The original Flowmaster 42541 Series 40 Chambered Muffler delivers an aggressive exterior and interior tone. If you’re looking for that original Flowmaster sound, this is the muffler for you. Constructed of 16-gauge aluminized steel and fully MIG-welded for maximum durability.
• Durable, fully welded 16-gauge aluminized steel
• Aggressive sound exterior exhaust tone
• Noticeable interior resonance
• Excellent street/strip application
Specs
Body Dimensions: 4″H x 9.5″W x 13″L
Body Material: Aluminized Steel
Inlet Connection: Slip-Fit
Inlet Inside Diameter: 2.5″
Inlet Outside Diameter: 2.63″
Muffler Overall Length: 19″
Inlet Location: Offset
Outlet Location: Center
Outlet Inside Diameter: 2.5″
Sound Level: Aggressive
Fit: Universal
Vehicle Type: Muscle Car, Street/Strip
Part Number: 42541
Before You Order
Verify part number 42541 exactly Match the listed product details to the part you are replacing before ordering. Compare dimensions, specifications and fitment information with your RV or component.
Frequently Asked Questions
What part number should I verify before ordering?
Verify 42541 on your existing part, documentation or equipment label before ordering.
How should I confirm this part fits?
Compare the listed part number, dimensions, specifications and fitment details with your existing component. Do not rely on appearance alone.






