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 the hallmark that ensures first-class performance from the best features and fitment. A certification exclusive to Thermaltake it sets the benchmark for all true LCS chassis and is applied only to products that meet our stringent design standards for delivering what hardcore enthusiasts demand. The Tt LCS certification is a way for Thermaltake to designate to all power users the chassis which have been tested for best compatibility with extreme liquid cooling configurations.

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 operation.

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 weight.

High-Quality Manufacturing Process: Reflow Soldering

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.

Remarkable Expansion

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.