Top 10 Best 6.7 Cummins Exhaust Manifold for Peak Performance

The best 6.7 Cummins exhaust manifold plays a crucial role in optimizing engine performance and longevity. Engineered for heavy-duty diesel applications, these manifolds influence exhaust flow, thermal management, and overall power delivery. Advanced materials and precision manufacturing techniques ensure durability under high temperatures and pressures, enhancing fuel efficiency and reducing emissions.

Choosing the right exhaust manifold involves understanding factors like compatibility, heat resistance, and design innovation, which directly impact turbocharging and exhaust scavenging. Diesel enthusiasts and professionals alike prioritize these key aspects when selecting components to maximize their 6.7 Cummins’ capabilities.

As we explore top options, insights into build quality, airflow improvements, and installation considerations will guide you to the ideal exhaust manifold solution. Continue reading to uncover comprehensive details that will inform your next upgrade decision.

Best 6.7 Cummins Exhaust Manifold: Top Picks for 2026

Image	Product	Buy
Top Picks- 1	Screamer Turbo Manifold Package for RAM 6.7L Cummins 2013-2018 by Best for: Performance enthusiasts	Check Price On Amazon
Top Picks- 2	A-Premium L6 6.7L Exhaust Manifold Kits W/Gaskets & Hardware Best for: Complete replacement kits	Check Price On Amazon
Top Picks- 3	Diesel Power Source Complete Manifold Kit: Cast Iron Exhaust Manifold Best for: Durable cast iron options	Check Price On Amazon
Top Picks- 4	Durable BD Diesel Exhaust Manifold Kit for Ram 3500/4500/5500 Cab&Chassis Best for: Heavy-duty truck owners	Check Price On Amazon
Top Picks- 5	A-Premium [L6 6.7L] Exhaust Manifold Compatible with Ram Best for: Reliable Ram compatibility	Check Price On Amazon

1. Screamer Turbo Manifold Package for RAM 6.7L Cummins 2013-2018 by

Best for: High performance upgrades support.

High silicon ductile iron casting on this 6.7L Cummins manifold offers extreme heat resistance, enabling sustained high output for engines modified up to 690HP. The enhanced porting design improves power handling, allowing better turbo efficiency with the Holset HE351 Turbo.

Pre-drilled for pyrometer probe installation and CARB Executive Order No. D-553-5 compliant, it integrates seamlessly with performance monitoring setups. This package omits accessory kits like gaskets and bolts, which are sold separately, and weighs 80 pounds, reflecting its heavy-duty build optimized for 2013-2018 RAM models.

Pros

• High silicon ductile iron withstands extreme heat
• Pre-drilled for pyrometer installation facilitates precise tuning
• Supports engine setups up to 690HP for power gains
• Enhanced porting design increases flow capacity

Cons

• Accessory kits including gaskets and bolts are not included, requiring separate purchase

Ideal for performance enthusiasts upgrading 2013-2018 RAM 6.7L Cummins engines looking for a durable manifold that supports high horsepower builds. This manifold works best in setups demanding robust heat resistance and improved airflow.

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

Best for: Comprehensive kit with ceramic coating.

This exhaust manifold kit for 6.7L Cummins engines comes with ceramic coating that reduces heat transfer, improving durability and longevity in heavy-use conditions. Its compatible fit spans multiple RAM 2500 and 3500 models from 2007 to 2019, enabling versatile application across several years.

The kit includes 1 exhaust manifold, 6 manifold gaskets, 1 flange gasket, 2 cooler gaskets, 4 studs, 4 nuts, and 12 bolts for an extensive installation package. Weighing 26.9 pounds, its metallic gray finish offers corrosion resistance while the included heat shielding improves thermal management.

Pros

• Ceramic coating minimizes heat soak and corrosion
• Complete gasket and hardware kit simplifies installation
• Fits a broad range of 2007-2019 RAM models
• Metallic gray finish enhances durability and appearance

Cons

• Heat shield is separate, requiring additional components for full thermal protection

Perfect for truck owners needing a reliable replacement manifold with hardware included for RAM 2500/3500 models spanning over a decade. Suitable for those prioritizing thermal protection and a ready-to-install setup.

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

Best for: All-in-one professional installation kit.

A full manifold solution that combines a high-flow cast iron exhaust manifold with a multilayer 4G gasket kit, this package trims down installation complexity by eliminating multiple components from different suppliers. It’s specifically engineered for 2007-2018 6.7L Cummins engines to ensure precise compatibility.

The kit aligns perfectly with OEM specifications, allowing a direct bolt-on fit for RAM 6.7L models, streamlining the replacement process. Everything required for professional installation arrives in one shipment, reducing downtime and the risk of mismatched parts.

