Installation Specs

Performance Aluminum Radiator, fits Porsche Cayenne 2003-2010

Name: Performance Aluminum Radiator, fits Porsche Cayenne 2003-2010
SKU: MMRAD-CAY-03
Price: 532.77 USD
Availability: InStock

$532.77

Regular Price $887.95

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Installation Difficulty: Hard

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Installation Specs

Key Benefits

Direct-Fit Performance Radiator for 2003-2010 Porsche Cayenne
Single row 40mm core maximizes coolant flow area for optimal performance
Strutted tubes ensure the strength of the radiator for robust durability
OEM-style louvered fin design to enhance airflow and cooling
Curved header plate enhances the core geometry to support increased strength, better-brazed connection, and larger contact area
Expansion joints explicitly designed for Porsche performance, aiding in a reduction of stress on the radiator and extending the overall lifespan
The radiator has a 3.4L fluid capacity, allowing for more fluid cooling over stock
The unique fan shroud locking mechanism is constructed from billet aluminum to mimic stock mounting for ease of installation, unlike the commonly used thin sheet metal or plastic that historically cracks.
Updated thicker and stronger mounting points for the radiator, AC condenser, and transmission cooler
CNC-machined inlet and outlet for smooth airflow and sized to connect to OE-style hose fittings
Slotted magnetic drain plug makes services mess-free
Includes foam sealing for more efficient cooling and fitment.
Modifications are not needed, allowing for an easier installation process

See all benefits

Key Benefits

Direct-Fit Performance Radiator for 2003-2010 Porsche Cayenne
Single row 40mm core maximizes coolant flow area for optimal performance
Strutted tubes ensure the strength of the radiator for robust durability
OEM-style louvered fin design to enhance airflow and cooling
Curved header plate enhances the core geometry to support increased strength, better-brazed connection, and larger contact area
Expansion joints explicitly designed for Porsche performance, aiding in a reduction of stress on the radiator and extending the overall lifespan
The radiator has a 3.4L fluid capacity, allowing for more fluid cooling over stock
The unique fan shroud locking mechanism is constructed from billet aluminum to mimic stock mounting for ease of installation, unlike the commonly used thin sheet metal or plastic that historically cracks.
Updated thicker and stronger mounting points for the radiator, AC condenser, and transmission cooler
CNC-machined inlet and outlet for smooth airflow and sized to connect to OE-style hose fittings
Slotted magnetic drain plug makes services mess-free
Includes foam sealing for more efficient cooling and fitment.
Modifications are not needed, allowing for an easier installation process

Engineered specifically for the 2003-2010 Porsche Cayenne, Mishimoto's Direct-Fit Performance Radiator is ideal for optimal vehicle cooling. Its single-row 40mm core and 3.4L fluid capacity maximize coolant flow, while strutted tubes and OEM-style louvered fins enhance durability and airflow. A curved header plate and Porsche-specific expansion joints increase strength and longevity. Featuring a unique billet aluminum fan shroud lock, thicker mounting points, a CNC-machined inlet and outlet, and a slotted magnetic drain plug. No modifications are required for a hassle-free installation. This radiator delivers exceptional performance and durability without compromising on ease of use.

More Information
Overall Length (in)	36.38
Overall Width (in)	4.74
Core Length (in)	27.95
Core Height (in)	21.77
Core Thickness (in)	1.5748
Fluid Capacity (gal)	0.9
Rows	1
Inlet (in)	1.52
Outlet (in)	1.52
Drain Plug Thread Size	M12x1.5
DPI	2756
Material	Aluminum
Engine Codes	M4801, M5501, M02.2Y, M48.00, M4851, M4851S
Chassis Codes	PL71
Coolant Capacity	0.9

Installation Guide

(Size: 19.1 MB)

(1) Performance Aluminum Radiator
(2) O-Rings
Required Install Hardware
Mishimoto Lifetime Warranty

Cooling Cayenne – Performance Radiator for the 2003-2010 Porsche Cayenne

March 28, 2025

The Porsche Cayenne has always been a unique entry in the performance SUV world. Whether tearing up the pavement, tackling dirt trails, or hauling the kids to soccer, its blend of power and versatility makes it a favorite among enthusiasts. But as any Cayenne owner knows, keeping the engine cool is critical—especially for those who push their vehicles beyond the daily commute. That’s why we developed the Mishimoto Performance Aluminum Radiator for the 2003-2010 Porsche Cayenne, designed to deliver enhanced cooling performance with durability that stands up to the rigors of both the street and the trail.

From the factory, the Porsche Cayenne is equipped with a cooling system that’s well-suited for the average driver. However, for those who demand more—whether it’s spirited driving, towing, or off-road adventures—the stock radiator can quickly become a bottleneck. Heat soak, reduced cooling efficiency, and long-term wear can all lead to performance issues and potential overheating, particularly

Cooling Cayenne – Performance Radiator for the 2003-2010 Porsche Cayenne

Looking Ahead & Behind – Mishimoto Year in Review

January 08, 2025

Now that we've closed out 2024 and started a new year, we’ve looked back at what our automotive cooling and performance auto parts team has created and the growth of our company. We are also looking into our crystal ball of what is ahead in 2025 for our new innovative product roster.

What We've Accomplished

Moved to Pennsylvania!

Mishimoto was founded in 2005 in Delaware and has served as an excellent home for the last two decades. However, we’re always looking to push the limits here at Mishimoto, so in April of 2024 we decided to move next door to Garnet Valley, Pennsylvania, allowing us to expand our footprint to a 68,000-square-foot building to provide larger space to develop new and exciting performance parts. This move also allows for expanded contributors, bringing in more engineers, project managers, and marketers! Are you local to the area and interested in joining the team? Check out our careers page.

Launched Borne Off-Road

An image of Anthony, a Mishimoto engineering, sitting on the hood of a yellow Jeep JK Wrangler that is in the middle of a mud bog.

In October 2024, Mishimoto launched its sister brand,

Looking Ahead & Behind – Mishimoto Year in Review

Mishimoto Automotive (“Mishimoto”) warrants its products under this lifetime limited warranty policy (“Warranty Policy”). This Warranty Policy applies solely to: (i) Mishimoto Products purchased directly from Mishimoto or Mishimoto authorized dealers (each a “Mishimoto Product” and collectively, the “Mishimoto Products”) and (ii) the original purchaser of such Mishimoto Product (“Purchaser”). This Warranty Policy is non-transferable and all claims under this Warranty Policy must be accompanied by the original sales receipt. The terms and conditions of this Warranty Policy are subject to change by Mishimoto at any time without notice.

For our complete warranty policy, please click here.