Top 10 Best Exhaust Manifold For 6.7 Cummins Boost Power

The best exhaust manifold for 6.7 Cummins plays a crucial role in optimizing engine performance and exhaust flow. Engineered for durability and improved efficiency, these manifolds address common challenges like heat dissipation and backpressure, ensuring that your 6.7 Cummins operates at peak capability. Advances in high-grade materials and precision design contribute to minimizing exhaust restrictions and enhancing turbo response, which are vital for both daily driving and heavy-duty applications.

Understanding the intricate technology behind exhaust manifolds and their impact on power output, fuel economy, and emissions is essential for making a well-informed upgrade choice. Dive into this guide to explore innovative features and performance benefits that can transform your engine’s efficiency and longevity.

Best Exhaust Manifold for 6.7 Cummins: Top Picks for 2026

Image	Product	Buy
Top Picks- 1	Diesel Power Source Complete Manifold Kit: Cast Iron Exhaust Manifold Best for: Complete replacement kit	Check Price On Amazon
Top Picks- 2	A-Premium L6 6.7L Exhaust Manifold Kits W/Gaskets & Hardware Best for: Full gasket & hardware set	Check Price On Amazon
Top Picks- 3	Durable BD Diesel Exhaust Manifold Kit for Ram 3500/4500/5500 Cab&Chassis Best for: Heavy-duty chassis fit	Check Price On Amazon
Top Picks- 4	A-Premium [L6 6.7L] Exhaust Manifold Compatible with Ram Best for: Ram compatible manifold	Check Price On Amazon
Top Picks- 5	Mishimoto Exhaust Manifold Stud Kit, Compatible with Dodge Ram Cummins Best for: Manifold stud replacement	Check Price On Amazon

1. Diesel Power Source Complete Manifold Kit: Cast Iron Exhaust Manifold

Best for: Complete kit for professional installations.

This Diesel Power Source manifold kit includes a cast iron high-flow exhaust manifold paired with a multi-layer 4G gasket set, providing everything needed for a seamless professional installation. Its all-in-one design prevents compatibility issues and simplifies the replacement process for 2007-2018 6.7L Cummins engines.

Engineered specifically for 2007-2018 Dodge Ram 6.7L Cummins, it features OEM part numbers 5301441 and 68027070AB among others, ensuring exact fitment. The kit is painted for corrosion resistance and includes all components necessary to avoid sourcing multiple parts separately.

Pros

• High-flow cast iron manifold improves exhaust efficiency
• Multi-layer 4G gasket set ensures tight sealing
• Painted exterior prevents rust and corrosion
• Includes complete gasket kit for direct replacement

Cons

• Cast iron material adds noticeable additional weight compared to lighter alloys

This kit suits professionals or dedicated DIYers needing a comprehensive, direct-fit manifold replacement with verified compatibility on 6.7L Cummins engines from 2007 to 2018. It delivers reliable performance and reduces installation complexity.

2. A-Premium L6 6.7L Exhaust Manifold Kits W/Gaskets & Hardware

Best for: Full hardware kit with ceramic coating.

Designed with a ceramic-coated metallic gray finish, this A-Premium exhaust manifold kit offers enhanced heat resistance and reduced thermal transfer. It comes with a detailed hardware assortment including 6 manifold gaskets and 12 bolts, allowing for full system replacement on Dodge Ram 6.7L 2500 and 3500 models from 2007 to 2019.

The package includes studs, nuts, and a flange gasket, totaling 26.9 pounds with dimensions of 28 x 8 x 7 inches, accommodating bolt-on installation. Its part numbers like 68210184AB ensure precise engine compatibility, while the ceramic coating optimizes durability under high operating temperatures.