Pros

• Includes multilayer 4G gasket kit for reliable sealing
• High-flow cast iron manifold increases exhaust efficiency
• One-package solution reduces installation hassle
• Specifically engineered for precise 2007-2018 RAM fitment

Cons

• Painted exterior may require touch-up in case of surface damage during installation

This manifold kit suits professional mechanics or DIYers seeking a comprehensive solution for 6.7L Cummins repairs or upgrades. Its completeness makes it ideal for those wanting to avoid compatibility headaches during installation.

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

Best for: Heavy duty cab and chassis compatibility.

Designed for 2013-2018 RAM 3500, 4500, and 5500 Cab & Chassis models, this exhaust manifold kit weighs 31 pounds to deliver a sturdy casting fit for heavy-duty truck applications. It addresses the needs of commercial and fleet vehicles requiring durability under demanding conditions.

The kit includes the main exhaust manifold component sized to handle larger truck engine configurations. With a part number 1046068, it sits well within the BD Diesel Performance lineup offering reliable OEM-grade replacement assurance.

Pros

• Fits heavy-duty RAM cab & chassis models
• Robust construction provides long-term durability
• Designed specifically for 2013-2018 6.7L Cummins engines
• Weighs 31 pounds indicating solid build quality

Cons

• Excludes additional gaskets and installation hardware requiring separate purchases

Ideal for commercial truck operators with RAM 3500-5500 cab and chassis models who demand reliable, OEM-grade exhaust manifold replacements. Excellent for fleet maintenance minimizing downtime with a precise fit.

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

Best for: Stainless steel direct replacement option.

Crafted from stainless steel, this exhaust manifold offers natural corrosion resistance for 2013-2018 RAM 6.7L Cummins engines across 3500, 4500, and 5500 series, including cab & chassis configurations. Its round port shape is engineered as a direct OEM replacement, facilitating straightforward installation.

Weighing 22 pounds, it arrives packaged in a reinforced box to ensure protection during shipping. The absence of a heat shield implies dependence on the vehicle’s existing thermal management. Part number 674562 appropriately matches OEM references for seamless component integration.

Pros

• Stainless steel resists rust and extends service life
• Direct replacement fit cuts down installation time
• Compatible with multiple RAM heavy-duty models
• Secure packaging reduces damage risk during transit

Cons

• No included heat shield could lead to higher under-hood temperatures

Recommended for RAM owners who prefer stainless steel construction for longevity and who want a hassle-free swap without modifying hardware. Suitable for those retaining factory heat shields or using aftermarket thermal components.

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

Best for: Ductile iron with complete hardware kit.

This BD Diesel 1041463 manifold kit features high-silicon ductile iron construction providing superior resistance to heat and cracking for 5.7L to 6.7L Dodge and RAM models from 2009-2022. The kit includes longer fasteners and spacers improving fitment precision during installation.

Weighing only 14 pounds, the manifold kit comes painted for corrosion protection and includes all gaskets and fasteners required, streamlining the replacement process. Its product dimensions (27 x 6 x 6 inches) allow it to fit snugly within engine bays of compatible trucks.

Pros

• High-silicon ductile iron minimizes thermal fatigue
• Comes with longer fasteners and spacers for better fit
• Painted finish aids in corrosion prevention
• Includes full gasket and fastener set for turnkey installation

Cons

• Does not fit 2019 and newer DT body style models, limiting compatibility

Ideal for RAM and Dodge truck owners maintaining 2009-2018 diesel engines aiming for durable, full-package manifold replacement. Avoid this if running late model DT body style to ensure proper fit.

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

Best for: Stud kit for enhanced turbo sealing.

Machined chromium-infused steel studs in this kit are engineered to resist corrosion, high heat, and prevent bolt rounding for 5.9L and 6.7L Dodge Ram Cummins engines manufactured between 1994 and 2018. This improves manifold sealing consistency and decreases turbo lag caused by exhaust leaks.

Featuring a 12-point design, the stud kit simplifies alignment and bolt installation even in tight engine bays. The double-ended studs have UNC threading on both sides, rated at grade B7 hardness, offering durability in demanding under-hood environments.

Pros

• Chromium infusion enhances corrosion and heat resistance
• 12-point design improves torque application accuracy
• Double-ended, threaded studs aid installation in confined spaces
• Universal fit for 1994-2018 5.9L and 6.7L engines

Cons

• Only includes studs and bolts, requiring separate purchase of manifold and gaskets

Best suited for mechanics or DIYers aiming to replace worn manifold studs to improve turbo responsiveness and seal integrity on older Dodge Ram Cummins engines. Supports maintaining reliability without complete manifold replacement.

