Mishimoto Thermostatic Engine Oil Cooler Kit

2007–2011 Jeep Wrangler JK 3.8L V6

Part #: MMOC-WRA-07T

Overview

The Mishimoto Thermostatic Engine Oil Cooler Kit is a precision-engineered cooling solution designed specifically for Jeep Wrangler JK models from 2007 to 2011 equipped with the 3.8L V6 engine. This kit helps maintain optimal engine oil temperatures during demanding driving conditions, such as off-road adventures or operation in hot climates, preventing oil overheating and premature engine wear.

Featuring a thermostatic sandwich plate, the system regulates oil flow based on temperature, ensuring your engine oil remains within the ideal range for enhanced reliability and longevity. This direct-fit kit is an essential upgrade for Jeep enthusiasts seeking to protect their engine and improve cooling performance without complicated modifications.

Key Features

Combining advanced engineering with durable materials, the Mishimoto Thermostatic Oil Cooler Kit delivers superior cooling efficiency and ease of installation:

• Thermostatic billet aluminum oil filter sandwich plate for precise oil temperature regulation
• 19-row stacked-plate aluminum oil cooler that reduces oil temperatures by up to 40°F
• Premade braided stainless steel oil lines with high-quality -AN fittings for leak-free, corrosion-resistant connections
• JK-specific mounting brackets designed for a perfect direct fit on 2007–2011 Jeep Wrangler models
• Adds 0.75 quarts to overall oil capacity, improving cooling and oil volume
• Minimal pressure drop to maintain proper oil flow and engine protection
• Compatible with Mishimoto Jeep JK transmission cooler kit and all-aluminum radiator for comprehensive cooling upgrades
• Includes all necessary hardware for straightforward installation
• Backed by the Mishimoto Lifetime Warranty for long-term quality assurance

Construction & Design

The Mishimoto Thermostatic Oil Cooler Kit is built from premium materials engineered to withstand harsh off-road environments and high engine temperatures. The 19-row stacked-plate oil cooler is crafted from lightweight aluminum, maximizing heat dissipation while minimizing added weight to your vehicle.

The billet aluminum sandwich plate is CNC-machined for precision and durability, incorporating a thermostatic valve that opens and closes based on oil temperature to optimize flow and cooling efficiency. Braided stainless steel oil lines with -AN fittings provide excellent corrosion resistance and maintain leak-free operation even under extreme vibration and movement.

Application-specific mounting brackets ensure a secure, direct-fit installation that preserves factory mounting points and vehicle integrity without requiring modifications.

Installation & Fitment

This oil cooler kit is designed for a seamless direct-fit installation on Jeep Wrangler JK models from 2007 to 2011 equipped with the 3.8L V6 engine and either 42RLE or NSG370 transmissions. The kit includes premade oil lines, mounting brackets, and all necessary hardware, allowing for a quick and straightforward installation process.

Clear, vehicle-specific instructions make this upgrade accessible for experienced DIYers and professional installers alike, typically requiring no additional modifications to your Jeep.

What's Included

• Billet aluminum thermostatic oil filter sandwich plate
• 19-row stacked-plate aluminum oil cooler
• Premade braided stainless steel oil lines with -AN fittings
• Application-specific mounting brackets
• All necessary installation hardware
• Detailed installation instructions

Ideal For

This Mishimoto Thermostatic Engine Oil Cooler Kit is ideal for Jeep Wrangler JK owners who frequently engage in off-road driving, trail riding, or operate their vehicles in hot climates where engine oil temperatures can rise rapidly. It is also well-suited for those who have upgraded their engine or transmission and require enhanced cooling capacity to maintain reliability and protect vital engine components.

For the ultimate cooling performance, pair this kit with Mishimoto’s Jeep JK transmission cooler and all-aluminum radiator to create a comprehensive cooling system designed to withstand the rigors of demanding use.

Mishimoto is a performance cooling brand offering aluminum radiators, intercoolers, oil coolers, hoses, and supporting hardware built to manage heat on hard-driven street and track vehicles. For boosted setups and towing/off-road rigs alike, Mishimoto upgrades are designed to increase cooling capacity and reliability where factory systems can become a limitation.