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 in need of high-performance cooling solutions. These High Efficiency Series oil coolers come with 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