torque delivery while protecting the engine from detonation caused by incorrect pressure readings.

The plug’s lightweight aluminum construction makes it suitable for applications where weight reduction is a priority, such as track cars or lightweight builds. Its durability also means it can withstand the high‑temperature environment of forced‑induction systems, making it a reliable component for both short‑term track sessions and long‑term daily driving.

Why Choose Us

Choosing the ICT Billet MAP port cap plug means selecting a product backed by decades of engineering expertise in high‑performance automotive components. Our billet aluminum is sourced from USA‑produced aerospace‑grade material, ensuring consistency in composition and performance. Each plug undergoes a multi‑stage quality assurance process that includes CNC precision, dimensional verification, and functional testing, guaranteeing a perfect fit for your supercharger.

We differentiate ourselves through our commitment to customer support. Our technical team is available to assist with installation guidance, compatibility questions, and performance tuning advice. Should any issues arise, we offer a straightforward warranty and replacement policy, reflecting our confidence in the product’s durability.

Furthermore, the plug’s design reflects a balance of form and function. The natural metallic finish not only resists corrosion but also adds a visual upgrade to the engine bay, appealing to enthusiasts who value both performance and aesthetics. By sealing MAP sensor bores effectively, the plug contributes to more reliable engine operation, reducing the risk of sensor errors that can lead to costly repairs.

Our manufacturing facility in Wichita, Kansas, adheres to ISO‑9001 standards, ensuring that each component meets stringent quality criteria. This local production also enables rapid response to customer feedback and the ability to implement design improvements quickly.

Key Features

• Precision‑machined aerospace aluminum provides a lightweight yet robust seal for MAP sensor ports.
• Secure locking design prevents dislodgement during high‑rpm operation, maintaining consistent boost pressure.
• Natural metallic finish offers corrosion resistance and a sleek appearance that enhances engine bay aesthetics.
• Easy installation fits directly into existing MAP sensor locations without additional modifications.
• Comprehensive customer support and warranty ensure confidence in long‑term performance.

FAQ

Is this plug compatible with all LSA, LS9, and LT4 superchargers?

Yes, the plug is designed to fit the MAP sensor ports of LSA, LS9 and LT4 superchargers. It matches the OEM dimensions, allowing it to replace the factory cover on any of these models without the need for adapters.

Can I use the plug on both MAP sensor ports simultaneously?

Absolutely. The plug can be installed in one or both MAP sensor locations, depending on your engine setup and performance goals. Using both plugs helps ensure a completely sealed intake system.

What tools are required for installation?

Installation typically requires a basic set of hand tools: a torque wrench or socket set to gently tighten the plug, a clean cloth for removing debris, and optionally a thread locker if extra security is desired. No specialized equipment is needed.

How does the billet aluminum improve performance compared to plastic caps?

Billet aluminum offers superior strength, heat resistance, and durability compared to plastic alternatives. It maintains its shape under high temperature and pressure, providing a more reliable seal that helps preserve accurate MAP sensor readings and consistent boost levels.

What warranty does ICT Billet provide for this product?

ICT Billet offers a one‑year limited warranty covering manufacturing defects. If the plug fails due to material or workmanship issues within the warranty period, we will replace it at no additional cost.