Aero’s “HE” Series (High Efficiency) FAA-PMA oil coolers are designed to be direct replacements for existing oil coolers, providing a competitively priced option for those needing high-performance cooling solutions. These High-Efficiency Series oil coolers have full FAA-PMA documentation, an industry-leading 2-year/2,000-hour warranty, and heat rejection capabilities that match or exceed expectations. Approved for use on many popular aircraft makes.  For AA5B Tiger