Pros

• Ceramic coating offers superior heat protection
• Complete gasket and hardware included for convenience
• Compatible across a wide range of Ram 2500 and 3500 years
• Metallic gray finish resists corrosion and wear

Cons

• Heavier weight may affect installation ease compared to other kits

Ideal for vehicle owners seeking a comprehensive manifold replacement with added thermal protection and a full set of new hardware. This kit streamlines installation on a broad span of Dodge Ram 6.7L trucks.

3. Durable BD Diesel Exhaust Manifold Kit for Ram 3500/4500/5500 Cab&Chassis

Best for: Replacement for heavy-duty cab and chassis trucks.

Offering robust durability, the BD Diesel manifold kit fits Dodge Ram 3500, 4500, and 5500 cab and chassis models from 2013 through 2018. It supports demanding heavy-duty applications with a substantive construction that handles high thermal and mechanical stresses.

Weighing 31 pounds, this main component-only kit provides a sturdy fit without additional hardware, requiring professional assembly. Its design focuses on cab and chassis compatibility, matching torque and sealing requirements for these heavier truck variants.

Pros

• Built for heavy-duty Ram truck cab and chassis models
• Robust construction supports high-stress environments
• Precision fit for 2013-2018 model years
• Provides durable main manifold component

Cons

• Does not include hardware or gaskets, requiring separate purchase

Best suited for fleet operators or mechanics working on heavy-duty Ram trucks who require a durable manifold component. Buyers must plan to procure compatible hardware separately.

4. A-Premium [L6 6.7L] Exhaust Manifold Compatible with Ram

Best for: Stainless steel manifold for ETN engine designs.

Made from standard-grade stainless steel, this A-Premium exhaust manifold fits naturally uncoated and offers durability against rust and thermal corrosion. It fits 2013-2018 Ram 3500, 4500, and 5500 trucks featuring the ETN engine design, supporting both cab and chassis configurations.

Weighing 22 pounds and packaged in a reinforced box, it replaces OEM parts 674562 and 68205983AA. The manifold features a round port shape with direct replacement fit, ensuring consistent exhaust flow and straightforward installation without heat shields included.

Pros

• Standard-grade stainless steel resists corrosion
• Direct replacement fit maintains original exhaust geometry
• Compact 22-pound weight eases installation
• Strong packaging reduces shipping damage risk

Cons

• No heat shield included, which could increase heat exposure in the engine bay

Perfect for owners of 6.7L Cummins ETN engine Ram trucks wanting a corrosion-resistant, OEM-equivalent manifold without extra shielding. Suitable for straightforward replacements where heat shield retrofit is planned separately.

5. Mishimoto Exhaust Manifold Stud Kit, Compatible with Dodge Ram Cummins

Best for: High-strength stud kit for turbo boost reliability.

This Mishimoto stud kit enhances exhaust manifold durability through chromium-infused steel construction, improving boost sealing and minimizing warpage in Dodge Ram Cummins 5.9L and 6.7L engines from 1994 to 2018. Its corrosion resistance ensures lasting performance under extreme heat.

Threaded on both ends with UNC thread style and a 1/4-20 thread size, the studs feature a 12-point design to resist bolt rounding during installation. Machined with hardness grade B7, the studs facilitate precise manifold alignment and easier bolt engagement in tight spaces.

Pros

• Chromium infusion enhances corrosion resistance
• 12-point design reduces bolt rounding risk
• Machined steel construction delivers high strength
• Improves turbo boost sealing consistency

Cons

• Stud kit only, requiring complementary manifold and gasket components

Aimed at diesel enthusiasts upgrading manifold fastening reliability for consistent turbo response. Recommended for anyone rebuilding or maintaining 5.9L or 6.7L Cummins manifolds seeking long-lasting stud durability.

6. Diesel Power Source T4i Cast Iron Exhaust Manifold for 2007-2018

Best for: Direct-fit cast iron manifold for 2007-2018 Rams.

The Diesel Power Source T4i cast iron exhaust manifold offers an advanced high-flow internal design tailored for 2007.5-2018 Dodge Ram 2500 and 3500 with 6.7L Cummins. It delivers OEM mounting precision compatible with manual or automatic transmissions, ensuring seamless integration.

