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Flowmaster 943042 40 Series Delta Flow Muffler, 3.00 In/Out
Flowmaster 943042 40 Series Delta Flow Muffler, 3.00 In/Out

Flowmaster 943042 40 Series Delta Flow Muffler, 3.00 In/Out

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Flowmaster 943042 40 Series Delta Flow Muffler, 3.00 In/Out
Flowmaster 943042 40 Series Delta Flow Muffler, 3.00 In/Out
Flowmaster 943042 40 Series Delta Flow Muffler, 3.00 In/Out
Flowmaster 943042 40 Series Delta Flow Muffler, 3.00 In/Out
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Flowmaster 943042 40 Series Delta Flow Muffler, 3.00 In/Out
Flowmaster 943042 40 Series Delta Flow Muffler, 3.00 In/Out
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Part # 378943042
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This two chamber design incorporates Flowmaster's patented Delta Flow technology. The Delta deflectors generate increased scavenging for better performance and reduced interior sound. Milder exterior tone and reduced interior resonance over Original 40 series. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.

Important Messages:

  • This product is discontinued.
  • This item ships directly from the manufacturer. It may take an additional business days for Flowmaster to ship this item.
  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
  • This item ships via Ground Shipping only. Expedited and Air shipping options are not available.
  • This item 378943042 is made to order. It will be shipped from our warehouse when it is produced.
Some parts are not legal for use in California or other states with similar laws/regulations

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  • Pat shows that exhaust can make a difference on even your daily driver. Check out this video of Pat with the Hooker Muffler installed on his '03 Suburban.
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  • Maintaining your headers is an important part of any hot rod. Pat gives some tips and demonstrates how well Purple Metal Polish works for keeping your headers looking great.
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