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

Best for: Precision OEM-fit cast iron manifold.

Precisely engineered for 2007.5 to 2018 6.7L Cummins engines, this cast iron manifold matches exact OEM mounting dimensions and bolt patterns. It supports both manual and automatic transmissions, ensuring compatibility with various drivetrain setups.

The advanced high-flow internal design enhances exhaust efficiency while maintaining proper clearances for accessories and wiring harnesses. This manifold includes all necessary mounting hardware and premium gaskets, ensuring a comprehensive installation kit ready to bolt on.

Pros

• Exact OEM mounting dimensions enable seamless replacement
• High-flow internal design improves exhaust gas evacuation
• Includes mounting hardware and premium gaskets
• Compatible with manual and automatic transmissions

Cons

• Painted exterior may be prone to chipping under rough handling

Ideal for RAM owners seeking a manifold with precise OEM fitment and comprehensive hardware for 2007-2018 Cummins engines. Suitable for those desiring performance gains while maintaining factory geometry.

9. APDTY 158060 Ceramic Coated Exhaust Manifold Kit 6.7L Cummins Turbo

Best for: Ceramic coated full kit with gaskets.

This brand-new ceramic coated exhaust manifold kit delivers improved heat resistance and corrosion protection for the 6.7L Cummins Turbo engines. It includes all necessary gaskets and hardware, streamlining a full manifold replacement with minimal additional purchases.

The kit features one ceramic-coated manifold, one manifold gasket, one flange gasket, one EGR cooler gasket, along with four bolts and four nuts. Measuring roughly 28.87 by 12.62 by 7.87 inches and weighing 25.5 pounds, it supports reliable fitment for specific vehicles per compatibility charts.

Pros

• Ceramic coating enhances thermal efficiency and corrosion resistance
• Complete gasket and hardware set for ease of installation
• Includes EGR cooler gasket for emissions system integrity
• Kit sized for straightforward vehicle-specific fitment

Cons

• Requires customers to verify vehicle compatibility before purchase to ensure proper fit

Perfect for owners replacing worn or damaged manifolds on 6.7L Cummins turbos seeking a coated, ready-to-install kit that protects against high temperatures and corrosion. Best used with thorough vehicle compatibility checks.

10. EXHAUST MANIFOLD – DODGE

Best for: OEM replacement with solid weight and size.

Weighing 26.9 pounds with dimensions of 28 by 9 by 8 inches, this BD Diesel exhaust manifold serves as an OEM-quality replacement compatible with standard RAM Cummins setups. Its robust structure addresses durability needs for consistent engine performance.

With the manufacturer part number 1045965, the manifold balances weight and compact size to fit engine bays without extensive modification. It does not include hardware or gaskets, focusing solely on the core manifold component for use in established maintenance or rebuild projects.

Pros

• Robust OEM-quality construction supports longevity
• Compact dimensions facilitate straightforward installation
• Suits multiple Cummins RAM models requiring direct replacement
• Moderate weight reflects durable casting materials

Cons

• Lacks hardware and gasket inclusion, requiring extra purchases to complete installation

Designed for professional technicians or experienced users replacing manifolds on RAM Cummins engines who already have or plan to source separate necessary installation components. Suitable for those focused on core part quality.

How to Choose the Right Best 6.7 Cummins Exhaust Manifold

Material quality and durability

Choosing the best exhaust manifold for the 6.7 Cummins begins with assessing the material. Cast iron manifolds offer exceptional durability and excellent heat retention, forming a solid choice for users prioritizing long-term toughness under intense exhaust temperatures. Stainless steel varieties excel in corrosion resistance and lighter weight, which benefits overall component longevity and reduces rust-related wear.

Avoid thin or low-grade metals that warp or crack quickly. For sustained reliability meant to endure high thermal cycling without degradation, a thick, high-quality cast iron manifold is the prime option, particularly for heavy-duty applications where durability outweighs weight concerns.

Design and fitment

Accurate fitment is critical when selecting a 6.7 Cummins exhaust manifold. The manifold must precisely align with the specific engine model and production year to ensure perfect port matching and avoid leaks. Gasket sealing quality depends heavily on this alignment; poor fitment causes exhaust leaks, leading to performance issues and noise.

Consider the manifold’s shape to verify it fits efficiently within the engine bay, allowing for proper clearance and straightforward installation. The best choice is a manifold explicitly engineered for your engine’s generation, featuring flawless port matching and compact dimensions that facilitate clean, leak-free installation with minimal adjustments.

