Product: OBX Racing Sports Performance Exhaust Manifold Header Compatible With 01-06 BMW M3 E46 S54 Engine Race 1-3/4x3"
Brand: OBX Racing Sports
OBX Performance Exhaust Manifold Header 01-06 BMW M3 E46 S54 Engine Race 1-3/4x3". 
Mirror Polish 
4 O2 Bungs 
Port- 1.7” ID 
Primarily- 1.75” OD 
Outlet- 2.3” ID 
Piping- 3.5” OD OBX High performance racing headers are made out of pure SUS-304 stainless steel. Dyno tested at low end and top speed to increase horsepower. Precision mandrel-bend to enhance exhaust gas flow. These type headers are easy to install. Value-added bolt-on headers for any racing sport performance enthusiast. 
 
 Mirror Polish Finish 
 Made of 304 Grade Stainless Steel 
 
 Flange Thickness: 3/8" Runner Wall Thickness: 16 Gauge (1.5mm)
 OBX High performance racing headers are made out of pure SUS-304 stainless steel. 
Computer Numerical Control (CNC) machined flange for precision fitment 
Dual Tungsten Inert Gas (T.I.G.) welding for stronger hold 
 
 Increase Better/Smoother Exhaust Flow At Higher RPM To Generate More Power And Maximum Performance Out Of Your Engine. 
 Great Power Package to Unleash Hidden Ponies From Your Motor. 
 Get Up To 35% Better Exhaust Gas Flow By Replacing The Restrictive And Inefficient Factory Cast Log Manifolds With These Precision Built High Flow Headers. 
 
Value Added Direct Bolt On Set Up Without Any Modification
 
Dyno Tested Track Proven Systems to increase Torque And Horse Power.
 
Backed by OBX Limited Life Time Warranty. 
 
 Don't settle for the cheaper headers on eBay which are known to crack over time due to cheap welding, thin flanges, and very thin wall thickness. Also comes with a lifetime warranty from manufacturer defects. Dyno proven to increase horsepower.
Precision Computer CNC machined flanges with Dual-TIG welded construction for durability
High quality T-304 stainless steel, Dyno Tested Track Proven Systems To Increase Torque And Horse Power
Value Added Direct Bolt On/ Weld On Systems with accessories included as shown
Backed by Limited Lifetime warranty against manufacturer defects
OBX Genuine Products Design and Quality of OBX U.S.A.

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