The Pacific CL420 Radiator is a high-performance 420mm copper radiator with
high-density copper fin design and brass tank. Built for 140mm high-static pressure fans, the radiator is
manufactured from premium-quality materials that provide exceptional performance, unrivalled reliability. The
unique stainless steel side panels guarantee the durability as well as reduce the weight of the radiator.
Integrated G1/4" threads make it easy to install, while rigid connections ensure leak-resistant measures are
in place. With an ideal mounting, fitting and flow set-up, the Pacific CL420 Radiator meets your cooling needs
in every way.
Tt LCS Certified
Tt LCS Certified is a Thermaltake exclusive certification applied only to products that pass
the design and
hardcore enthusiasts standards that a true LCS chassis should hold to. The Tt LCS
certification was created so
that we at Thermaltake can indicate to all power users which chassis have been tested to be
best compatible with
extreme liquid cooling configurations, ensuring you get the best performance from the best
features and fitment.
*The photo is for reference.
Optimized Heat Dispatching
The radiator is optimized for efficiently pulling heat away from the
power-dissipating components thus achieving maximum heat dissipation at both low and high airflow operation.
After soldering, the fin and tube connect to form a joint, thereby creating uniform heat transfer.
Triple-Row Copper Tubes with Brass Tank
To assure the best thermal capacity and increase heat transfer, the Pacific
CL420 is engineered with an extremely thick 64mm radiator along with a triple-row 16-set flat tube design and
brass tank. This technique allows that water flows down on the one side, and then passes across the bottom
chamber before circulating back to the other side of the radiator.
High-Density Copper Fin Design
Fin density is optimally designed to accommodate high air volume (FPI: 14).
The performance improves significantly with increased fan speed, offering superior cooling efficiency during
Stainless Steel Side Panels
Unlike most of copper radiators on the market, the radiator utilizes
stainless steel made side panels that increase the durability and strength of the radiator while reducing the
An exceptional manufacturing process using high temperature soldering at
482℉/250℃ sets the radiator in a class of its own. This technique allows for impurities to be kept out of the
soldering process, ensuring that full strength on all the connected areas is achieved. The radiator is baked
through a controlled atmosphere soldering line. The materials melt into each other to accomplish optimal
thermal transfer from the tubes to the actual fins in order to attain better heat evacuation.
Designed for 120mm and 140mm high-static pressure fans, the Pacific CL
Series allow users to build up aesthetically-superior watercooled PCs as well as incorporate
externally-modular upgrades for the systems, delivering the ultimate in custom configurations.