BMW E28 M5 / E24 M6/635CSi High-Performance All-Aluminum Radiator

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Given the age of the E28 M5 and E24 M6, it is definitely worthwhile to upgrade the cooling system. The factory systems from the 80's were fine at the time, but cooling technology has come a long way since then. So if you're looking for the best possible cooling system, then look no further than the new CSF BMW E28 M5 / E24 M6 High-Performance All-Aluminum Radiator.

CSF has over 5 decades of experience manufacturing radiators. So when it comes to keeping your engine cool and your E28 M5 or E24 M6 running at its best, a CSF High-Performance All-Aluminum Radiator is the obvious choice. Designed to perform on the street or at the track, a performance radiator is a must-have for both high horsepower builds as well as race vehicles which need added cooling performance in motorsports environments. This radiator features a 1-Row 31mm core with CSF's exclusive B-Tube Technology: Unlike a regular oval shape "O" type radiator tube, CSF uses a specially engineered tube in the shape of a "B". These "B-tubes" are carefully formed and then brazed over the seam to seal. CSF is able to use thinner and lighter aluminum material (with better cooling efficiency) because this design is actually stronger than normal "O" shape tubes that are welded. The design (inlet in the middle of the tube that is seam brazed) increases the heat transfer surface area of the tubes by approximately 15% over regular tubes - producing the efficiency of two smaller tubes vs. one large tube within the same space criteria. With "B-tubes" you are able to get "dual liquid laminar flow". CSF also uses ultra efficient multi louvered fins that are carefully and precisely aligned to maximize airflow through each radiator core. Fin specifications are carefully measured and calculated for each application, and tested for maximum heat rejection efficiency in our wind-tunnel lab.

The CSF E28 M5 & E24 M6 radiator is a true "Drop-in fit" design requiring no modifications to install. OE style brackets are all CNC machined and welded for the best durability possible. Inlet/Outlet connections are designed to match the OE connections so you can reuse OEM hoses or aftermarket. Trust the cooling experts at CSF for the best performing, highest-quality, and most reliable radiators.

Product Details

Design & Engineering

CSF teamed up with A/C Solutions to develop this new radiator. Their founder, Austin Caccavo, is a long time E28 enthusiast. He started the company after updating the A/C system on his own E28. The relationship began with CSF manufacturing A/C condensers for their upgrade and conversion kits which eventually led to Austin asking if CSF would make a High-Performance radiator for the E28 M5. Austin and his team worked closely with CSF's engineering team to develop this radiator for perfect fitment, optimal performance, and all the features E28/E24 owners could hope for.

CSF vs OEM

The original OE radiator from BMW is an aluminum core with plastic tank design. While this is very common for OE radiators, heat exchanger technology has progressed significantly over the decades since these cars were released. Older high-performance vehicles require the best possible cooling systems and can greatly benefit from improved cooling efficiency. Anyone who has restored/updated a classic car knows the value of having updated parts that are as efficient as possible.

The CSF radiator features a 1-Row 31mm aluminum core that improves heat dissipation. CSF's Exclusive B-Tube Technology increases the heat transfer by approximately 15% over regular oval welded tubes. With ~35% more cooling fins, the CSF Radiator will outperform the OEM unit by a significant margin. In addition, the super-efficient multi-louvered fins maximize airflow through the core for the best possible performance. The radiator mounts in the factory location and requires no modifications or cutting.

The TIG-Welded 100% All Aluminum construction increases the overall strength of the radiator. This improves durability and longevity so you can be confident it will hold up to hard driving conditions.

Feature	CSF	OEM
# Core Rows	1	1
# Cooling Tubes	47	45
# Cooling Fin Rows	48	46
Fin Height/Width	6.5mm	7.7mm
Core Material	Aluminum	Aluminum
Tank Material	Aluminum	Plastic
Construction	100% TIG Welded	Crimp on Gasket

It has a Drain Plug

Those familiar with the radiator on the E28 M5 and E24 M6 know that the factory radiator does not come with a drain plug. While this isn't the end of the world, it's definitely a nice thing to have if you're going to do a coolant flush, pull the engine out, etc.

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Installed Photos

A/C Solutions E28 M5

Features

• 1-Row, 31mm Ultra-High-Performance Core
• Cooling Tubes with CSF's Exclusive B-Tube Technology
• 6.5mm Tall Ultra Efficient Fins with a Multi-Louvered Design for Maximum Surface Area Contact
• CNC Machined Mounting Brackets and OEM Style Inlet/Outlet
• 100% All Aluminum TIG-Welded Construction
• Satin Black Finish for an OEM+ Look and Feel
• True Plug-and-Play "Drop-in Fit" Installation Requires Absolutely No Modifications
• Two M14x1.5 Temperature Sensor Ports on left side tank (Plugs Included)
• Individually Leak and Pressure Tested
• 2-Year Limited Warranty

Applications

Year Range	Make	Chassis Code	Model	Trim	Engine / Trans / Etc	Notes
1985-1989	BMW	E24	635CSi	-	3.5L L6	-
1985-1988	BMW	E28	M5	-	3.5L L6	-
1987-1989	BMW	E24	M6	-	3.5L L6	-
1984-1989	BMW	E24	M635CSi	-	3.5L L6	-

OEM Part Numbers

• BMW: 17112226082
• BMW: 17 11 2 226 082
• BMW: 17-11-2-226-082
• BMW: 17112225061
• BMW: 17 11 2 225 061
• BMW: 17-11-2-225-061
• BMW: 17112226018
• BMW: 17 11 2 226 018
• BMW: 17-11-2-226-018

Warranty

Cooling Systems and Flexibles, Inc. (CSF) warrants CSF’s High-Performance Cooling Systems, under normal use and service, to the original purchaser of the vehicle in which the product was originally installed. For more information and details please visit our Warranty Page

SKU# 7232 Warranty Term: 2 years