How to Replace Muffler
Learn how to replace muffler with our detailed step-by-step guide. Follow our easy instructions to get it done right.
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0 of 6 steps completedStep-by-Step Instructions
1 Step 1: Identify Muffler Problem
Step 1: Identify Muffler Problem
Check for loud exhaust noise, rust holes, or rattling indicating internal baffles broken.
2 Step 2: Purchase Correct Replacement Muffler
Step 2: Purchase Correct Replacement Muffler
Get direct-fit muffler for your vehicle or universal muffler with proper inlet/outlet size.
Muffler Assembly
Direct-fit replacement muffler for your vehicle
3 Step 3: Lift Vehicle and Spray Penetrant
Step 3: Lift Vehicle and Spray Penetrant
Raise car on stands, spray clamps and hangers with penetrating oil, wait 15 minutes.
Jack Stands Pair
Safety stands for lifting rear of vehicle
Penetrating Oil
Spray for loosening rusted exhaust fasteners
4 Step 4: Cut or Unbolt Old Muffler
Step 4: Cut or Unbolt Old Muffler
Cut exhaust pipe before muffler if rusted, or remove clamps/bolts if accessible.
Reciprocating Saw
Power saw for cutting exhaust pipe
Metal Cutting Blades
Bi-metal blades for cutting exhaust (5-pack)
5 Step 5: Install New Muffler
Step 5: Install New Muffler
Slide new muffler onto pipe, align with hangers, secure with clamps or weld if needed.
Exhaust Clamps
Band clamps for connecting muffler to pipes (2-pack)
Rubber Exhaust Hangers
Replacement hangers for supporting muffler
6 Step 6: Check Alignment and Test
Step 6: Check Alignment and Test
Ensure muffler hangs level and doesn't touch chassis, start engine and check for leaks.
Exhaust Sealant
High-temp paste for sealing exhaust connections