CSF's universal dual-pass cross-flow heat exchanger suits custom builds as an air-to-water intercooler heat exchanger, small radiator or auxiliary radiator. It's 100% all-aluminum TIG-welded with a 2-row 42mm ultra-high-performance core, B-Tube technology and 6.5mm multi-louvered fins. Dual 3/4-inch (19mm) slip-on connections make plumbing easy, and CNC-machined mounting brackets let it mount in any orientation.
Specifications
| Type | Universal air-to-water heat exchanger (dual-pass, cross-flow) |
| Material | All-aluminum, 100% TIG-welded |
| Core | 42mm 2-row, CSF B-Tube technology |
| Fins | 6.5mm multi-louvered |
| Inlet / Outlet | 3/4 inch (19mm) slip-on connections |
| Finish | Smooth satin |
| Included | CNC-machined mounting brackets |
| Warranty | 2-year limited warranty |
Shipping
- In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Backordered items ship as soon as stock lands — contact us for lead times.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30-day returns on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
- Installed or used parts can’t be returned — confirm fitment before you install.
- Special orders and custom items are final sale.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Refund Policy
