The Mahle MS single piston is a cast replacement sized for a 407 cid configuration with a 4.075" bore and 1.951" crown dimension, listed as +0.020 oversize. Technical details include a 3.898" stroke, 6.417" rod, 1.358" pin, combustion volume of -40.7cc, mass ~880g, and a 16.8:1 compression ratio. Supplied as a single piston to match the specified DMAX application and dimensions.
Mahle MS Piston DMAX Cast 1.951 x 4.075 16.8CR +020 - Single