It includes all mounting hardware and premium gaskets, eliminating the need for additional parts. The manifold’s painted exterior and exact bolt pattern preserve proper accessory clearances and heat shield installations during replacement.

Pros

• Precision OEM bolt pattern improves installation accuracy
• Painted cast iron exterior offers corrosion protection
• Includes complete mounting hardware and premium gaskets
• Compatible with manual and automatic transmissions

Cons

• Cast iron material weighs more than alternatives such as stainless steel

Ideal for drivers requiring a reliable, direct replacement manifold for 6.7L Cummins engines in late model Ram trucks. The complete hardware package benefits those looking for a straightforward, exact-fit solution.

7. BD Diesel 1041463 Exhaust Manifold Kit Dodge/Ram 1500/2500/3500 09-22 5.7L

Best for: Lightweight ductile iron manifold with spacers.

Constructed from high-silicon ductile iron, this BD Diesel manifold kit balances strength and thermal resistance for Dodge and Ram 1500 to 3500 trucks with 5.7L engines from 2009 to 2022. It includes longer fasteners with spacers for optimized mounting stability.

Weighing 14 pounds and measuring 27 x 6 x 6 inches, it encompasses all gaskets and fasteners required for installation. The painted finish enhances corrosion resistance while supporting OEM standards, excluding 2019+ DT body styles.

Pros

• High-silicon ductile iron offers excellent durability
• Includes extended fasteners and spacers for secure fit
• Lightweight at 14 pounds eases handling
• Complete gasket and fastener kit provided

Cons

• Not compatible with 2019 and newer DT body style trucks

Well suited for 2009-2018 Dodge/Ram 5.7L owners wanting a reliable replacement with enhanced mounting hardware. Excludes newest DT models, important for buyers to confirm vehicle year.

8. BD Diesel 1043007 Exhaust Manifold Kit Incl. Manifold/Cross Over Tube/EGR

Best for: Includes manifold, crossover tube, and EGR components.

BD Diesel’s manifold kit (model 1043007) arrives with an integrated exhaust manifold, crossover tube, and EGR parts bundled together, easing installation across multiple makes and models. Its vehicle-specific fitment can be confirmed with the seller, ensuring tailored compatibility.

At 24.8 pounds, the package presents comprehensive exhaust system components, with a part number 1043007 tying to high consumer ratings (4.8 out of 5 stars). It supports improved emissions control and exhaust flow with factory-grade construction.

Pros

• Includes EGR and crossover tube enhancing emissions management
• Comprehensive kit lowers need for additional components
• High customer satisfaction confirms reliability
• Moderate weight simplifies handling during install

Cons

• Requires vehicle-specific confirmation for proper fitment

Perfect for buyers needing the manifold alongside connected exhaust and EGR components, simplifying replacements in emissions-conscious environments. Confirm fitment with the vendor before purchase.

9. 12 PCS Heavy Duty Exhaust Manifold Studs and Bolts Set

Best for: Heavy duty manifold studs and bolts replacement set.

This 12-piece set of heavy-duty exhaust manifold studs and bolts restores secure fastenings on Dodge Ram 2500 and 3500 trucks with 5.9L and 6.7L Cummins engines spanning 2003 to 2019. The high-strength fasteners resist loosening from heat and vibration exposure.

Weighing just 1.43 pounds, the set replaces common part numbers like 3944593 and 5012557AA, ensuring compatibility with various Cummins manifolds. The machined finish adds corrosion resistance and the precision threading guarantees tight, leak-free installations.

Pros

• Strengthened bolts prevent manifold leaks from heat expansion
• Compatible with broad Cummins engine year range
• Machined finish offers corrosion resistance
• Lightweight set simplifies handling during replacement

Cons

• Fasteners only; manifold and gaskets sold separately

Recommended for owners needing to replace worn or broken fasteners without changing manifolds. Ideal for maintenance to prevent exhaust leaks affecting engine efficiency.

