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Flowmaster

Flowmaster 70 Series Chambered Muffler

Part # 53070 Be the first to write a review

70 Series - 3.00 Center In / 3.00 Center Out - Mild Sound

Flowmaster 70 Series Chambered Muffler

Estimated Ship Date: 06/15/2026
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Advertised Price $249.95
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Emissions

This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

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The 70 series utilizes Flowmaster's Delta Flow® technology and an enlarged case for improved sound control along with mileage and power gains. Perfect for use on trucks, SUV's, RVs, tow vehicles and high performance street cars where space allows. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.

Features:

  • Improved Horsepower, Torque and Engine Efficiency
  • Recommended for SUV/trucks/motorhomes/tow vehicles
  • Minimal interior resonance
  • Mild to stock exterior exhaust tone
Body Height5.00 IN
Body Length22.00 IN
Body Width10.00 IN
Brand Flowmaster
California Proposition 65No
CategoryExhaust
Clamps IncludedNo
ColorBlack
Emission Code5
Exhaust Tip Quantity0
Sold Separately
FinishHigh-Temperature Paint
Grade TypePerformance
Hanger IncludedNo
Heat Shield AttachedNo
Inlet ConnectionSlip-Fit
Inlet Inside Diameter3.00 IN
Inlet LocationCenter
Inlet Outside Diameter3.13 IN
Inlet Quantity1
Inlet TypeClamp-On
Weld-On
Muffler Series70 Series Big Block
Muffler TypeChambered
Outlet ConnectionSlip-Fit
Outlet Inside Diameter3.00 IN
Outlet LocationCenter
Outlet Outside Diameter3.13 IN
Outlet Quantity1
Outlet TypeSingle
Overall Length28.00 IN
part typeExhaust Muffler
Product TypeStreet Mufflers
ReversibleNo
ShapeOval
Sound LevelMild
Sub CategoryMufflers
TunableNo
Universal Or Specific FitUniversal
Vehicle TypeClassic Muscle Car
Street/Strip
Truck/SUV
UPC700042014460
Part Number53070
5

This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.
Instructions - Flowmaster Warranty 26 Update.pdf
Instructions - street_applications.pdf
Universal Muffler - Some adaptation may be required.

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    Some parts are not legal for use in California or other states with similar regulations.