BD Exhaust Manifolds

BD Exhaust Manifolds

Stop The Cracks.
Lower EGTs.

CHOOSE APPLICATION →

  • OPTIMIZED AIRFLOW

    Engineered to support improved movement of air where it matters.

  • DIRECT FACTORY FITMENT

    Designed to install cleanly without unnecessary modifications.

  • PREMIUM HARDWARE INCLUDED

    Includes upgraded hardware components selected for strength and durability.
extreme-temp durability

extreme-temp durability

Cast from proprietary High-Silicon Ductile Iron to survive 1200°F+ heat cycles.
  • 2800°F Melt Temp: Superior metallurgy resists warping and heat-cycle fatigue.
  • Extra-Thick Walls: Increased structural integrity and heat-soak capacity.
  • Precision CNC Facing: Guarantees perfectly flat mating surfaces for a permanent seal.
optimized flow

optimized flow

Engineered using Computational Fluid Dynamics (CFD) to ensure maximum volumetric efficiency.
  • Pulse-Tuned Dividers: Eliminates exhaust interference for quicker turbo spool-up.
  • CNC Port-Matching: Removes restrictive steps between the cylinder head and manifold.
  • Balanced Breathing: Ensures equal exhaust pressure across all cylinders.
a better manifold

a better manifold

We don't just replicate OE parts—we fix the failures the manufacturer left behind.
  • Upgraded Hardware: Longer Grade 10.9 studs prevent bolt shearing and snapping.
  • Corrective Geometry: Relocated mounts and added securing points stop persistent leaks.
  • Application Specific: Custom-engineered solutions for Cummins, Duramax, and Powerstroke flaws.

Choose Your Application

Dodge

Dodge Manifolds

Designed for unmatched durability and performance, our manifolds are crafted from high-silicon ductile iron to withstand extreme conditions. With features like fully divided pulse technology and precision slip joints, they ensure optimal airflow and reduced thermal fatigue, leading to enhanced turbo spool and power. Ideal for those seeking to elevate their Dodge’s performance, our exhaust manifolds are the key to a robust and efficient turbocharged engine.
Cummins 5.9L 1994-1998 Cummins 5.9L 1998-2002 Cummins 5.9L 2003-2004 Cummins 5.9L 2004.5-2007 Cummins 6.7L 2007.5-2024 HEMI 5.7L / 6.4L 2009-2022
Ford

Ford Manifolds

Tailored for Power Stroke engines, our manifolds are made from thick-walled hi-silicon ductile casting to prevent cracking and ensure long-lasting durability. Designed for easy installation and enhanced engine efficiency, they offer improved thermal durability and are fully EGR compatible. Whether upgrading for reliability or preparing for enhanced engine work, our Ford exhaust manifolds provide peace of mind and a significant performance improvement.
Power Stroke 6.0L 2003-2007 Power Stroke 6.4L 2008-2010 EcoBoost 3.5L 2011-2020 Power Stroke 6.2L 2010-2022 Power Stroke 6.7L 2011-2019
Chevy/GM

Chevy/GM Manifolds

BD Diesel Chevy/GM exhaust manifolds fit popular 2001-2016 Duramax and 2002-2013 Gasoline V8 applications. Designed to replace restrictive stock manifolds, they improve exhaust flow, reduce backpressure and EGTs, and hold up better under towing, heat, and heavy load. For Chevy/GM owners who want stronger cast construction, better turbo response, and a long-term fix over factory manifolds, BD is the upgrade to look at.
Duramax 6.6L 2001-2016 Gasoline V8 2002-2013

What are the benefits of upgrading to a BD Diesel exhaust manifold?

Upgrading to a BD Diesel exhaust manifold improves durability, exhaust flow, and reliability compared to factory manifolds. BD manifolds are built thicker and stronger to resist cracking and warping, while also improving exhaust efficiency for better engine performance and longevity.

Why do factory exhaust manifolds fail on diesel trucks?

Factory manifolds often fail due to repeated heat cycles, which cause expansion and contraction. Over time, this leads to cracking, warping, or broken bolts. BD Diesel manifolds are engineered to handle extreme temperatures and reduce stress-related failures.

Do BD Diesel exhaust manifolds increase horsepower?

Yes, BD Diesel exhaust manifolds can increase horsepower by improving exhaust flow and reducing restrictions. While gains vary by application, improved airflow helps the engine operate more efficiently, especially under load or towing conditions.

Are BD Diesel exhaust manifolds better than stock?

BD Diesel manifolds are designed to outperform stock manifolds in strength, durability, and flow. With thicker cast construction and optimized design, they are a long-term upgrade over factory components that are prone to failure.

Do BD Diesel manifolds help with towing performance?

Yes, improved exhaust flow helps reduce backpressure and supports better engine efficiency under heavy loads. This can lead to improved towing performance, more consistent power delivery, and lower exhaust gas temperatures.

What materials are BD Diesel exhaust manifolds made from?

BD Diesel exhaust manifolds are constructed from a high-silicon ductile iron alloy. This material offers superior strength, thermal stability, and resistance to cracking compared to standard cast iron, making it ideal for handling extreme heat and repeated thermal cycling in diesel applications.

Are BD Diesel manifolds direct bolt-on replacements?

Yes, BD Diesel exhaust manifolds are designed as direct bolt-on replacements for factory manifolds. They are engineered to fit OEM mounting locations, making installation straightforward for most applications.

Do BD Diesel exhaust manifolds come with installation hardware?

Most BD Diesel manifold kits include necessary hardware such as gaskets and fasteners. Some kits may also include upgraded components designed to improve reliability compared to factory hardware.

Will upgrading my exhaust manifold reduce exhaust leaks?

Yes, upgrading to a stronger and more durable manifold can help eliminate common causes of exhaust leaks such as warped surfaces or cracked manifolds. Proper installation with quality hardware further ensures a tight seal.

What vehicles are BD Diesel exhaust manifolds available for?

BD Diesel offers exhaust manifolds for a wide range of applications, including popular diesel platforms like Cummins, Duramax, and Power Stroke engines. Availability varies by model year and engine type.