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MagnaFlow Magnapack Sys C/B Ford Mustang Gt 4.6L 99-04

SKU: MAG15673

Exhaust Systems

MAG Catback Exhaust

MagnaFlow Magnapack Sys C/B Ford Mustang Gt 4.6L 99-04

SKU: MAG15673

Exhaust Systems

MAG Catback Exhaust

A$2,383.23
Available from MFR. This item is available from the manufacturer's distribution centre. The dispatch timeframe shown is an estimate based on historical order processing and release times for this part. This item is not held in our own warehouse, and actual dispatch timing may vary depending on manufacturer workload and logistics at the time of ordering.
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Description

The MagnaFlow Ford Mustang Competition Series Cat-Back Performance Exhaust System brings an aggressive, attention-grabbing edge to the deep resonant exhaust note we're so well known for. This exhaust kit is designed to enhance your 4.6L Ford Mustang with dyno-proven performance made possible thanks to fast-flowing mandrel bent 2.5in. main piping and 2 Straight-Through mufflers ending in a Dual Split Rear exit with 3.5in. Polished Clamp-On Single Wall Angle Cut Edge tips featuring a sporty finish. The exhaust system's cat-back layout replaces your ride's exhaust system from near the catalytic converter on back. Exhaust system 15673 is engineered to make your vehicle's engine produce Aggressive exterior and Moderate interior sound levels, befitting its competition-oriented design. 15673's direct-fit design makes installation a breeze thanks to the use of advanced 3D scanning techniques. This performance exhaust system is made of 100% durable and corrosion-resistant stainless steel and produced using CNC precision robotic manufacturing, all backed by MagnaFlow's limited lifetime warranty. Please check to ensure compliance with local noise regulations.

Product Overview

The MagnaFlow 1999-2004 Ford Mustang Competition Series Cat-Back Performance Exhaust System 15673 brings an aggressive, attention-grabbing edge to the deep resonant exhaust note we're so well known for. This exhaust kit is designed to enhance your 4.6L 1999-2004 Ford Mustang with dyno-proven performance made possible thanks to fast-flowing mandrel bent 2.5in. main piping and 2 Straight-Through mufflers ending in a Dual Split Rear exit with 3.5in. Polished Clamp-On Single Wall Angle Cut Cut Edge tips featuring a sporty finish. The exhaust system's cat-back layout replaces your ride's exhaust system from near the catalytic converter on back. Exhaust system 15673 is engineered to make your vehicle's engine produce Aggressive exterior and Moderate interior sound levels, befitting its competition-oriented design. 15673's direct-fit design makes installation a breeze thanks to the use of advanced 3D scanning techniques. This performance exhaust system is made of 100% durable and corrosion-resistant stainless steel and produced using CNC precision robotic manufacturing, all backed by MagnaFlow's limited lifetime warranty. Please check to ensure compliance with local noise regulations.


Features and Benefits

  • Crafted From 409 Stainless Steel With All Mandrel-Bent Tubing
  • Increased Horsepower And Torque
  • Aggressive Exterior Sound

