The aFe 46-40012 is an engine-specific One-piece cast ductile iron with reinforced port flanges and matched/merged runners; not stainless tubing. This replaces the manifold feeding the turbocharger, not a complete exhaust system, muffler or tailpipe.
| Years | Model | Exact engine / requirements |
|---|---|---|
| 2003–2007 | Dodge Ram 2500 / 3500 | 5.9L Cummins inline-six turbo diesel |
46-40012: The exact primary page and October 2017 guide explicitly exclude gaskets. The older manufacturer guide's shared D-550-9 family bullet does not replace the current exact page's D-550-39 identification. Generic Filter Included/Coupler Included fields are not air-filter or hose contents. Neither the thick flange nor reported flow comparison guarantees freedom from cracks or a specific power gain.
| Detail | Value |
|---|---|
| Manufacturer Part Number | 46-40012 |
| Configuration | Engine-specific exhaust manifold; EGT probes and gauges are separate |
| Material / runners | One-piece cast ductile iron with reinforced port flanges and matched/merged runners; not stainless tubing. |
| Finish | No coating, polished tip or heat-wrap package is certified by the exact written sources |
| Fasteners / torque | 32 ft-lb for anti-seize-treated manifold bolts in the guide's factory sequence; recheck connections after 100–200 miles. Separate turbo, plug and clamp values are not supplied as that setting. |
| Retained equipment / installation | Requires turbo removal and reconnection of downpipe, outlet, oil lines and applicable electrical connector. Cut the original water-line bracket 2 inches from the water line and install supplied supports; reinstall the factory heat shield. |
| Emissions | Current exact manufacturer page cites D-550-39; official indexed Exhibit A lists this exact part/engine/year. Match the actual application and order conditions; a family citation is not unrestricted approval. Its indexed scope is 2003–2007 5.9L turbo diesel. |
aFe Power develops application-specific intake, filtration, exhaust, cooling, tuning, suspension, drivetrain, and truck-performance components supported by product testing and documented installation requirements.
An exhaust manifold for the listed 5.9L Cummins inline-six turbo diesel. It is not an entire exhaust or a guarantee of a particular sound level.
Which material and construction does this part use?One-piece cast ductile iron with reinforced port flanges and matched/merged runners; not stainless tubing.
Are the required gaskets included?Not included. The exact guide recommends new gaskets and prints exhaust-manifold reference 513589AA and turbo-flange 3949530; confirm the correct current OEM service part for the actual engine.
Does it include EGT probes or gauges?No such equipment is included in the exact contents. Match any separate probe to the actual port and seal unused openings.
What water-line or retained-equipment work is required?Requires turbo removal and reconnection of downpipe, outlet, oil lines and applicable electrical connector. Cut the original water-line bracket 2 inches from the water line and install supplied supports; reinstall the factory heat shield.
What is the manifold torque and recheck interval?32 ft-lb for anti-seize-treated manifold bolts in the guide's factory sequence; recheck connections after 100–200 miles. Separate turbo, plug and clamp values are not supplied as that setting.
Are any exact-source packaging or procedure conflicts unresolved?The exact primary page and October 2017 guide explicitly exclude gaskets. The older manufacturer guide's shared D-550-9 family bullet does not replace the current exact page's D-550-39 identification. Generic Filter Included/Coupler Included fields are not air-filter or hose contents. Neither the thick flange nor reported flow comparison guarantees freedom from cracks or a specific power gain.
What emissions application is documented?Current exact manufacturer page cites D-550-39; official indexed Exhibit A lists this exact part/engine/year. Match the actual application and order conditions; a family citation is not unrestricted approval. Its indexed scope is 2003–2007 5.9L turbo diesel.
46-40012: inspect every connection and resolve the documented kit discrepancies before operation.
California Proposition 65 warning: this product can expose you to chemicals known to the State of California to cause cancer and reproductive harm.
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