Performance and exhaust flow

Performance gains hinge on the manifold’s ability to optimize exhaust flow and support turbocharger function. Look for designs that minimize backpressure and promote efficient scavenging of exhaust gases; these improve turbo spool speed and overall engine breathing. Smooth, even flow paths with correctly sized runners enhance horsepower and torque generation compared to restrictive or poorly designed manifolds.

Manifolds that offer a balance of equal-length runners and low resistance support stronger boost response and cleaner power delivery. Select a manifold with proven flow dynamics that boost turbo efficiency and maximize engine output without introducing excessive backpressure.

Heat management features

Managing heat from the manifold is essential to prevent damage to other engine components and reduce underhood temperatures. Effective heat management includes integrated shielding or the option for insulating wraps that lower heat radiation. Coatings on manifolds should withstand extreme thermal cycles without peeling or cracking, maintaining their protective properties over time.

Look for exhaust manifolds with durable ceramic or thermal barrier coatings designed to retain heat within the exhaust gases while shielding the engine bay. A well-sealed, coated manifold contributes to consistent performance and protects sensitive parts by keeping temperatures controlled.

Brand reputation and warranty

Reputation and warranty reflect confidence in the manifold’s quality and the manufacturer’s support. Research brands with a proven track record of producing reliable Cummins exhaust components and positive customer feedback highlighting longevity and performance consistency. A comprehensive warranty covering defects and premature failures for a substantial term offers peace of mind and demonstrates product durability.

Opt for manufacturers that provide accessible customer service and readily available replacement parts to ensure hassle-free maintenance. Prioritize products from established names with strong warranties and responsive support to secure your investment’s value and reliability.

Which Should You Choose?

• If you need a legal, easy-to-install option with provisions for monitoring, choose a turbo manifold package pre-drilled for pyrometer probe installation and compliant with emissions standards.
• If you want a comprehensive kit that includes all necessary gaskets and hardware for a professional installation, opt for a complete cast iron manifold kit that provides every component in one package.
• If you drive a heavy-duty cab and chassis truck requiring a durable replacement, select an exhaust manifold kit designed specifically for cab and chassis models to ensure proper fitment and performance.
• If your priority is preventing leaks and maintaining consistent boost response, look for a stud kit engineered to enhance sealing and reduce manifold warpage risk.

Quick Best 6.7 Cummins Exhaust Manifold Buying Checklist

• Material Type: Choose manifolds made from durable materials like stainless steel or cast iron for longevity.
• Compatibility: Verify model and year fitment to ensure proper installation.
• Performance Impact: Select manifolds designed to optimize exhaust flow and engine power.
• Heat Protection: Opt for features that minimize heat transfer to the engine bay.
• Ease of Installation: Consider manifolds that come with clear instructions and necessary hardware.
• Warranty and Support: Check for good warranty terms and reliable customer service.

Frequently Asked Questions

What Materials Are Best For A 6.7 Cummins Exhaust Manifold?

The best materials for a 6.7 Cummins exhaust manifold are cast iron and stainless steel, as they withstand high temperatures and resist corrosion. Cast iron offers durability and heat retention, while stainless steel provides superior resistance to rust and cracking under extreme conditions.

How Does The Exhaust Manifold Affect Engine Performance?

The exhaust manifold impacts engine performance by directing exhaust gases efficiently, reducing backpressure and improving turbocharger response. A well-designed manifold enhances horsepower and torque by optimizing exhaust flow and scavenging effects in the engine.

Is Heat Management Important For Exhaust Manifolds On A 6.7 Cummins?

Yes, heat management is crucial because exhaust manifolds experience intense heat that can affect engine components. Heat shielding and coatings help prevent underhood heat soak, protecting sensitive parts and maintaining overall engine performance.

Can I Install A 6.7 Cummins Exhaust Manifold Myself?

Installation can be done by experienced DIYers if the manifold is compatible and includes proper instructions and hardware. However, precision in fitment and torque specifications is important, so using professional services may be preferable for first-timers.

Why Is Brand Reputation Important When Choosing An Exhaust Manifold?

Brand reputation matters because reputable manufacturers tend to produce reliable, well-tested manifolds with better build quality and warranty coverage. They often offer superior support and replacement parts, ensuring long-term customer satisfaction.

Final Thouthgs

In summary, selecting the best 6.7 Cummins exhaust manifold enhances your engine’s efficiency and durability through superior materials, precise fitment, and optimized exhaust flow. These manifolds offer essential heat management and reliable performance, making them invaluable upgrades for diesel enthusiasts. Investing in quality components ensures your Cummins engine runs strong and smooth well into the future.