Product Details

Anticipated Ship Out Time:Approximately 1-2 Days
Attachment Style:Bolt-On
Attachment Type:Bolt-On
Catalytic Converter Quantity:0
Clamp Type:Band Clamp
Clamping Type:Band Clamp
Clamps Included:Yes
Color/Finish:Stainless
Components:Band Clamp=6
Description:Competition Series Stainless Cat-Back System
Exhaust Inlet Connection Type:Bolt-On
Exhaust Pipe Material:Stainless
Exhaust Tip Connection:Clamp-On
Exhaust Tip Cut:Angle Cut
Exhaust Tip Diameter:3.5
Exhaust Tip Edge:Cut Edge
Exhaust Tip Finish:Polished
Exhaust Tip Intercooled:No
Exhaust Tip Length:16
Exhaust Tip Material:Stainless Steel
Exhaust Tip Quantity:2
Exhaust Tip Resonated:No
Exhaust Tip Shape:Round
Exhaust Tip Wall:Single Wall
Exhaust Type:Dual
Exit Location:Dual Split Rear
Exit Position:Dual Split Rear
Exit Quantity:Dual
Exit Style:Dual Split Rear
Finish:Stainless
Gasket Included:No
Gasket Or Seal Included:No
Hangers Included:Yes
Inlet Connection Type:Bolt-On
Inlet Inside Diameter:2.500 in.
Inlet Type:Bolt-On
Main Piping Diameter:2.500 in.
Material:Stainless
Mounting Bracket Included:No
Muffler Body Diameter:4.000 in. x 4.000 in.
Muffler Body Finish:Polished
Muffler Body Height:4.000 in.
Muffler Body Length:14.000 in.
Muffler Body Material:Stainless Steel
Muffler Body Shape:Round
Muffler Body Width:4.000 in.
Muffler Count:2
Muffler Finish:Brushed
Muffler Material:Stainless Steel
Muffler Quantity:2
Muffler Type:Straight-Through
Outlet Outside Diameter:3.500 in.
Part Number:mag15673
Pipe Material:Stainless Steel
Prop 65 Y/N:No
Recommended Use:Performance
Series:Competition
Sound Level:Aggressive
Subtitle:Cat-Back Performance Exhaust System
Subtitles:Cat-Back
System Type:Cat Back
Tail Pipe Diameter:2.500 in.
Tip Diameter:3.500 in.
Tip Finish:Polished
Tip Length:16.000 in.
Tip Material:Stainless Steel
Tip Quantity:2
Tip Shape:Round
Tip Type:Clamp-On
Title:MagnaFlow 1999-2004 Ford Mustang Competition Series Cat-Back Performance Exhaust System
Tubing Diameter:2.500 in.
Type:Cat-Back
Valve Included:No
Valve Type:None
WARNING CA Proposition 65:No
Warranty:Lifetime

Part Type

Exhaust System Kit

Data: v4.2 - Upd: 2026-09-29 07:23:40

Features

  • Aggressive exterior sound
  • Crafted From 409 Stainless Steel With All Mandrel-Bent Tubing
  • Increased Horsepower And Torque

Specifications

Product Attributes - Brand
MagnaFlow
Product Attributes - Manufacturer's Part Number
15673
Product Attributes - Part Type
Exhaust Systems
Product Attributes - Product Line
MagnaFlow Competition Series Exhaust Systems
Product Attributes - UPC
841380004826
Product Attributes - System Material
409 stainless steel
Product Attributes - System Style
Cat-back
Product Attributes - Exhaust Type
Dual
Product Attributes - Exit Location
Split rear
Product Attributes - System Finish
Natural
Product Attributes - Catalytic Converter(s) Included
No
Product Attributes - Intermediate Pipe Diameter (in.)
2.50 in.
Product Attributes - Muffler Included
Yes
Product Attributes - Muffler Quantity
Two
Product Attributes - Muffler Configuration
Single inlet/Single outlet
Product Attributes - Muffler Style
Perforated tube with packing
Product Attributes - Muffler Material
409 stainless steel
Product Attributes - Muffler Finish
Polished
Product Attributes - Hardware Included
Yes
Product Attributes - Tailpipe Diameter (in.)
2.50 in.
Product Attributes - Tip Included
Yes
Product Attributes - Tip Outlet Size (in.)
3.50
Product Attributes - Tip Quantity
2
Product Attributes - Tip Shape
Round
Product Attributes - Tip Cut
Straight
Product Attributes - Tip Edge Style
Non-rolled edge, single-wall
Product Attributes - Tip Material
304 stainless steel
Product Attributes - Tip Color
Polished
Product Attributes - Remanufactured
No
Product Attributes - Quantity
Sold as a kit.
Product Attributes - Notes
Depending on vehicle configuration, some modifications may be required. See installation instructions for details, if applicable. Magnapack system uses round style mufflers for a more aggressive tone. Designed for original equipment components. Aftermarket headers Y or H pipe may require fabrication for proper fit. Must re-use original fasteners and rubber insulators.
Product Attributes - Special Attention
It is illegal to install parts or components that bypass, defeat, or render inoperative the manufacturers’ technology and design necessary to reduce vehicle emissions to meet state and federal Clean Air Act standards.

