Manufactured by XKs Unlimited, these alloy brackets make easy work of mounting our 17-1570-17 high performance cooling fan to either a 3.8 or 4.2 Series I radiator. We've never liked the idea of mounting electric fans directly to the fragile radiator core and these brackets neatly solve that problem. Set includes upper and lower brackets and fan attaching hardware. Note: this is not a generic mounting set -- it only works with a specific fan. For a fan and fan bracket kit, see part number 17-1569.