This muffler fits my '98 Jeep Cherokee 4.0 perfectly. It emits a low hum, a little louder than the stock muffler, but it sounds good and not annoying. If you are looking for a muffler that will make your Cherokee as quiet as a Lexus or Mercedes then this isn't the one! I've been looking for something similar to an OEM muffler, but I can live with a low rumble. Due to the fact that it is stainless steel, this silencer will last a long time.