BD Diesel C&C Exhaust Manifold

2019–2024 Ram 3500 6.7L Diesel

Part #: 1045970

Overview

The BD Diesel C&C Exhaust Manifold is engineered specifically for the 2019–2024 Ram 3500 equipped with the 6.7L Cummins inline-6 diesel engine. Known for its durability challenges, the factory cast-iron exhaust manifolds on these engines are prone to cracking due to thermal stress and expansion. BD Diesel addresses this common issue with a robust, thick-wall casting combined with a slip-joint center section that allows natural expansion and contraction, significantly reducing the risk of cracks and extending the manifold’s service life.

This manifold is an ideal upgrade for Ram 3500 owners seeking enhanced reliability and longevity, whether their truck is stock or modified. It also improves exhaust flow dynamics through its divided Pulse Manifold design, which harnesses the engine’s natural exhaust pulses to optimize flow, resulting in smoother engine operation and improved drivability. Fully emissions-compliant and ready for easy monitoring with a pre-drilled EGT probe port, this manifold offers a practical and durable solution for Cummins diesel enthusiasts.

Key Features

Designed to solve common exhaust manifold issues while enhancing performance and reliability, the BD Diesel C&C Exhaust Manifold includes the following key features:

• Thick-wall cast-iron construction for superior strength and crack resistance
• Slip-joint center section to accommodate thermal expansion and contraction
• Divided Pulse Manifold design that optimizes exhaust flow and engine pulse tuning
• Pre-drilled EGT probe port for easy exhaust gas temperature monitoring
• Full emissions compliance for legal street use
• Compatible with both stock and modified Ram 3500 6.7L Cummins engines
• Available as a standalone manifold or as a complete installation kit with all necessary hardware
• Improves drivability by smoothing exhaust pulses and reducing engine stress

Construction & Design

The BD Diesel C&C Exhaust Manifold is crafted from a thick-wall cast-iron material that significantly enhances durability compared to factory manifolds. The slip-joint center section is a critical design feature that allows the manifold to expand and contract naturally with engine heat cycles, preventing the stress fractures commonly seen in one-piece cast manifolds. This thoughtful engineering extends the life of the manifold and reduces the likelihood of costly repairs.

The divided Pulse Manifold design further refines exhaust flow by separating exhaust pulses, which reduces turbulence and backpressure. This design not only protects the manifold but also contributes to smoother engine operation and improved throttle response.

Installation & Fitment

The BD Diesel C&C Exhaust Manifold is a direct fit replacement for the 2019–2024 Ram 3500 equipped with the 6.7L Cummins diesel engine. Installation is straightforward and requires no modifications to the engine or exhaust system. For convenience, BD Diesel offers a complete installation kit (part number 1046070) that includes new bolts, spacers, and gaskets to ensure a proper, leak-free fit and simplify the upgrade process.

What's Included

• BD Diesel C&C Exhaust Manifold (part #1045970)
• Optional installation kit (PN: 1046070) includes:
• New bolts
• Spacers
• Gaskets

Ideal For

This exhaust manifold is perfect for Ram 3500 owners who want to eliminate the common cracking issues associated with factory manifolds while maintaining emissions compliance. It suits both daily drivers and performance enthusiasts who have modified their trucks and require a more durable exhaust solution. Whether you are looking to improve reliability, reduce maintenance costs, or enhance engine smoothness, the BD Diesel C&C Exhaust Manifold is a smart upgrade choice.

Emissions Note

This manifold is fully emissions-compliant, ensuring it meets regulatory standards for street use without compromising performance or durability.

BD Diesel Performance designs and manufactures diesel performance parts aimed at stronger power delivery, improved reliability, and heavy-duty capability. Their lineup spans turbo and fueling upgrades, manifolds, intercoolers, and other supporting components—built for Cummins, Power Stroke, and Duramax owners who want more torque for towing, work, or competition.