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Vehicle Info NeededFLOWMASTERPART NUMBER: 389-53553
50 Series Big Block Muffler Offset In/Offset Out 3.5"
$29095
Ships on 09/25/2026
Lowest Price GuaranteeOffset In/Offset Out
50 Series Big Block MufflerOffset In/Offset Out 3.5"
Flowmaster 53553 Features:
The 50 Series Big Block muffler is made for more than just big cubic inch engine applications. Its large case size with internal tuning chamber provides mileage and power gains along with maximum sound control for a quiet interior tone, even under heavy loads. Well suited to heavy duty vehicles such as full size trucks, SUV's, RVs, and tow vehicles. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.
- Improved Horsepower, Torque and Engine Efficiency
- Recommended for SUV/trucks/motorhomes/tow vehicles
- Minimal interior resonance
- Mild to stock exterior exhaust tone
Part TypeMuffler
BrandFLOWMASTER
Package Height5.8
Package Width13.3
Package Length30.5
Weight23.2 PG
Outlet Quantity1
Inlet PositionOffset
Inlet TypeWeld-On
Inlet Size (In.)3.5
Heat Shield AttachedNo
Body Length22 in.
Muffler Count1
Inlet Outside Diameter3.63 in.
Inlet Quantity1
Sound LevelMild
Outlet Outside Diameter3.63 in.
Muffler MaterialSteel
Universal Or Specific FitUniversal
Hanger IncludedNo
Inlet Connection TypePipe Connection
Outlet Diameter3.5 in (88.9 mm)
ColorBlack
TunableNo
Case Length22 in (558.8 mm)
Case ShapeOval
Body Width12 in.
Outlet Inside Diameter3.50 in.
Body Height5 in.
Outlet TypeSingle
Outlet PositionOffset
Part CategoryExhaust Systems & Components
ShapeOval
Exhaust Tip Quantity0
Inlet LocationOffset
Muffler TypeChambered
Outlet StyleStandard, without tip
Muffler FinishAluminized
Mount TypeUses New Hangers (Not Included)
Inlet Diameter3.50 in.
Clamps IncludedNo
FinishHigh-Temperature Paint
ReversibleNo
Outlet Size3.5 in (88.9 mm)
Muffler Series50 Series Big Block
QuantitySold individually
Overall Length28 in.
MaterialAluminized Steel
Internal ConstructionChambered
Body MaterialAluminized Steel
Inlet Inside Diameter3.50 in.
Outlet LocationOffset
FitmentUniversal
Part FitmentUniversal Fit
Vendor Part Number53553
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
