Hooper’s differential assemblies are guaranteed for satisfactory operation and against defective workmanship and materials for 90 days without mileage limitation. Under no circumstances will we recognize claims for consequential damages or accept liability for parts damaged though improper installation, abuse or undue strain such as, but not limited to the following examples; oversize tires, wheel spacers, exceeding Gross Vehicle Weight (GVW) or any type of racing. No guarantee on any Posi-traction type device or  “Posi-Chatter” due to rear tires of unequal circumference. Our guarantee is limited to replacement of defective unit or part only, when available, after inspection at our facility. No refund on special orders. Deposits void after 30 days. 20% restocking fee on returned merchandise. NO WARRANTY ON CUSTOMER PROVIDED PARTS. Customer to “ADD OIL” to Rear End. Initial inspection charge applies if vehicle is lifted by Hooper’s employee or if after inspection, repairs are not performed by Hoopers Rear Ends. Any vehicle left after 48 hours of notification will be charged $50.00 per day storage fee. Subject to change without notice.