12 Pcs Exhaust Studs 3944593 for Dodge Ram 1500 2500 3500 Truck Exhaust Manifold to Head Bolts Features： 1、OE Number: The referencing OE number of this exhaust manifold bolts are 3944593, 3901448, which is molded and designed depend on the original data. 2、Fitment: The exhaust manifold bolts studs is a replacement for Cummins 5.9 6.7 6BT QSB ISC ISL, replacement for Dodge Ram, repalcement for Cummins engines 5.9L, 6.7L. 3、Function: The package includes twelve bolts to replace worn out or damaged original exhaust manifold bolts for better fixation, reduce driving noise. 4、Durable Material: Made of hard metal alloy, high hardness, anti wear, perfect fit for your model, not easy to rust, long service life. 5、Easy to Install: Stringently manufactured to meet the original standard, perfect replacement for the old or broken one, improving the time efficiency. Specification： Item Type: Exhaust Manifold Bolts OE Number: 3944593, 3901448 Material: Metal alloy Fitment: Replacement for Cummins 5.9,6.7, 6BT, QSB, ISC, ISL Replacement for Dodge Ram Replacement for Cummins engines 5.9L, 6.7L Replacement for Cummins engines 4bt, 6bt, QSB, ISC, ISL, 3.9L, 5.9L, 6.7L, 8.9L Package List： 12 x Bolt