Engine

Here you will find all the components under the hood of your performance street car. From oil changes to short blocks and everything in between. Not sure whats right for your vehicle? Contact sales@builtnotboughtauto.com 

Features: Heavy Gauge Steel Tubing That is 3x Thicker than OE 3/8" 1018 CR Steel Flange 12 Gauge...
-7%
Turbosmart Recirculating Blow Off Kompact Plumb Back Universal 34mm
These blow off valves are design to be a better than OEM replacement, yet outperform when it comes...
-10%
Turbosmart BOV Kompact Dual Port for 2013+ Focus ST
50/50 Vented valve Specifically designed to suit BorgWarner EFR and KKK turbochargers Billet aluminum construction Use sealed O-Ring...
-32%
Koyo Aluminum Racing Radiator (Manual Transmission) For 2003-2007 WRX/STI
All aluminum construction Heli-arc welded for stronger enforcement along aluminum connections Thicker core Precise tube and fin alignment...
Mishimoto 08-14 Subaru WRX / 08-15 STi / 05-09 Legacy Manual Aluminum Radiator. For Racing Application The X...
Mishimoto 01-07 WRX/STi Manual Aluminum Radiator. For Racing Application The X LINE is recommended due to its higher...
Mishimoto 01-07 WRX/STi Manual Aluminum Radiator. For Racing Application: The X LINE is recommended due to its higher...
The bar has been raised. So, you probably already know that you want an intercooler with maximum cooling...
Meticulous Engineering Meets Unparalleled Craftsmanship. You probably already know that you want an intercooler with maximum cooling and...
OEM Splitter choking your TMIC? We can fix that. These have both been a long time in the...
OEM Splitter choking your TMIC? Fix that. Tired of popping your hood only to have that ugly OEM...
Features: CNC machined from billet aluminum 5/8” Bore I.D. designed to accept -8 O-ring boss fittings 2 piece...
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