aFe BladeRunner Supercharger Coolant Expansion Tank

2015–2023 Dodge Challenger / Charger 6.2L Hellcat

Part #: 46-51002

Overview

The aFe BladeRunner Supercharger Coolant Expansion Tank is a premium replacement for the factory coolant expansion tank found on 2015 to 2023 Dodge Challenger and Charger Hellcat models equipped with the 6.2L supercharged V8 engine. Designed to enhance both reliability and aesthetics, this tank addresses the common issues associated with the stock plastic tanks, such as yellowing, brittleness, and potential leaks over time. Enthusiasts seeking a durable, long-lasting upgrade that also elevates the engine bay appearance will find this tank an ideal solution.

Built to withstand the demanding conditions of a high-performance supercharged engine, the BladeRunner tank offers increased capacity and superior materials to ensure consistent coolant management and peace of mind during spirited driving or track use.

Key Features

Engineered for durability and style, the aFe BladeRunner Expansion Tank includes several advanced features that make it a standout upgrade:

• Constructed from 1/8" thick billet aluminum plates for exceptional strength and longevity
• 100% TIG welded for a robust, leak-free, and visually clean finish
• Includes billet aluminum fittings that eliminate weak points and ensure secure connections
• Features a stainless steel sight tube with high-temperature fittings for easy coolant level monitoring
• Increases coolant capacity by approximately 10% compared to the factory tank
• Fits using all factory mounting points and accepts the original expansion tank cap for a seamless installation
• Finished with a sleek brushed aluminum surface and laser-etched aFe POWER logo for a custom, high-quality look
• Resistant to yellowing and brittleness, maintaining appearance and function over time

Construction & Design

The BladeRunner Expansion Tank is meticulously crafted from thick billet aluminum plates, providing superior durability over the factory plastic tank. The use of aluminum not only enhances strength but also improves heat dissipation, which is critical in managing the thermal demands of a supercharged Hellcat engine. The tank’s 100% TIG welding ensures structural integrity and a smooth, professional finish that resists cracking and leaks.

Billet aluminum fittings replace the factory plastic connectors, eliminating common failure points and ensuring a secure, leak-proof coolant system. The integrated stainless steel sight tube is designed to withstand high temperatures and pressure, allowing for quick and accurate fluid level checks without removing the cap.

Installation & Fitment

Installation of the aFe BladeRunner Expansion Tank is straightforward and designed to be a direct replacement for the factory unit. It utilizes all original mounting points and factory hose connections, requiring no modifications or special tools. The tank fits perfectly in the stock location on 2015–2023 Dodge Challenger and Charger Hellcat models with the 6.2L supercharged engine, making it an easy upgrade for enthusiasts looking to improve reliability and engine bay aesthetics.

What's Included

• One aFe BladeRunner Aluminum Expansion Tank
• Billet aluminum fittings pre-installed
• Stainless steel sight tube with high-temp fittings
• Installation hardware as required

Ideal For

This expansion tank is ideal for Dodge Challenger and Charger Hellcat owners who want to replace their aging factory coolant tank with a more durable, visually appealing, and higher-capacity solution. It suits daily drivers, weekend warriors, and track enthusiasts who demand reliability and style from their engine components. Additionally, it is perfect for those looking to maintain or enhance the factory cooling system without compromising fitment or requiring extensive modifications.

Emissions Note

This product does not require a CARB Executive Order (EO#) and is compliant with emissions regulations for the specified vehicles.

aFe POWER (Advanced FLOW Engineering) offers dyno-proven intake, filtration, and exhaust upgrades aimed at measurable performance gains. The brand’s lineup is geared toward enthusiasts looking for better airflow, improved sound, and durable materials—from cold air intakes to stainless exhaust systems for street and track applications.