DIRECT FIT MUFFLERS VS. UNIVERSAL MUFFLERS
A muffler is a device for reducing the noise emitted by the exhaust of an internal combustion engine. This noise deadening device is especially one forming part of the exhaust system of an automotive vehicle. It is well known that vehicle replacement parts are available in OEM and aftermarket. Aftermarket parts are usually available either as direct-fit or universal options. We will discuss direct-fit and universal-fit replacement mufflers.
Characteristics of Direct-fit mufflers
Direct-fit mufflers exactly match the design of the OEM part. Direct fit mufflers are designed to bolt on without modification because they are tailored to match all dimensions of your vehicle’s OE muffler when it comes to size, shape, and hanger placement. This makes direct fit mufflers the more straightforward choice, especially if you are planning to do the installation yourself.
Direct fit units are usually priced slightly higher due to costs associated with their more in-depth engineering and design development. Because direct fit mufflers should be very close to the OE design, you should expect to have few or no issues with under-vehicle clearance or fitment with other pipes. It’s reasonable to expect that most direct-fit mufflers are a “bolt-in” type of installation. This is especially true with catalytic converters. A large part of the price difference between direct-fit converters and their universal-fit counterparts is related to how much additional work may be needed during installation. Be sure to factor in the labor costs when considering total cost!
As for Universal-fit mufflers, they come in a specific design and can be made compatible with a number of vehicles with minor alterations. Universal mufflers are created for use on a number of different vehicles so they’ll need to be modified before they fit snugly onto your make and model. Universal mufflers may require cutting of the inlet pipe length, fabrication of new support hangers if muffler hooks don’t line up with ones already on the vehicle, or re-sizing of pipe inlet/outlet diameter through welding, adapters, or clamps to reduce fitment gaps. While some backyard mechanics have the tools and skills to do this, many car owners do not. This means that universal fit mufflers could require professional installation.
Cutting muffler inlet or outlet pipe length may be required on universal mufflers to ensure proper fit on some vehicles.
Tips When Shopping For Mufflers
Manufacturers of direct fit mufflers spent time and money to ensure their product will be a good fit on your vehicle, so it’s a safe bet they’ll advertise that fact clearly. Again, watch for the word “universal” as an indication that some additional work from you or your installer will be involved to get the muffler to fit onto your exhaust system.
