Mishimoto Replacement Automatic Transmission Cooler

Fits 1999–2005 BMW E46

Part #: MMOC-E46-99TC

Overview

The Mishimoto 99-05 BMW E46 Replacement Automatic Transmission Cooler is a high-quality upgrade designed to enhance the cooling efficiency of your vehicle’s transmission system. Built specifically for BMW E46 models from 1999 to 2005, this cooler helps maintain optimal transmission fluid temperatures, supporting reliable performance and prolonging the lifespan of your transmission. Whether you’re a daily driver or an enthusiast pushing your vehicle harder, this cooler provides a dependable solution to prevent overheating and fluid degradation, especially in demanding driving conditions or hot climates. This replacement cooler is engineered to match the factory specifications, ensuring a straightforward installation that restores your vehicle’s original cooling capacity. Made from durable materials, it offers long-lasting performance and resistance to corrosion, helping your BMW maintain smooth shifting and consistent operation over time.

Key Features

This Mishimoto transmission cooler features a robust design focused on efficient heat dissipation and durability. Its core components include high-quality aluminum fins and fittings that maximize surface area for heat transfer. The cooler’s compact form factor allows for easy installation without extensive modifications, making it an ideal choice for both repair and preventative maintenance. Designed to withstand the rigors of daily driving, it provides a reliable cooling solution that helps prevent transmission overheating and fluid breakdown.

• Constructed from lightweight, corrosion-resistant aluminum
• Designed to fit 1999-2005 BMW E46 models seamlessly
• Supports consistent transmission temperatures for improved reliability
• Easy bolt-on replacement for factory cooler
• Enhances cooling capacity to prevent overheating during demanding driving conditions
• Durable construction ensures long-term performance

Construction & Design

This transmission cooler is crafted from high-grade aluminum, featuring a finned core that promotes efficient heat transfer. Its compact, lightweight design ensures optimal fitment within the factory mounting points, with durable fittings that resist leaks and corrosion. The construction emphasizes longevity and consistent performance, making it a reliable upgrade for your BMW E46.

Installation & Fitment

The Mishimoto cooler is designed as a direct replacement for the factory unit, requiring minimal modifications for installation. It bolts directly into the existing mounting points, making it suitable for DIY enthusiasts and professional installers alike. Proper installation ensures maximum cooling efficiency and long-term reliability.

What’s Included

The package includes the Mishimoto transmission cooler, fittings, and necessary hardware for a complete replacement. Additional accessories or tools are not typically required for installation.

Ideal For

This cooler is ideal for BMW E46 owners seeking to improve transmission cooling, especially those who frequently drive in hot climates, tow heavy loads, or engage in spirited driving. It’s a practical upgrade for maintaining transmission health and ensuring consistent performance over time.