Equal Length Headers Exhaust Manifolds for BMW E36 325i 323i 328i M3 Z3 M50 M52 (1991-1998)
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Stainless Performance Equal-Length Header Manifold - BMW E36 & Z3 Inline-6
The E36 generation wasn't just another BMW—it was the car that proved the Ultimate Driving Machine could be accessible without compromising the driving dynamics that made the marque legendary. From the balanced chassis to the silky-smooth inline-6 that loves to rev, your E36 or Z3 was engineered for driver engagement. But those factory cast-iron exhaust manifolds? They're strangling the performance your BMW was born to deliver. Our equal-length stainless steel headers unleash that potential.
Engineered for the Inline-Six You Love
Your M50, M52, or S52 engine deserves to breathe freely. Our equal-length 3-to-1 header design replaces restrictive factory manifolds with precision-engineered stainless steel runners that balance exhaust pulses and dramatically improve scavenging efficiency. The result? Approximately 5-10 horsepower and torque gains, sharper throttle response, and improved high-RPM performance that reminds you why BMW's inline-six is considered one of the finest engines ever built. Plus, you'll enjoy a deeper, more aggressive exhaust note that perfectly matches your BMW's sporting character.
Built to BMW Standards
Constructed from high-quality stainless steel with CNC-machined flanges for precise fitment and leak-free sealing, these headers feature TIG and MIG welded joints for strength and long-term reliability. Dual O₂ sensor bungs come pre-installed, and the polished finish adds a professional touch to your engine bay and undercarriage. This is performance hardware that matches the quality you expect from your BMW.
Key Features
- Equal-Length Design: 3-to-1 configuration improves exhaust scavenging and gas flow efficiency
- Proven Power Gains: Approximately 5-10 horsepower and torque increase under ideal conditions
- Premium Construction: High-quality stainless steel resists corrosion and delivers lasting durability
- Precision Fitment: CNC-machined flanges ensure leak-free sealing
- Professional Welds: TIG and MIG welded joints provide strength and reliability
- Enhanced Sound: Deeper, more aggressive exhaust tone that highlights your inline-6's character
- Complete Setup: Dual O₂ sensor bungs pre-installed for plug-and-play compatibility
- Polished Finish: Enhances under-hood and under-car appearance
Perfect Fitment
BMW E36 (1991 International / 1992-1998 US, LHD Models):
- 2.5L Inline-6 (M50 / M52) - 323i, 325i
- 2.8L Inline-6 (M52) - 328i
- 3.0L / 3.2L Inline-6 (S50 / S52) - M3
BMW Z3 (1997-1998, LHD Models):
- 2.5L / 2.8L / 3.2L Inline-6 (M52 / S52)
Technical Specifications
- Primary piping diameter: 1 3/8"
- Inlet size: 1 1/4" x 1 3/4"
- Outlet size: 2.0" ID
- O₂ sensor ports: 2
Installation Notes
Direct replacement for factory exhaust manifolds. Professional installation is recommended. Installation instructions are not included—refer to a factory service manual or qualified exhaust shop for proper installation procedures.
Ready to unlock your BMW's true performance potential? Experience the power, sound, and throttle response that perfectly complement the performance heritage of the E36 and Z3 inline-6 platforms. Order your equal-length stainless headers today.
Common Questions
Which BMW E36 and Z3 models do these equal-length headers fit?
These headers fit 1991-1998 BMW E36 3 Series models (323i, 325i, 328i, and M3) and BMW Z3 roadsters equipped with the 2.5L, 2.8L, 3.0L, or 3.2L inline-6 engines (M50, M52, S50, and S52).
Will these headers fit a 4-cylinder BMW E36 or 1.9L Z3?
These manifolds are built specifically for 6-cylinder M50, M52, S50, and S52 inline-6 engines.
What are the piping dimensions and O2 sensor specs?
They feature a 3-to-1 equal-length runner layout with 1-3/8" primary piping, 1-1/4" x 1-3/4" inlets, a 2.0" ID outlet, CNC-machined flanges, and 2 pre-installed O2 sensor ports.
What kind of performance gains can I expect?
The equal-length 3-to-1 stainless steel runners balance exhaust pulses and improve scavenging over the restrictive factory cast-iron manifolds, delivering approximately 5-10 horsepower and torque gains along with sharper throttle response.
Are installation instructions included in the box?
Installation instructions are not included. These headers are a direct bolt-on replacement for the factory exhaust manifolds, and referring to a factory service manual or having a qualified exhaust shop perform the install is recommended.
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Warranty
Warranty
All products are backed by our Limited Lifetime Warranty. We stand by our quality. [See terms]

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$274.99