Aluminum Radiators

API Heat Transfer offers the broadest range of brazed aluminum radiator styles and technologies available in the industry. From small individual cooling cores to large complex engine cooling systems, from heavy-duty bar & plate construction to cost-effective plastic tank radiators, we engineer the right design for your mobile or industrial application.

Why aluminum brazing technology:

Brazed aluminum radiators create a unified, pressure-sealed core through precision furnace processes that bond fins, tubes, and headers into a monolithic structure. This eliminates vulnerable joint connections and produces exceptionally strong, leak-resistant cores with superior thermal efficiency. Aluminum’s high thermal conductivity and light weight make it ideal for performance-critical applications where efficiency, weight, and durability matter.

Our commitment to continuous innovation:

Our engineering team is relentlessly developing additional fin geometries and core configurations to improve heat transfer efficiency and meet or exceed your expectations. We don’t settle for standard solutions—every design is optimized for your specific application’s thermal demands, space constraints, and environmental conditions.

Comprehensive aluminum radiator portfolio:

BAR & PLATE RADIATORS – Maximum Flexibility

Fins are precisely laid between aluminum braze sheets and fitted with header and face bars. The assembled unit is placed into one of our modern brazing furnaces where precise time and temperature control produces a unified, pressure-sealed core.

• Ideal for heavy-duty mobile and industrial applications
• Wide variety of thermally efficient internal and external fin patterns
• Rugged, compact, lightweight construction
• Infinite core configurations and sizes for custom design to your exact requirements
• Combi-cooler designs cool multiple fluids in a single brazed unit
• Available as standalone cooler or complete system with charge air cooler and oil cooler components
• Manifolds welded to meet your specific piping requirements

T-BAR RADIATORS – Enhanced Durability

Our patented T-Bar design replaces traditional hot fins and separate bars with a single precision-extruded tube, dramatically improving durability and reliability in extreme duty applications.

• Highly flexible design options
• Enhanced extruded tubes engineered for superior charge air cooling
• Patented tube-to-bar joint ensures consistent, reliable brazing
• Extruded tubes provide unrivaled durability with fewer leak paths
• High-efficiency louvered fins for aggressive heat rejection
• Wide variety of debris-resistant non-louvered fins
• Welded tank-to-core construction ensures long service life
• Zinc-infused aluminum materials provide unrivaled corrosion protection
• Low charge-air-side pressure drop
• Engineered to withstand heavy thermal cycle loads and extreme operating conditions

TUBE & HEADER RADIATORS – Cost-Effective Proven Design

Our brazed aluminum tube and header radiators offer proven, cost-effective solutions for stationary and mobile engine cooling applications. These traditional designs excel as standalone components and integrate seamlessly into complete cooling packages.

• Wide range of row depths for varied cooling loads
• Variety of external fins matched to different environmental conditions
• Welded aluminum tanks—fabricated, stamped, or cast depending on application and volume
• Plastic tank options available for cost-sensitive applications
• Tank design meets your specific piping requirements
• Welded construction provides superior structural integrity
• Excellent compatibility with bar & plate oil coolers and charge air coolers for complete systems

**MICROCHANNEL RADIATORS – Compact Efficiency**

Microchannel radiators deliver cost-effective thermal solutions for low-flow, high-pressure engine cooling applications where compact size and efficiency are critical.

• Robust and flexible design
• Louvered and non-louvered air-side fin options
• Efficient surface geometry maximizes heat rejection in tight envelopes
• Ideal for space-constrained installations

Complete system integration:

Whether you choose a standalone radiator or a complete engine cooling package, our radiators are engineered to work seamlessly with charge air coolers, oil coolers, fans, shrouds, and controls. We provide radiators as individual components or as fully integrated, tested cooling systems ready for installation.

Why engineers choose our aluminum radiators:

• Proven manufacturing – Decades of expertise in precision brazing and aluminum welding
• Design flexibility – Infinite configuration options matched to your exact thermal and spatial requirements
• Technology range – Choose from bar & plate, TBAR, tube & header, or microchannel based on your duty cycle
• Integration capability – Single-source for complete cooling systems or individual components
• Continuous innovation – Our team develops new fin geometries and core designs to improve efficiency
• Global support – Experienced engineering teams worldwide
• Quality assurance – Rigorous testing ensures reliability in the field