The Fiat X1/9 is a two-seater, targa top, small Italian sports car with a mid-engine configuration pumping out 74 horse-power. The X1/9 was hot during its prime in the ’70s and ’80s, a “go-to” choice for young sports car enthusiasts. Popularity quickly grew as the vehicle performed extraordinarily well in slalom and hill climb races.

Originally designed by car manufacturer Bertone, it was initially made as a Fiat model until 1982. Fiat then handed production of the car back to Bertone, who continued to produce the compact sports car until 1989. They have not been forgotten and are still quite the classic collectible car for automotive enthusiasts.

For those still enjoying their X1/9 for track use, weekend cruising, or even daily driving, maintaining the vehicle with adequate cooling is key to having these classic cars stay on the road.  More and more OEM copper/brass radiators are failing, leaving owners scrambling for a reliable replacement. Until now, most (if not all) after-market options available are not built to a high standard, and often prematurely fail after only a few years, some failing within a few months after install.

Because of the lack of a high-quality aftermarket radiator available, “The Cooling Experts” at CSF were called upon by Italian classic car aficionados Midwest-Bayless, to address this problem and collaborated to produce the ultimate high-performance all-aluminum replacement radiator for Fiat X1/9

CSF is proud to announce another exclusive release to its “Classic Series” of all-aluminum, replacement radiators, with upgraded performance, for niché late-model vehicles from the 1970s-2000s

Fiat X1/9 – CSF#8142All-Aluminum 2-Row High-Performance Replacement Radiator

Midwest-Bayless approached CSF at PRI 2018 because of problems with their previous radiator that was being produced for them by an overseas manufacturer, the plaguing issues of their previous design and quality control made it more of a headache than a solution for Fiat owners.

CSF overcame these complications by starting from scratch with 1st sourcing an OEM radiator + working with the engineers at Midwest-Bayless to identify all of the weak points of both the OEM radiator, as well as their previous supplied radiators.

The quality of the CSF Fiat X1/9 radiator is superb. 100% TIG welded by CSF’s “master” welders, a CNC cut outer “shell”, extended hose connections, steel mounting studs at the right length, secured with speed nuts for adjustability during install and new foam insert packaging that withstands a 10-foot “drop test”.  

These revisions combined with CSF’s exclusive B-Tube Technology Core that is 15% more efficient than standard “oval” tube cores and ultra-efficient multi louvered fins make for the ultimate high-performance radiator for the iconic classic Fiat X1/9­­­.

All-Aluminum High-Performance Radiator (CSF#8142) Features:

  • 2-row 42mm (Dual-Core) featuring CSF’s exclusive B-tube technology
  • Ultra-efficient multi-louvered fin w/ 6mm fin height (for proper airflow to other cooling components). Resulting in optimal surface area contact and heat dissipation
  • “Drop-in fit” requiring no modifications to install
  • CNC machined “skeleton” for superb mounting
  • Slip-on hose fittings (35mm)
  • 100% all-aluminum TIG-welded construction
  • Steel mounting studs
  • Hand polished to a satin finish
  • 2 Year limited warranty

Part Number 
CSF# 8142 – Satin Finish

OEM Part Number 

MSRP/MAP $389.79 USD


  • 1972-1982 Fiat X1/9 (All Models)
  • 1982-1989 Bertone X1/9 (All Models)
  • 1975-1978 Lancia Monte Carlo (All Models)
  • 1980-1981 Lancia Scorpion (All Models)

CSF’s high-performance all-aluminum radiator for the Fiat/Bertone X1/9 is now available. Buy it from our Exclusive Dealer below:

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