p>This combo includes our 17-1574 bracket set and our 17-1570-17 high performance cooling fan. Manufactured by XKs Unlimited, our alloy brackets make easy work of mounting the 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. Our high performance fan pulls 2800 CFM of air -- night and day compared to an original. This kit will not show as being in stock but no worries; it is assembled from individual pieces when ordered.