4PC Performance Exhaust Manifold Headers for BMW E46 E39 Z3 2.5L 2.8L 3.0L L6

FITMENT:
MAKE/MODEL: BMW E46 3 Series
YEARS: 1998, 1999, 2000
TRIM: 2.5L/2.8L/3.0L Engines

MAKE/MODEL: BMW E39 5 Series
YEARS: 1997, 1998, 1999, 2000
TRIM: 2.5L/2.8L/3.0L Engines

MAKE/MODEL: BMW Z3
YEARS: 1996, 1997, 1998, 1999, 2000, 2001, 2002
TRIM: 2.5L/2.8L/3.0L Engines

• SUS201 Stainless Steel Construction.
• TIG welded CNC machined flanges.
  
• Mandrel bent.
• Polished surface.
• 3/8" flanges
• Direct bolt on installation.
• Designed to fit existing OEM piping.
• Product is the same as in the pictures. The pictures are taken by us personally.
• Two o2 sensor locations with blanking plugs.
  
• Increases horsepower and toque 5-10hp depending on current engine setup.
• This exhaust is designed to increase the exhaust flow and let you engine breath better.
  
• These can be used a both shorty and long tube headers
• Product does not come with installation instructions, please refer to a shop/factory manual for installation.

Q: Does this come with the an installation kit to install it?
Yes, This kit includes gaskets, nuts and bolts.

Q: What is difference between a Exhaust Header and OEM Exhaust Manifold?
Headers typically refer to an aftermarket exhaust manifold. They are designed with performance in mind. Designed to increase both HP and Torque. They feature larger diameter piping and better bends to give better air flow through the exhaust. Headers are also made with lighter steel where as the original manifolds are typically iron. Headers give each cylinder its own pipe which prevents unwanted backpressure.

Q: Is this exhaust street legal in California or other states with strict emissions laws?
These exhaust headers are designed for off-road use only and is not street legal in states with strict emissions regulations such as California. Please check local laws before installing if you're planning to use it on public roads.

Q: Will this exhaust fit my BMW?
Yes, But only certain years and engines. This is a direct bolt on replacement for the original OEM exhaust. It fits both the manual and automatic transmissions for the BMW 2.5L/2.8L/3.0L Engines. It fits the 3 and 5 series years 1998 through 2000. Models after this year use a different length header and the clocking on the flange is different. 

Q: Will this make my car louder?
Headers dont effect the loudness of the vehicle too much. It will create a deeper tone. Most of the sound of the exhaust is controlled by the muffler, resonator and catalytic converter.

Q: What is the difference between shorty, mid length and long tube headers?
This refers to the length of the piping on the header. Shorty headers typically provide better low end torque and are easier to install. Long tube headers give more high RPM HP gains but can be harder to install and can effect emissions depending on your state. Mid length headers are an in-between.