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Vehicle Info NeededFLOWMASTERPART NUMBER: 389-818138
818138 Outlaw Extreme Cat-Back Exhaust System; Fits Select Toyota; Tundra 3.4-Liter, Cat-Back
$46795
2 left in stock
Ships on Sep 14, 2026
Lowest Price GuaranteeOutlaw Extreme Cat-Back Exhaust SystemFits Select Toyota; Tundra 3.4-Liter, Cat-Back, Single Out Dump Exit Stainless Steel Sold Individually
Flowmaster 389-818138 Features:
This Flowmaster® Outlaw Extreme 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 3.0-inch mandrel bent pipes for better exhaust gas flow. A race inspired Outlaw series muffler is used for maximum performance and delivers an aggressive sound inside and out. This system exits under the truck with a dump style turn down tip for added style and better ground clearance when driving off-road. 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.- 3.00-inch mandrel bent 16-gauge 409 stainless steel tubing maximizes exhaust flow and improves durability
- Turn down exit under the truck increases clearance for extreme off-roading
- Includes complete hardware and factory styled hangers in the stock locations for an easy installation
- Outlaw series muffler delivers an aggressive sound level inside and out, along with increased performance
- Backed by Flowmaster’s Lifetime Limited Warranty
Part TypeExhaust System
BrandFLOWMASTER
Package Height9.75
Package Width15.25
Package Length49.0
Weight17.0 PG
Part CategoryPerformance Parts
Muffler Body Diameter4 in.
Exhaust Tip Quantity0
Muffler Inlet LocationCenter
Valve IncludedNo
Muffler TypeReflection
Pipe Material409 Stainless Steel
Muffler Inlet Inside Diameter3 in.
Hangers IncludedYes
Muffler Body Width4 in.
Main Piping Diameter3 in.
Tail Pipe QuantitySingle
Tail Pipe Tapered OutletNo
Inlet TypeClamp-On
Muffler Body ShapeRound
Mounting Bracket IncludedNo
Muffler Outlet Quantity1
Muffler FinishBlack High-Temperature Paint Finish
Catalytic Converter Quantity0
Mount TypeUses Factory Hangers
Clamps IncludedYes
Muffler Body Length10.50 in.
Sound LevelAggressive / Moderate
FinishNatural
Exit StyleSingle Out Dump
Muffler Body Material409 Stainless Steel
Muffler Body Height4 in.
Clamping TypeFlat Band
Muffler Flanged InletNo
Gasket Or Seal IncludedNo
Spring Bolt Kit IncludedNo
Muffler SeriesOutlaw
Exhaust Tip IntercooledNo
Pipe ColorSilver
Muffler IncludedYes
Muffler Quantity1
Muffler Inlet Outside Diameter3.13 in.
Tail Pipe Outlet Outside Diameter3 in.
Valve TypeNot Applicable
Muffler Flanged OutletNo
Muffler Outlet LocationCenter
Part FitmentDirect Fit
Catalytic Converter IncludedNo
Vendor Part Number818138
Package Qty1
Package TypeEA
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