Reference Information

Brand Name/s Magnaflow
StreetFX SKU mag15673
SFX Item ID 4284591
Supplier Item Code 4284591
Manufacturer SKU 15673
Manufacturer UPC 841380004826
Alternative References mpe-15673, MFL15673, 4.6L

Compatibility

Application Data
  • UniversalNo
    MakeFORD
    ModelMUSTANG
    SubmodelGT
    Beginning Year1999
    Ending Year2004
    Engine TypeV8
    Liter4.6
    CID281
    Engine Size4.6L/281
    Engine FamilyFord modular V8
    Body StyleConvertible
    TransmissionAutomatic
    DrivetrainRWD
    Application NotesDual Split Rear Exit; 2.5in. Tubing
    Engine VIN CodeX
  • UniversalNo
    MakeFORD
    ModelMUSTANG
    SubmodelGT
    Beginning Year1999
    Ending Year2004
    Engine TypeV8
    Liter4.6
    CID281
    Engine Size4.6L/281
    Engine FamilyFord modular V8
    Body StyleConvertible
    TransmissionManual
    DrivetrainRWD
    Application NotesDual Split Rear Exit; 2.5in. Tubing
    Engine VIN CodeX
  • UniversalNo
    MakeFORD
    ModelMUSTANG
    SubmodelGT
    Beginning Year1999
    Ending Year2004
    Engine TypeV8
    Liter4.6
    CID281
    Engine Size4.6L/281
    Engine FamilyFord modular V8
    Body StyleCoupe
    TransmissionAutomatic
    DrivetrainRWD
    Application NotesDual Split Rear Exit; 2.5in. Tubing
    Engine VIN CodeX
  • UniversalNo
    MakeFORD
    ModelMUSTANG
    SubmodelGT
    Beginning Year1999
    Ending Year2004
    Engine TypeV8
    Liter4.6
    CID281
    Engine Size4.6L/281
    Engine FamilyFord modular V8
    Body StyleCoupe
    TransmissionManual
    DrivetrainRWD
    Application NotesDual Split Rear Exit; 2.5in. Tubing
    Engine VIN CodeX
  • UniversalNo
    MakeFORD
    ModelMUSTANG
    SubmodelGT BULLITT
    Beginning Year2001
    Ending Year2001
    Engine TypeV8
    Liter4.6
    CID281
    Engine Size4.6L/281
    Engine FamilyFord modular V8
    Body StyleCoupe
    TransmissionAutomatic
    DrivetrainRWD
    Application NotesDual Split Rear Exit; 2.5in. Tubing
    Engine VIN CodeX
  • UniversalNo
    MakeFORD
    ModelMUSTANG
    SubmodelGT BULLITT
    Beginning Year2001
    Ending Year2001
    Engine TypeV8
    Liter4.6
    CID281
    Engine Size4.6L/281
    Engine FamilyFord modular V8
    Body StyleCoupe
    TransmissionManual
    DrivetrainRWD
    Application NotesDual Split Rear Exit; 2.5in. Tubing
    Engine VIN CodeX
  • UniversalNo
    MakeFORD
    ModelMUSTANG
    SubmodelMACH 1
    Beginning Year2003
    Ending Year2004
    Engine TypeV8
    Liter4.6
    CID281
    Engine Size4.6L/281
    Engine FamilyFord modular V8
    Body StyleCoupe
    TransmissionAutomatic
    DrivetrainRWD
    Application NotesDual Split Rear Exit; 2.5in. Tubing
    Engine VIN CodeR
  • UniversalNo
    MakeFORD
    ModelMUSTANG
    SubmodelMACH 1
    Beginning Year2003
    Ending Year2004
    Engine TypeV8
    Liter4.6
    CID281
    Engine Size4.6L/281
    Engine FamilyFord modular V8
    Body StyleCoupe
    TransmissionManual
    DrivetrainRWD
    Application NotesDual Split Rear Exit; 2.5in. Tubing
    Engine VIN CodeR

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