* Shape: A cylindrical or oval-shaped metal canister. It's likely to be somewhat larger than you might expect.
* Size: Several inches in diameter and length – considerably longer than a muffler.
* Location: It's typically located in the exhaust system, close to the engine and before the muffler. It's usually positioned underneath the vehicle, near the transmission/transfer case area. You'll likely find it connected to the exhaust manifold on one end and the exhaust pipe/muffler on the other.
* Appearance: The outer shell is usually stainless steel and will be covered in a layer of heat shielding (often a sort of metallic cloth or foil). It may show some discoloration from exhaust heat. You might see some weld seams. There are usually no easily visible markings or labels on the converter itself.
To be sure:
The best way to identify it is to consult a repair manual specific to your 1998 Dodge Ram 1500's engine size and configuration. A diagram in the repair manual will show you the exact location and appearance of the catalytic converter for your specific model. You can also use online parts diagrams, entering your vehicle's VIN for precise identification. Many auto parts websites allow you to look up parts using the VIN.
Important Note: Catalytic converters are hot when the engine is running. Do not touch them. They also contain precious metals and are often targets for theft.
