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Vehicle Info NeededFLOWMASTERPART NUMBER: 389-430402
40 Series Original Muffler Center In 3"/Dual Out 2.5"
$10195
More than 10 available
Ships on Nov 02, 2026
Lowest Price GuaranteeCenter In/Dual Out
- 40 Series Original Muffler
- Center In 3"/Dual Out 2.5"
- Aluminized Steel
Universal Muffler - Not a direct fit. Some adaptation required.
The Muffler That Started It All!
Flowmaster's 40 Series Original Mufflers are designed for street/strip and off-road use. These aggressive sounding mufflers deliver a powerful, classic "Flowmaster Sound" from both inside and outside of the vehicle. Give your exhaust system a great muscle car tone with one of these fully MIG welded 40 Series original mufflers.
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Features:
- The original high-performance muffler
- Aggressive sound
- Constructed from stainless steel or 16-gauge aluminized steel
- Fully MIG welded
Part TypeMuffler
Product LineFlowmaster 40 Series Original Mufflers
BrandFLOWMASTER
Package Height4.5
Package Width10.0
Package Length19.8
Weight10.4 PG
Part CategoryPerformance Parts
ShapeOval
Exhaust Tip Quantity0
Outlet Quantity2
Inlet LocationCenter
Muffler TypeChambered
Inlet PositionCenter
Inlet TypeWeld-On
Inlet Size (In.)3
Heat Shield AttachedNo
Outlet StyleStandard, without tip
Muffler FinishAluminized
Mount TypeUses New Hangers (Not Included)
Body Length13 in.
Muffler Count1
Inlet Outside Diameter3.13 in.
Inlet Diameter3 in.
Clamps IncludedNo
Inlet Quantity1
Sound LevelAggressive
FinishHigh-Temperature Paint
Outlet Outside Diameter2.63 in.
Muffler MaterialSteel
ReversibleNo
Universal Or Specific FitUniversal
Outlet Size2.5 in (63.5 mm)
Hanger IncludedNo
Inlet Connection TypePipe Connection
Outlet Diameter2.5 in (63.5 mm)
ColorBlack
Muffler SeriesOriginal 40 Series
TunableNo
QuantitySold individually
Overall Length19 in.
MaterialAluminized Steel
Case Length13 in (330.2 mm)
Internal ConstructionChambered
Case ShapeOval
Body Width9.50
Outlet Inside Diameter2.50 in.
Body MaterialAluminized Steel
Inlet Inside Diameter3 in.
Outlet LocationDual
Body Height4 in.
Outlet TypeDual
Part FitmentUniversal
Outlet PositionRear
Vendor Part Number430402
Package Qty1
Package TypeEA
No Questions
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Some parts are not legal for use in California or other states with similar laws / regulations
