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Exhaust› Mufflers and Resonators

Flowmaster

70 Series Chambered Muffler 70 Series 3.00 Center In 3.00 Center Out Mild Sound Flowmaster

$281.95 $249.95 Save $32.00

SKU: F00L 53070

In Stock
In Stock
Ships by Aug 2
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

Part #: 53070

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.Improved Horsepower, Torque and Engine EfficiencyRecommended for SUV/trucks/motorhomes/tow vehiclesMinimal interior resonanceMild to stock exterior exhaust tone

Features:

  • Durable Fully Welded 16ga Aluminized Steel
  • Improved Horsepower, Torque and Engine Efficiency
  • 3 Year Limited Warranty
  • Recommended for SUV/trucks/motorhomes/tow vehicles
  • Stock to Mild Exterior Exhaust Tone
  • Minimal interior resonance
  • Minimal Interior Resonance
  • Mild to stock exterior exhaust tone
  • Recommended For SUV/Trucks/Motorhomes/Tow Vehicles
  • Improved HP/TQ and Potential Mileage Improvement
  • Race Proven Patented Delta Flow (R) Technology
  • Premium Flowmaster Quality

Muffler - 70 Big Block II - 3 in Center Inlet - 3 in Center Outlet - 22 x 10 x 5 in Oval Body - 28 in Long - Steel - Black Paint - Universal - Each

MIA's Description

The Flowmaster 53070 is a 70 Series Big Block II muffler with a 3-inch center inlet and a 3-inch center outlet. It features Flowmaster's Delta Flow technology and an enlarged case for improved sound control, mileage, and power gains. Constructed from 16-gauge aluminized steel with fully MIG-welded seams, this muffler is designed for durability.

Fitment

Fitment Guaranteed

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandFlowmaster
Part NumberF00L 53070

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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