Diamond Power Timing Chain Kit works with Jeep Grand Cherokee Comanche Wrangler Wagoneer 4.0L 242CID OHV 12V L6 OHV 1987-2000 Belt Warranty (25,000 Miles), Chain Warranty (38,000 Miles) (This product must be installed by a certified professional mechanic) Same day shipping when purchased before 3pm EST Our products are tested and meet or exceed OEM performance requirements Fits 87-93 JEEP CHEROKEE 4.0L 242CID OHV 12V L6 Available Timing Chain Kits and Timing Belt Kits