BD Diesel 14-24 RAM 2500-5500 6.4L Hemi Driver Side Exhaust Manifold

When the factory exhaust manifold on your 6.4L HEMI starts cracking, warping, or leaking, the BD Diesel 1041456 driver side exhaust manifold delivers a direct-fit, OEM-quality replacement engineered specifically for the 2014-2024 RAM 2500, 3500, 4500, and 5500 equipped with the 6.4L HEMI GAS engine. The 1041456 installs on the driver side only and is manufactured from high-silicon ductile iron the same alloy grade used in original equipment to handle the extreme thermal cycling that destroys weaker cast iron alternatives. Whether you are running a work truck or a heavy hauler, the BD Diesel 1041456 restores proper exhaust flow and sealing on your driver side without compromise.

Key Features

• Direct OEM replacement for the driver side exhaust manifold on 2014-2024 RAM 2500, 3500, 4500, and 5500 with 6.4L HEMI GAS engines
• High-silicon ductile iron construction resists thermal cracking, warping, and porosity failures common in standard cast iron manifolds
• SEMA certified (Certification No. SC-BDD01-0138) for fit, form, and function compliance
• Includes all new hardware: mounting bolts, nuts, spacers, and gaskets no separate hardware kit needed
• 36-month / 75,000-mile warranty provides long-term coverage for commercial and personal use applications
• Estimated installation time of approximately 3 hours 54 minutes for a standard shop or experienced DIY technician
• Driver side position only pair with 1041464 for passenger side coverage, or choose 1041454 for the complete dual-manifold kit
• MPN 1041456 is a vehicle-specific part designed to match factory port dimensions and bolt patterns exactly

Specifications

What's Included

• 1x BD Diesel 1041456 driver side exhaust manifold
• New mounting bolts
• New nuts
• New spacers
• New gaskets

Fitment

Companion Products — Complete Your Exhaust Manifold Replacement

The BD Diesel 1041456 covers the driver side only. If you need to replace both manifolds on your 6.4L HEMI, BD Diesel offers two additional options:

• BD Diesel 1041464 — Passenger side exhaust manifold, the direct complement to the 1041456 for a complete dual-manifold replacement when purchased separately.
• BD Diesel 1041454 — Full exhaust manifold kit that includes both driver and passenger side manifolds with all required hardware, ideal when both manifolds need replacement at the same time.

Replacing both manifolds at the same time is recommended any time the engine is partially disassembled, as the passenger side manifold experiences the same thermal fatigue cycles as the driver side 1041456.

Installation Instructions

The following steps apply to the BD Diesel 1041456 driver side exhaust manifold on 2014-2024 RAM 2500, 3500, 4500, and 5500 vehicles with the 6.4L HEMI GAS engine. Allow approximately 3 hours 54 minutes for this procedure. Always allow the engine to cool fully before beginning work on exhaust components.

• Step 1 — Safety and preparation: Disconnect the negative battery terminal. Allow the engine and exhaust system to cool completely to ambient temperature before touching any exhaust hardware. Work on a level surface with the vehicle secured.
• Step 2 — Raise and support the vehicle: Lift the front of the vehicle and place it on rated jack stands if underhood access to the lower manifold bolts requires it. Inspect the work area and confirm adequate clearance on the driver side.
• Step 3 — Remove heat shields: Remove any heat shields covering the driver side exhaust manifold. These are typically retained by 8mm or 10mm bolts. Set them aside for reinstallation.
• Step 4 — Disconnect the oxygen sensor(s): Locate and unplug any upstream oxygen sensor connectors on the driver side. Use an O2 sensor socket to remove the sensor(s) from the manifold and set aside carefully to avoid damaging the wiring pigtail.
• Step 5 — Disconnect the exhaust downpipe: Remove the exhaust pipe-to-manifold nuts connecting the driver side downpipe or Y-pipe to the manifold. Standard torque on reassembly is 25 ft-lbs. Support the pipe so it does not stress the flex section when it comes free.
• Step 6 — Remove the exhaust manifold bolts: Working from the outer bolts inward (outside toward center), remove all exhaust manifold mounting bolts. These are the bolts being replaced by the new hardware included with the 1041456 kit. Discard the old bolts, nuts, and spacers.
• Step 7 — Remove the old manifold and gasket: Carefully pull the old driver side manifold away from the cylinder head. Remove and discard the old gasket. Inspect the cylinder head mating surface for cracks, corrosion, or distortion. Clean the mating surface thoroughly.
• Step 8 — Inspect and prepare fasteners: Inspect the included new bolts, nuts, spacers, and gasket from the 1041456 kit. Apply a thin, even coat of anti-seize compound to all new exhaust fastener threads before installation. Anti-seize is required on all exhaust hardware to prevent galling and to allow future serviceability.
• Step 9 — Install the new gasket and manifold: Place the new gasket from the kit against the cylinder head, aligning it with the port openings. Position the new BD Diesel 1041456 manifold against the gasket and hand-thread all new mounting bolts with spacers and nuts as applicable.
• Step 10 — Torque manifold bolts to spec: Tighten the exhaust manifold bolts in sequence, starting from the center bolts and working outward toward each end. Torque to 15-18 ft-lbs in multiple passes. Do not overtighten — the high-silicon ductile iron construction of the 1041456 is designed to seal correctly at the specified torque range.
• Step 11 — Reconnect the exhaust downpipe: Reconnect the driver side downpipe or Y-pipe flange to the new 1041456 manifold using the included new nuts. Torque the exhaust pipe-to-manifold nuts to 25 ft-lbs. Apply anti-seize to these fasteners as well.
• Step 12 — Reinstall oxygen sensor(s): Reinstall the upstream oxygen sensor(s) into the new manifold. Torque O2 sensors to the manufacturer specification (typically 22-30 ft-lbs). Reconnect all sensor wiring connectors securely.
• Step 13 — Reinstall heat shields and final checks: Reinstall all heat shields in their original positions. Reconnect the negative battery terminal. Start the engine and allow it to reach operating temperature. Inspect the entire driver side for exhaust leaks, paying special attention to the manifold-to-head gasket surface and the downpipe connection.
• Step 14 — Retorque after first heat cycle: After the first full heat cycle (drive cycle to full operating temperature and return to ambient), retorque the manifold bolts to confirm they remain within the 15-18 ft-lbs specification. This step is especially important on fresh exhaust installations.

