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Vehicle Info NeededFLOWMASTERPART NUMBER: 389-530513
50 Series Big Block Muffler Dual In 3"/Single Offset Out 3.5"
$29995
Ships on 09/25/2026
Lowest Price GuaranteeDual In/Offset Out
- 50 Series Big Block Muffler
- Dual In 3"/Single Offset Out 3.5"
Includes adapter pipe for 2001-04 GM 6.0L HD
Part TypeMuffler
BrandFLOWMASTER
Package Height6.0
Package Width14.5
Package Length39.9
Weight26.75 PG
Outlet Quantity1
Inlet PositionFront
Inlet TypeWeld-On
Inlet Size (In.)3
Heat Shield AttachedNo
Body Length22 in.
Muffler Count1
Inlet Outside Diameter3.13 in.
Inlet Quantity2
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 LocationDual
Muffler TypeChambered
Outlet StyleStandard, without tip
Muffler FinishAluminized
Mount TypeUses New Hangers (Not Included)
Inlet Diameter3 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 in.
Outlet LocationOffset
FitmentUniversal
Part FitmentUniversal Fit
Vendor Part Number530513
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
