Dodge Ram pickup trucks in the 4-wheel drive model have several different types of transmissions in them. When you are searching for a new ram 1500 4x4 transmission or need yours serviced you may be able to see your transmission number on your truck. Open the driver's side front door and look at the white manufacturer's tag with small black letters on it. Underneath or beside the "TR" letters you will find a number code of your transmission. You may also find it in your owner's manual under the drive train information.
You can figure out your transmission number from some common models depending on your engine size and how many speeds are on your transmission. The 5-45RFE transmission for a Ram 1500 2008 four-wheel drive fits in a 5 speed, V8 that is 4.7L or 5.7L. It also fits in a 2003 to 2007 model 5 speed, V6, 3.7L, and a V8, 4.7L and 5.7L. A 2005 to 2006 model with a four-speed uses a V10, 8.3L engine, and uses a 48RE transmission. As you can see, this list can be extensive and it's best to trust your transmission needs to a professional mechanic.
If you are a mechanic shop and a Dodge Ram 2500 comes in and needs a new transmission, you have some important questions to ask yourself before you decide if you want to replace the faulty one with a new one or a dodge ram 2500 remanufactured transmission https://reman-transmission.com/transmissions/dodge/ram_2500. A rebuilt transmission only has the parts that are worn out replaced, however, a remanufactured transmission is totally re-done with all the same tolerances as a factory-built new transmission.
Some general mechanic shops don't get a lot of transmission jobs and they won't be able to keep a professional rebuilder on staff. This is when you will want to purchase used transmissions or rebuilt transmissions for your customers. Keep in mind that a remanufactured transmission may be less expensive than the cost of all the parts to have one rebuilt for you because you can get them from someone who does rebuilds daily and keeps a large amount of them in stock and ready to go.
When you purchase a reman transmission, it's updated with the latest technology and may surpass a new transmission in the same model that has been sitting on a shelf for years. Another great advantage of a reman unit is that your shop doesn't carry the warranty for it to work properly, but the company you buy it from does, giving you less liability for a win-win situation. https://www.nadaguides.com/Cars/dodge/ram-1500