Frequently Asked Questions

• What vehicles does the BD Diesel 1041456 fit?

  The 1041456 fits 2014 through 2024 RAM 2500, 3500, 4500, and 5500 trucks equipped with the 6.4L HEMI GAS engine. It is a driver side part only and does not fit the passenger side.

• Is the 1041456 a direct OEM replacement or does it require modification?

  The BD Diesel 1041456 is engineered as a direct OEM replacement. It matches the factory bolt pattern, port dimensions, and mounting configuration on the 6.4L HEMI cylinder head. No cutting, welding, or modification is required for a standard installation.

• What is the difference between the 1041456 and the 1041454?

  The 1041456 is the driver side exhaust manifold only. The 1041454 is a complete kit that includes both driver and passenger side manifolds. If you only need the driver side, the 1041456 is the correct part. If you need the passenger side separately, that is part number 1041464.

• Why is the 1041456 made from high-silicon ductile iron instead of standard cast iron?

  High-silicon ductile iron offers significantly better resistance to thermal fatigue cracking, warping, and oxidation compared to standard cast iron. The 6.4L HEMI runs at high exhaust temperatures, and the ductile iron alloy used in the 1041456 is the same OEM-grade specification used in original factory manifolds for this reason.

• What torque spec should I use for the BD Diesel 1041456 manifold bolts?

  Torque the exhaust manifold mounting bolts to 15-18 ft-lbs, working from the center bolts outward in sequence. The exhaust pipe-to-manifold connection nuts should be torqued to 25 ft-lbs. Apply anti-seize compound to all exhaust fasteners before installation.

• Does the 1041456 come with a gasket and hardware?

  Yes. The BD Diesel 1041456 kit includes the manifold plus all necessary hardware: new mounting bolts, nuts, spacers, and gaskets. You do not need to purchase a separate hardware or gasket kit.

• How long does it take to install the BD Diesel 1041456?

  Estimated installation time is approximately 3 hours 54 minutes for a qualified technician or experienced DIY installer working on a 2014-2024 RAM with the 6.4L HEMI. This estimate assumes a standard installation without complications such as broken fasteners or extensive corrosion.

• What warranty does the BD Diesel 1041456 carry?

  The 1041456 is covered by a 36-month / 75,000-mile warranty from BD Diesel. Full warranty details and claim procedures are available through BD Diesel directly or through the retailer at the time of purchase.

• Is the BD Diesel 1041456 SEMA certified?

  Yes. The 1041456 carries SEMA Certification No. SC-BDD01-0138, verifying that this part meets the standards set by the Specialty Equipment Market Association for fit, form, and function on applicable vehicles.

• Can I use the 1041456 on a RAM 3500 Chassis Cab or RAM 4500/5500?

  Yes. The BD Diesel 1041456 is compatible with the RAM 2500, 3500, 4500, and 5500 across the full 2014-2024 model range as long as the vehicle is equipped with the 6.4L HEMI GAS engine. This includes chassis cab configurations on the 4500 and 5500.

California Proposition 65 Warning

WARNING: This product can expose you to chemicals including carbon monoxide, which is known to the State of California to cause birth defects or other reproductive harm. For more information, go to www.p65warnings.ca.gov.

Important: This product is not available for sale in California and cannot be shipped to California addresses. Orders placed from California will be cancelled.

Warranty Information

The BD Diesel 1041456 driver side exhaust manifold is backed by a 36-month / 75,000-mile limited warranty against defects in materials and workmanship under normal use and installation conditions. This warranty applies from the date of original purchase.

This warranty is provided in accordance with the Magnuson-Moss Warranty Act (15 U.S.C. §§ 2301-2312), which governs consumer product warranties in the United States. Under the Magnuson-Moss Warranty Act, you have the right to a full written warranty disclosure, and warranty coverage does not require you to use any specific brand of maintenance product unless that product is provided free of charge. Using a non-BD Diesel exhaust gasket or hardware does not automatically void this warranty, provided the installation and use of the product otherwise complies with BD Diesel's warranty terms.

To make a warranty claim on the 1041456, retain your original purchase receipt and contact BD Diesel or the authorized dealer through whom you purchased the product. Warranty claims are evaluated based on the nature of the failure and proper installation per the included instructions.