Brand new massive 21 inch GM Duramax HD cooling fan with special fan clutch which will adapt the Duramax high volume fan to any serpentine belt driven 6.5 Turbo Diesel thru 1999 with flange-mount type clutch (as pictured) in C/K and G/P vans and buses. (excluding motorhomes & H1's) Also available for all 1999 1/2 - 2002 screw-on mount type clutch (additional fee) see our products page. From SSDiesel Supply^TM, the 6.5TD specialists.

Replace your inefficient 8 or 9 blade 20 inch stock fan and tired fan clutch with the massive/aggressive-pitch 21 inch Duramax fan and brand new clutch for less money then just a new fan clutch alone! This blade is the same GM part as used on all Duramax diesel engines. The clutch is a HD made in USA unit modified to adapt the Duramax fan to the 6.5 TD water pump, and engagement is approximately 15DF sooner then your stock clutch for better cooling.

This fan really sucks! Just stand in front of the grill, it will almost pull you in! It will not hurt mileage as the clutch only engages it when necessary. A must for towing, but highly recommended for all 6.5's to prevent overheating, which we all know are prone to. This fan alone makes a big difference in temperature, but in conjunction with our '97 cooling system upgrade, will keep your diesel super cool and prevent the common problem of head cracking. Summer is here, now is the time to get it ready for the heat!

The factory fan shroud will not need trimming in most applications, but some will need a snip of about a 1/2 inch. Takes only minutes to install. Buy from the experts on GM 6.5 TD's.

180 degree thermostats are required for this fan to work properly. We have them available in this category for all year 6.5's.

Note: Will not work on early V-belt applications due to the CW rotation of the water pump. Requires CCW rotation (serp belt) water pump.

May not work on motorhomes.