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These are the only aftermarket Exhaust Manifolds for the 3.8L available in the USA so if your Montero has a cracked manifold (as is very common on the original OEM ones), your options currently are:
1. New OEM manifold for around $350 from Mitsubishi
2. Aftermarket Headers shipped from Australia for around $800-$1,000 (added welding, drilling, spacers may be required)
3. Used Junkyard unit - but high probability it has cracks in it as well
4. This new aftermarket manifold for less than 1/2 the price of the OEM unit.
As you can see, these are not Swiss quality made parts. The castings will have imperfections and pits, the heat shield threads are often not perfectly centered, and there are visible hand grinding/finishing marks. But this unit will bolt up correctly and will get you back on the road for less than 1/2 the price of OEM. We've used these manifolds on our own Monteros, have sold many over the last 2 years, and have yet to see or hear of a single failure.
2 Exhaust Manifold Flange studs are included: interchange Mitsubishi Part Number MR497545. Professional installation is highly recommended for these studs, they are much harder to install than the exhaust studs located on the engine cylinder heads because they must be driven deeper into harder metal which requires a lot of force and precision.
LOCATION: LEFT / DRIVER
ACCESSORIES: Includes 2 Exhaust Manifold Flange Studs
*This part is for the Full Size Montero, NOT the Montero Sport. 3.8L Engine only.