2003 Subaru Impreza Exhaust Upgrade Parts
96 parts verified to fit your 2003 Subaru Impreza for a complete exhaust upgrade. A moderate DIY project — estimated 2-5 hours.
Cat-Back Exhaust
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Invidia
Invidia 02-07 WRX/STi 80mm Full Titanium Cat-back Exhaust
$1471.96
Invidia
Invidia 02-07 WRX/STi 76mm Q300 Stainless Steel Cat-back Exhaust
$1194.19
Invidia
Invidia 02-07 WRX/STi 76mm N1 REGULAR Titanium Tip Cat-back Exhaust
$1138.00
Invidia
Invidia 02-07 WRX/STi 76mm N1 RACING Titanium Tip Cat-back Exhaust
$996.49
Turbo XS
Turbo XS 02-07 WRX-STi Catback Exhaust Blued Tips
$631.24
Turbo XS
Turbo XS 02-07 WRX-STi Catback Exhaust Polished Tips
$664.47
Invidia
Invidia 02-07 WRX/STi 76mm N1 REGULAR Stainless Steel Tip Cat-back Exhaust
$1138.00
COBB
Cobb 02-07 WRX/STi Catback Exhaust
$926.72
Headers
(5)primary
aFe
aFe Power Twisted Steel Long Tube Header 02-19 Subaru Impreza WRX/STI/Legacy (Unequal Length)
$940.99
Borla
Borla 02-14 WRX / 04-18 STi Header
$936.99
Fel-Pro
Fel-Pro 15-20 Subaru WRX/13-20 WRX STI/17-20 Toyota 86 Exhaust Manifold Gasket Set
$13.36
Victor Reinz
MAHLE Original Saab 9-2X 06-05 Exhaust Manifold Set
$15.30
Victor Reinz
MAHLE Original Subaru Baja 06-04 Exhaust Manifold Set
$16.54
Mufflers
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Magnaflow
MagnaFlow Conv Universal 2.50 Angled Inlet OEM
$178.00
Fel-Pro
Fel-Pro 13-14 Subaru WRX/13-21 WRX STI/05-09 Outback Exhaust Pipe Flange Gasket
$8.50
Magnaflow
MagnaFlow Conv Univ 2.00inch 1-O2 Rear 50 State
$517.00
Magnaflow
MagnaFlow Conv Univ 2.00inch w/ single O2
$182.00
Cometic Gasket
Cometic Subaru EJ205/EJ255/EJ257 .030in MLS Exhaust Turbo Inlet Gasket
$9.55
Magnaflow
MagnaFlow Conv Univ 2.00inch
$170.00
Torque Solution
Torque Solution Subaru 3in Aftermarket Downpipe To OEM Catback Exhaust Adapter
$54.75
Victor Reinz
MAHLE Original Saab 9-2X 06-05 Exhaust Pipe Flange Gasket
$7.35
Exhaust Upgrade for Other Subaru Impreza Years
Other Jobs for Your 2003 Subaru Impreza
Frequently Asked Questions
What parts do I need for a exhaust upgrade on my 2003 Subaru Impreza?
A complete exhaust upgrade on the 2003 Subaru Impreza typically requires cat-back exhaust, headers, mufflers. All parts shown on this page are verified to fit your specific vehicle.
How long does a exhaust upgrade take on a 2003 Subaru Impreza?
A exhaust upgrade typically takes 2-5 hours and is rated as moderate difficulty. Actual time may vary depending on your experience and the specific parts being replaced.
Can I do a exhaust upgrade myself?
A exhaust upgrade is a moderate DIY project. If you have some mechanical experience and the right tools, you can handle it. Otherwise, consider having a professional do the work.
Are these parts guaranteed to fit my 2003 Subaru Impreza?
Yes, all parts on this page are verified to fit the 2003 Subaru Impreza using VCDB fitment data from manufacturers. Our fitment information is cross-referenced with industry-standard vehicle databases to ensure accuracy.
What brands make exhaust upgrade parts for the 2003 Subaru Impreza?
We carry exhaust upgrade parts from trusted brands including Invidia, Turbo XS, COBB, Borla, and GReddy. Filter by brand to find your preferred manufacturer.
How much does a exhaust upgrade cost for a 2003 Subaru Impreza?
The cost of a exhaust upgrade for the 2003 Subaru Impreza depends on the parts and brands you choose. Browse the parts on this page to see current pricing. Doing the work yourself saves significantly on labor costs.