Wellman Glow Plugs Diesel Fast Start (Set of 8) compatible with 2001-2004 Chevy GMC 2500 3500 6.6L DURAMAX LB7

For the 2001-2004 LB7 Duramax engines. Premium wellman (0058) dual-element, self regulating glow plugs. (Set of eight). These plugs fit any 6.6 Duramax. These plugs heat up 20% faster and get 100 deg. Hotter than the original plugs. Wellman has made oem glow plugs for gm for 20 years, now they have updated and improved the design for the duramax plugs. These updated plugs offer a noticeable improvement in cold weather starting. Wellman has put considerable design effort into these new plugs to ensure that they not only start better, but have improved service life. Special attention has been paid to the plug tips in order to minimize potential swelling that can occur as the plugs age. Some lesser plugs can swell so big at the tip that they won't come back out of the head, that's a problem you don't need. Tested two times at the factory before shipping. Pricing is for the set of 8. Beware of inexpensive plug sets selling in the $50-$60 range are usually chinese knock-offs, prone to swell and break. Their selling price is less than our cost on these premium wellman plugs. By now, most americans should know, get what you pay for. We have no problems with others selling their products cheap; they know what their stuff is worth! Made in shelbyville, indiana, usa warranted by wellman automotive products for one full year.