BD Diesel 1046065 Exhaust Manifold Kit - 2007.5-2018 Ram 6.7L Cummins

The BD Diesel 1046065 exhaust manifold kit is a direct-fit, fully divided pulse manifold for 2007.5-2018 Ram 2500 and 3500 6.7L Cummins pickup trucks. Built from high-silicon ductile iron with precision slip joints, this kit is engineered to handle the extreme temperature cycling of DPF regeneration events that crack OEM cast iron manifolds over time. The BD 1046065 is a complete bolt-on replacement for the factory manifold on 2007.5-2018 Ram 6.7L Cummins pickups, including all gaskets, grade 10.9 bolts, and spacers - no additional hardware sourcing required. This is a pickup-only fitment - cab and chassis applications require a separate manifold.

Why the BD 1046065 Outlasts the Factory Manifold

The factory exhaust manifold on the 6.7L Cummins is built to a cost target. DPF-equipped trucks go through repeated high-temperature regeneration cycles, and that constant thermal expansion and contraction eventually cracks the OEM casting - especially at the slip joints and around bolt bosses. The BD 1046065 is cast from high-silicon ductile iron, a material chosen specifically for its ability to flex under thermal stress without fracturing. The thick-walled casting adds structural margin, and the precision slip joints are designed to let the manifold expand and contract freely - reducing cyclic thermal fatigue rather than fighting it.

If your truck is stock and your manifold is intact, you do not need this kit yet. If you have an existing crack, an exhaust leak at the manifold, or are doing a proactive replacement on a high-mileage 6.7L pickup, this is the correct direct-fit replacement to order. Confirm your year range is 2007.5-2018, your body style is a pickup (not cab and chassis), and your truck is not a California-registered vehicle - then this is the right manifold for the job.

High-Silicon Ductile Iron and the Slip Joint Difference

Most exhaust manifold replacements on the market use a standard cast iron alloy. The BD 1046065 uses high-silicon ductile iron - a material with higher flexibility under thermal load, which directly addresses the cracking failure mode that affects DPF-equipped 6.7L Cummins trucks. Silicon content in ductile iron increases resistance to thermal shock, which matters most on trucks that regularly cycle through DPF regeneration temperatures.

The thick-walled casting adds physical margin against cracking at the bolt bosses and exhaust ports - areas where OEM manifolds most commonly fail. The precision slip joints allow the manifold body to move as it expands and contracts with heat cycles, rather than transmitting that stress into the casting itself. The manifold is also pre-drilled for pyrometer probe installation, and fully EGR-compatible for trucks running the factory emissions configuration.

What Comes in the Box

The BD 1046065 is a complete kit. Everything needed for the manifold replacement is included:

• High-silicon ductile iron divided pulse exhaust manifold
• EGR port gasket
• Exhaust port gasket
• Turbo mount gasket
• Grade 10.9 black oxide-coated bolts
• Spacers

No separate gasket set or hardware kit purchase is required for the manifold replacement on this pickup application.

BD 1046065 Key Specs at a Glance

Confirm these order-gating specs match your application before adding to cart:

If your year, engine, body style, and California registration status match the specs above, this is the correct manifold to order.

Cross Reference - OEM and Cummins Part Numbers

If your current manifold carries any of the numbers below, the BD 1046065 is the confirmed direct replacement for pickup applications:

• Chrysler / Mopar 68027070AA
• Chrysler / Mopar 68027070AB
• Chrysler / Mopar 68210184AB
• Cummins 5301441

Match your existing OEM number here - if it appears on this list and your truck is a pickup, the 1046065 is the correct replacement to order.

Avoid These Common Ordering Mistakes

• Ordering for a cab and chassis truck: The 1046065 fits pickup body styles only. Cab and chassis applications require a different manifold - see the BD 07.5-12 Ram C&C manifold (2007.5-2012) or the BD 13-18 Ram C&C manifold (2013-2018).
• Wrong year range: This manifold fits 2007.5-2018 only. Pre-2007.5 trucks use the 5.9L Cummins and require a different manifold.
• California-registered vehicles: This kit is not approved for use on licensed California vehicles. Do not order for a California-tagged truck.
• Ordering hardware separately: Gaskets, bolts, and spacers are already included. No separate kit purchase is needed.
• Assuming the 5.9L fits: The 6.7L Cummins uses a different manifold design than the 5.9L. Verify the engine before ordering.

6.7L Cummins Pickup Fitment Coverage

The BD Diesel 1046065 fits the following pickup applications:

• 2007.5-2018 Dodge / Ram 2500 Pickup - 6.7L Cummins
• 2007.5-2018 Dodge / Ram 3500 Pickup - 6.7L Cummins

This manifold does not fit cab and chassis configurations. If your truck is a Ram C&C, see the BD 07.5-12 Ram C&C exhaust manifold for 2007.5-2012 or the BD 13-18 Ram C&C exhaust manifold for 2013-2018. This manifold also does not fit 5.9L Cummins applications or pre-2007.5 model years.

Final Check Before You Order

• Truck is a pickup (not a cab and chassis)
• Model year is 2007.5-2018 (Ram 2500 or 3500)
• Engine confirmed as 6.7L Cummins (not 5.9L)
• Truck is not a California-licensed vehicle
• All gaskets, bolts, and spacers confirmed included - no separate hardware order needed

For a 2007.5-2018 Ram 2500 or 3500 pickup with a cracked or leaking 6.7L Cummins exhaust manifold, the BD Diesel 1046065 is the correct direct-fit replacement to order - complete hardware included, 36-month warranty backed.

Frequently Asked Questions