Current & Upcoming Promotions
Past Promotions
Celebrate summer with DEI’s Kickoff To Summer Sales Event. Shop and save 20% on your favorite DEI products from 5/23/24 through 5/27/24. Items with special pricing are discounted deeper than the 20% sale discount. All HT Silicone Spray (Part #’s 10301, 10302, 10303) and Boom Mat Spray (Part#50220) are on sale at $9.99 each. The promotion, Buy a bottle of Radiator Relief (Part#40200) or Radiator Relief for Diesels (Part#40204), Get a Free Bottle of Radiator Relief Flush (Part#40202), a $14.99 value, is limited to one unit per cart. The site wide 20% savings does not apply to items with special pricing or items on clearance. The final sale value will be reflected in your cart total upon checkout. Other exclusions apply. This sale may not be combined with other offers. No product substitutions are permitted, and the retail value of free goods may not be applied towards the sale price.
Black Friday deals are here! Shop and save 20% on your favorite DEI products from 11/23/23 through 11/27/23 except on items with special pricing. Select Exhaust Wrap Kits (10110 - Black Glass Fiber Exhaust & Header Wrap Kit with Black HT Spray, 10111 - Tan Glass Fiber Exhaust Wrap Kit with White HT Spray, and 10112 - Tan Glass Fiber Exhaust Wrap Kit with Aluminum HT Spray) are available at a special Black Friday retail price: regular price $169.99, now $124.99 during this sale only. Select Motorcycle Exhaust Wrap Kits (10330 - Black Glass Fiber Exhaust & Header Wrap Kit with Black HT Spray, 10331 - Tan Glass Fiber Exhaust Wrap Kit with Aluminum HT Spray, and 10332 - Tan Glass Fiber Exhaust Wrap Kit with White HT Spray) are available at a special Black Friday retail price: regular price $82.99, now $59.99 during this sale only. The sitewide 20% does not apply to special pricing. Final sale value will reflect in your cart total upon checkout. Buy any Boom Mat or Boom Mat XL package with 10 or more sheets (50212, 50214, 50224, 50210, 50223) and get one free utility knife and one free installation roller included with your order (Roller is $22.99 value, Utility Knife is a $24.99 value). Offer not valid with Boom Mat Flex products. Other exclusions may apply. This sale may not be combined with other offers. No product substitutions are permitted and the retail value of the free goods may not be applied towards the final sale price. One free Utility Knife & Roller per order.
You've worked hard all year, now it's time to take a break. Celebrate Labor Day with us! Shop and save 20% on your favorite DEI products from 9/1/23 through 9/4/23. Exclusions may apply. This sale may not be combined with other offers.