I have a 2008 Dodge Ram 3500 4WD Quad Cab equipped with a 6.7L Cummins diesel engine. These pads fit perfectly in the back. I use this 15,000 lb 5 Series 4 track tow truck. It's heavy and I work a lot with the clamps when towing. They perform as well or even better than the Original Equipment pads for about half the price of Mopar pads. Don't forget to order brake fittings, brake cleaner, synthetic brake lubricant and some RTV brake fluid at the same time so that you can change the pads professionally. I haven't found these pads to make any more noise than the OEM pads. I am very happy with these pads, but I use expensive original pads in the front. The front brakes take over about 85% of the braking power. Buy with confidence. My truck had about 50,000 miles on it when the front pads needed replacing, but this truck only tows my trailer. The rear wheels almost hit the metal supports at 64,000 miles. Buy some brake fluid and do a full brake flush at the same time. I change the brake fluid about every 3 years to keep moisture out of the fluid. I've never had a problem with a truck and these are the brakes that use that schedule. I also bought a large vacuum pump tank off Amazon with a brake bleed adapter that makes it easy for one person to bleed and I also use it to change the oil in my sailboat diesel engine. Simply connect a bleeder hose to the brake wheel farthest from the master cylinder, bleed the tank first and let it suck out all the nasty old fluid, including all the fluid in the master reservoir. Then continue with the next wheel further away until all 4 brake cylinders are gone. Simply!