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Vehicle Info NeededFLOWMASTERPART NUMBER: 389-818140
818140 American Thunder Cat-Back Exhaust System; Fits Select Toyota; Tundra 3.4-Liter, Cat-Back
$1,29995
3 left in stock
Ships on Sep 14, 2026
Lowest Price GuaranteeAmerican Thunder Cat-Back Exhaust SystemFits Select Toyota; Tundra 3.4-Liter, Cat-Back, Dual out Rear/Side Exit Stainless Steel Sold Individually
Flowmaster 389-818140 Features:
This Flowmaster® American Thunder® cat-back exhaust system for the 2022-2024 Toyota Tundra with the 3.4-liter engine is manufactured using durable 409 stainless steel throughout and features 2.5-inch mandrel bent pipes for better exhaust gas flow. A 50 HD series muffler is used for maximum performance and delivers a moderate sound inside and out. This system offers dual out the rear or side exit options with 3.5-inch polished stainless steel tips for a custom look. The system uses all the existing factory hanger locations and includes installation instructions and all necessary hardware for an easy installation that you can do at home. Backed by Flowmaster's Lifetime Limited Warranty.- 2.50-inch mandrel bent 16-gauge 409 stainless steel tubing maximizes exhaust flow and improves durability
- Dual out the rear or out the side exit options
- Includes complete hardware and factory styled hangers in the stock locations for an easy installation
- 50 HD series muffler delivers a moderate sound level inside and out, along with increased performance
- 3.50-inch polished stainless steel tips add a custom look
- Backed by Flowmaster’s Lifetime Limited Warranty
Part TypeExhaust System
BrandFLOWMASTER
Package Height15.25
Package Width16.0
Package Length63.5
Weight92.0 PG
Muffler Inlet Inside Diameter2.50 in.
Hangers IncludedYes
Main Piping Diameter2.50 in.
Tail Pipe QuantityDual
Inlet TypeFlanged
Exhaust Tip Material304 Stainless Steel
Catalytic Converter Quantity0
Muffler Body Length18 in.
Sound LevelModerate
Muffler Body Material409 Stainless Steel
Exhaust Tip CutAngled
Gasket Or Seal IncludedNo
Exhaust Tip IntercooledNo
Pipe ColorSilver
Muffler Quantity1
Muffler Inlet Outside Diameter2.63 in.
Muffler Flanged OutletNo
Exhaust Tip ResonatedNo
Muffler Outlet LocationDual
Catalytic Converter IncludedNo
Part CategoryPerformance Parts
Exhaust Tip WallDouble Wall
Exhaust Tip Quantity2
Muffler Inlet LocationDual
Exhaust Tip FinishPolished
Exhaust Tip EdgeAngle Cut
Valve IncludedNo
Muffler TypeReflection
Pipe Material409 Stainless Steel
Muffler Body Width10 in.
Tail Pipe Tapered OutletNo
Muffler Body ShapeOval
Mounting Bracket IncludedYes
Muffler Outlet Quantity2
Muffler FinishBlack High-Temperature Paint Finish
Mount TypeUses Factory Hangers
Clamps IncludedYes
FinishNatural
Exit StyleDual Out Rear
Muffler Body Height5 in.
Clamping TypeFlat Band
Muffler Flanged InletNo
Spring Bolt Kit IncludedNo
Muffler Series50 Series HD
Muffler IncludedYes
Exhaust Tip ConnectionClamp-On
Tail Pipe Outlet Outside Diameter2.50 in.
Valve TypeNot Applicable
Exhaust Tip Diameter3.50 in.
Part FitmentDirect Fit
Vendor Part Number818140
Package Qty1
Package TypeEA
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