2 0 Thomas Built EF Charge Air Cooler (ATAAC) $650 USD Quality used charge air cooler from a Thomas Built Bus EF (front engine bus), backed by our standard warranty. OEM # TBB 86190025, MOD 3E7977, MOD 1E0038990000, 33-RA-861925, 041-004-021... ConditionUsedStock Number07C-3E7977-STK MLS Number12029127CategoryCharge Air Coolers (ATAAC) Last Updated8/19/2025 LocationBig Lake, MN, US Sold ByQuality Bus and Truck Parts (844) 580-___ SHOWNUMBERCall Seller Email Seller Save More Info