Flex-a-lite designed, developed and marketed
the flex fan 40 years ago.

Since then, we’ve expanded our “flex” fan line to include a lower profile fan for street rod applications, a 7-blade version for higher static pressure, and light weight and all-steel fans to meet the needs of the oval track racing market. Our fan construction and designs have been proven on and off the track for nearly four decades. Our reputation and success at Flex-a-lite demands that we make the best products possible

How to choose a Belt-driven Fan

MODEL# DIA. PROJ. WIDTH   MODEL# DIA. PROJ. WIDTH 414 14” 2”   1615 15-1/4” 1-3/4” 415 15” 2”   1617 17-1/2” 1-3/4” 416 16” 2”   1618 18-1/4” 1-3/4” 417 17” 2”   1619 19-1/4” 1-3/4” 418 18-3/8” 2”   1715 15-1/4” 1-3/4” 1007 17” 1-1/4”   1717 17-1/2” 1-3/4” 1008 18” 1-1/4”   1718 18-1/4” 1-3/4” 1017 17” 1-1/4”   1719 19-1/4” 1-3/4” 1018 18” 1-1/4”   1817 17” 2-1/2” 1027 17” 1-1/4”   1818 18-1/4” 2-1/2” 1028 18” 1-1/4”   2615 15” 1-3/4” 1037 17” 1-1/4”   2617 17” 1-3/4” 1038 18” 1-1/4”   2618 18” 1-3/4” 1047 17” 1-1/4”   2619 19” 1-3/4” 1048 18” 1-1/4”   2715 15” 1-3/4” 1070 17” 1-1/4”   2717 17” 1-3/4” 1080 18” 1-1/4”   2718 18” 1-3/4” 1307 17” 2-1/4”   2719 19” 1-3/4” 1308 18-1/4” 2-1/4”   2817 17” 1-1/4” 1309 19-3/8” 2-1/4”   2818 18” 1-1/4” 1312 12” 2-1/4”   5715 15-1/4” 2-3/16” 1313 13” 2-1/4”   5717 17-1/4” 2-3/16” 1314 14” 2-1/4”   5718 18-1/4” 2-3/16” 1315 15-1/4” 2-1/4”   5719 19-1/4” 2-3/16” 1316 16-1/8” 2-1/4”   5720 20-1/4” 2-3/16” 1317 17” 2-1/4”   5917 17-1/4” 2-3/16” 1318 18-1/4” 2-1/4”   5918 18-1/4” 2-3/16” 1319 19-3/8” 2-1/4”   5919 19-1/4” 2-3/16” 1320 12” 2-1/4”   5920 20-1/4 2-3/16” 1330 13” 2-1/4”         1340 14” 2-1/4”         1350 15-1/4” 2-1/4”         1360 16-1/8” 2-1/4”         1370 17” 2-1/4”         1380 18-1/4” 2-1/4”         1390 19-3/8” 2-1/4”         1516 16-1/8” 2-1/4”         1517 17” 2-1/4”         1518 18-1/4” 2-1/4”         1519 19-3/8” 2-1/4”                       Yellow Designates Reverse Rotation Fans

If there is no fan recommended for your application in our Application Guide,
refer to this section to help select your fan.

Click on model number to jump to that page.

To select the best belt-driven fan for your application, you will need to know the following:

1. What is the largest diameter and thickness the fan can be and fit within the shroud or mounting area (while maintaining proper clearances, see p. 24.)?

2. What is the vehicle mainly used for (determine cooling requirement & maximum fan speed requirement)?

3. What type of fan do I want for my vehicle (ex. Flex, clutch, race, or economy fan)?

4. What mounting pattern is used where the fan mounts to the pulley or adapter?

5. Will I need any spacers or adapters to mount and locate the fan (see page 24)?

6. Which direction will the fan rotate? (Standing at the front of the vehicle looking towards the rear, clockwise = standard rotation; counterclockwise = reverse rotation.) This is IMPORTANT!

Using the above criteria, determine what fans are available for your particular application, and from them, select the one that best fits your needs.

Remember to order adapters or spacers (if necessary) and be sure there is adequate clearance around the fan blades

(see p. 24 & 25) before starting the vehicle!