10. Dodge 2500/3500 Pick-Up Exhaust Manifold Kit by BD Diesel Performance

Best for: Extensive manifold kit for Ram 2500 and 3500.

BD Diesel Performance delivers a manifold kit tailored for 2007-2018 Ram 2500 and 3500 trucks equipped with 6.7L Cummins engines. It offers reliable replacement parts engineered to meet factory standards ensuring proper fit and finish.

The kit weighs 30.1 pounds and includes OEM-compatible manifolds and hardware. Its design supports direct bolt-on installation and withstands demanding diesel engine exhaust temperatures while maintaining optimal flow characteristics.

Pros

• OEM-compatible for precise fit
• Supports heavy-duty Ram trucks 07-18 model years
• Durable build handles high exhaust temperatures
• Complete kit enabling bolt-on installation

Cons

• Relatively heavy kit may complicate single-person handling

An appropriate choice for Ram 2500/3500 owners seeking a robust manifold replacement verified for model years 2007 through 2018. Perfect for those prioritizing OEM compatibility and durability.

How to Choose the Right Exhaust Manifold for 6.7 Cummins

Material quality and durability

Selecting the right material for a 6.7 Cummins exhaust manifold is crucial, with cast iron and stainless steel being the primary choices. Cast iron manifolds offer excellent heat tolerance and are highly resistant to warping under continuous high temperatures, making them a durable option for heavy-duty applications. Stainless steel manifolds provide superior corrosion resistance and maintain structural integrity even in wet or salty conditions, extending longevity in diverse environments.

A top-quality manifold will show thick, consistent material with smooth welds or casting, ensuring it withstands thermal stress without cracking or deforming. For drivers prioritizing long-term durability in rugged conditions, cast iron manifolds perform best, while stainless steel is ideal for those seeking corrosion resistance alongside heat management.

Power and performance enhancement

When evaluating power gains from exhaust manifolds on a 6.7 Cummins, focus on how the design improves exhaust flow and reduces backpressure, directly boosting horsepower and torque. Manifolds featuring smooth, well-aligned internal passages promote efficient gas evacuation, which increases combustion efficiency. Compatibility with turbochargers is essential, as a manifold must supply consistent, high-velocity exhaust pulses to feed turbo spooling without causing flow disruptions.

Manifolds crafted from materials that expand minimally under heat help maintain tight connections and flow efficiency. For maximum horsepower and optimal turbo responsiveness, select a stainless steel manifold with mandrel-bent tubing or a well-engineered cast iron piece designed specifically for turbocharged applications.

Design and fitment

Fitment and design affect not only installation ease but also engine performance and maintenance for the 6.7 Cummins. Direct bolt-on manifolds simplify installation and maintain factory sealing integrity but can vary in flange quality; look for thick, precision-cut flanges with quality gaskets to prevent leaks. Custom-fit manifolds accommodate engine bay limitations and aftermarket upgrades by maximizing clearance and optimizing flow paths.

Adequate clearance prevents contact with heat-sensitive components and allows space for proper heat shielding. For most users wanting a hassle-free upgrade, a direct bolt-on manifold with reinforced flanges offers reliability and leak-free performance; custom manifolds are better suited for those with modified setups requiring tailored space solutions.

Temperature management

Managing heat around a 6.7 Cummins engine is vital to protect components and maintain optimal operating temperatures. Look for manifolds that include integrated heat shielding or come with high-quality insulation wraps to reduce under-hood temperatures. Effective insulation lowers the risk of heat soak into the engine bay, preserving turbocharger efficiency and shielding nearby wiring or plastic parts.

Materials that maintain structural integrity while preventing heat transfer demonstrate superior thermal management. Buyers focused on preserving engine bay component longevity should choose manifolds with robust heat shielding or wrapped stainless steel designs to minimize heat exposure and improve overall temperature control.

