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How to Replace a Muffler on a Toyota Previa

The Toyota Previa muffler is not a hard one to replace. The hardest part might be locating the correct muffler for the year and model Previa you have. In other words, whether its a DX model Previa or an LE model Previa. Choosing the brand of muffler may be another challenge and then finding the availability of one. Toyota will have one for about $350 plus shipping. However you can find one in the aftermarket world for less than half of that with the same kind of warranty and shipped to you just as quickly. Bosal is a fine import aftermarket exhaust system manufacturer and you can purchase or order them through many local parts stores or find them online. Just make sure you have all the information about our Previa before you do.

Instructions

1

Lift the Previa all the way up on a car lift.

2

Locate the flange connection of the muffler inlet pipe just forward of the rear axle.

3

Put on cutting glasses and gloves and light the torch. Cut the two bolts on the muffler side of the flange connection until they are melted or cut below the flange itself. Turn off the torch.

4

Strike the muffler side of the flange with a hammer to separate the two flanges. If you have to, use the punch and hammer to knock out the cut bolts through the other flange. Once the separation of the flanges are complete, switch over to the safety glasses so you can see better.

5

Remove the muffler hangers (front and rear) from the rubber hangers on the frame of the Previa. Discard the old muffler.

6

Clean any remnants of the old gasket off of the pipe flange where you cut the muffler from using the gasket scraper.

7

Install the new muffler in the same manner you removed the old one. Place the rubber hangers on the frame onto the muffler hangers to hold it in place for you. The rear axle will hold the inlet pipe in place.

8

Insert the new gasket and connect the new muffler flange to the pipe flange. Connect with the 10 millimeter hardware placing the flat washer on the bolt head side of the flange and the lock washer and nut on the other side.

9

Secure the bolt head in place with the box wrench and tighten the nut with the gun and socket. Tighten one side snug. Then bring in the other side. Do not tighten one side securely first and then the other, or you may kink the gasket.

10

Lower the Previa and start it up to check for any leaks at the flange connection.