This BD 1045987 pulse exhaust manifold is an ideal drop - in replacement for 2003 - 2007 Dodge Ram with 5.9L Cummins engines. Crafted from high - silicon ductile iron, it's built to handle extreme temperatures and vibrations. Using modern tech, it has optimal internal geometry. The precision slip joints let the manifold expand and contract, reducing thermal fatigue and boosting its lifespan. It replaces Cummins part numbers 3967995, 3943871, and 3943875. Key features include a fully navided pulse design, pre - drilled for pyrometer probes, great for both stock and performance setups, and it comes with stainless - steel hardware. Gasket, bolt, and spacer kits are sold separately. This manifold can directly replace Cummins parts used in pick - up, motor homes, and industrial/commercial engines.

Using this exhaust manifold is easy. First, make sure your vehicle is a 2003 - 2007 Dodge Ram with a 5.9L Cummins engine. Remove the old exhaust manifold and replace it with the BD 1045987. Use the included stainless - steel hardware for installation. Note that gasket, bolt, and spacer kits are sold separately, so you may need to purchase them if needed. When using your vehicle, this manifold can handle extreme temperatures and vibrations, but it's still a good idea to check it regularly for any signs of wear or damage. If you notice any cracks or exhaust leaks, have it inspected right away. For maintenance, keep it clean and free from debris. This will help it perform at its best and last longer.