Brand reputation and warranty

The reputation of the manufacturer and the warranty offered are key indicators of a reliable exhaust manifold purchase for the 6.7 Cummins. Trusted brands with consistent positive customer feedback highlight production quality and design accuracy. Warranty terms that cover a minimum of one year against warping or cracking show confidence in durability, while responsive customer support ensures assistance if issues arise.

Easy access to replacement parts and service manuals is essential for long-term maintenance. Prioritize manifolds from established manufacturers known for thorough quality control backed by comprehensive warranties to guarantee dependable performance and peace of mind.

Which Should You Choose?

• If you want an all-inclusive solution for a straightforward upgrade, choose a complete cast iron manifold kit that comes with all necessary gaskets and hardware for a hassle-free installation.
• If your vehicle is a heavy-duty Ram chassis cab, select a manifold kit designed specifically for cab and chassis configurations to ensure proper fit and durability.
• If you are focused on long-term durability and maintaining OEM fitment, opt for precision-engineered cast iron manifolds with OEM-style mounting dimensions and bolt patterns.
• If you’re aiming to prevent exhaust leaks and improve turbo response reliability, prioritize installing an upgraded manifold stud kit to reduce warpage and improve boost sealing.

Quick Best Exhaust Manifold For 6.7 Cummins Buying Checklist

• Material Type: Choose durable materials like cast iron or stainless steel that withstand high temperatures.
• Performance Boost: Look for designs that improve exhaust flow to increase horsepower and torque.
• Fit and Compatibility: Ensure the manifold fits the 6.7 Cummins engine design and installation space.
• Heat Management: Select models with good heat shielding to protect engine components.
• Brand Trust: Consider reputable manufacturers with strong warranties and good customer feedback.
• Maintenance Ease: Opt for exhaust manifolds that allow straightforward cleaning and servicing.

Frequently Asked Questions

What Material Is Best For An Exhaust Manifold On A 6.7 Cummins?

Stainless steel is often the best choice for a 6.7 Cummins exhaust manifold due to its excellent corrosion resistance and heat tolerance. It offers longevity and maintains performance under extreme engine temperatures, outperforming cast iron in terms of weight and durability.

How Does The Exhaust Manifold Affect Engine Performance In A 6.7 Cummins?

The exhaust manifold directly impacts engine performance by optimizing exhaust gas flow and reducing backpressure. For a 6.7 Cummins, a well-designed manifold enhances horsepower and torque by allowing exhaust gases to exit efficiently, supporting turbocharger function and overall engine responsiveness.

Can I Use A Universal Exhaust Manifold On My 6.7 Cummins Engine?

Using a universal exhaust manifold on a 6.7 Cummins is not ideal because proper fitment and flange design are critical. Custom or direct bolt-on manifolds ensure a better seal and exhaust flow compatibility, which are essential for optimal performance and avoiding leaks or damage.

Why Is Heat Management Important For 6.7 Cummins Exhaust Manifolds?

Heat management is crucial because the exhaust manifold operates under intense temperatures that can harm surrounding engine components. For the 6.7 Cummins, heat shielding or insulation helps maintain safe engine bay temperatures and prevents premature wear or failure of nearby parts.

What Warranty Features Should I Look For In A 6.7 Cummins Exhaust Manifold?

A strong warranty on a 6.7 Cummins exhaust manifold offers peace of mind by covering material defects and performance issues. Look for comprehensive support from brands known for reliability, as this reflects confidence in their product’s durability and quality.

Final Thouthgs

In summary, selecting the best exhaust manifold for 6.7 Cummins can significantly improve your engine’s power, efficiency, and durability. High-quality materials and precise fitment enhance performance while effective heat management protects vital components. Embracing these features ensures a dependable upgrade that maximizes your vehicle’s capability and longevity.