CSF 99-03 BMW M5 (E39) / 95-03 BMW 540i M/T Radiator (Fits Auto Trans w/Modified Drain Plug)

Overview

With over 50 years of expertise in radiator manufacturing, CSF delivers a high-performance all-aluminum radiator tailored for the BMW E39 M5 and 540i (1999-2003). This radiator is engineered to keep your engine cool, whether you're cruising down the street or pushing limits on the track. It's an essential upgrade for both high-horsepower builds and race vehicles that demand superior cooling efficiency in competitive environments.

Key Features

• 2-Row 42mm Core featuring CSF's innovative B-Tube Technology for enhanced cooling.
• Ultra-efficient multi-louvered fins with a 6.5mm height for maximum airflow and heat dissipation.
• CNC machined "Quick-Connect" inlet/outlet connections for seamless installation.
• Durable CNC machined brackets and fittings designed for a precise fit.
• All-aluminum construction with a smooth satin finish for a clean look.
• Drop-in fit; no modifications required for installation.

Fitment

• BMW 540i (1999-2003)
• BMW M5 (1999-2003)

Technical Specs

• Material: Aluminum
• Core Height: 25.5625 inches
• Core Width: 17 inches
• Core Thickness: 1.625 inches
• Core Row Quantity: 2
• Inlet Diameter: 1.5 inches (Top Right)
• Outlet Diameter: 1.5 inches (Bottom Left)
• Installation Type: Drop-In Fit
• Finish/Color: Satin

Customer Feedback

"Installed this radiator on my 2001 M5 the cooling efficiency is noticeable, especially during track days. No overheating issues, and the fit was perfect!"

Closing Summary

Whether you're daily driving or testing your limits on the racetrack, the CSF High-Performance All-Aluminum Radiator offers reliable cooling and exceptional build quality. It's a solid choice for any enthusiast looking to optimize their BMW E39 M5 or 540i.