The Mahle OE plasma-moly compression ring set is sized 4.3800 in x .017 in and supplied as a complete moly ring set suitable for OE-style restoration. These rings use plasma-moly technology for compression sealing and are presented without filler details, so they serve as a straightforward replacement option for engine rebuilds that require correct dimensions and moly ring construction.
Mahle Rings 4.3800in X .017in Plasma-Moly Dykes Ductile Top Compression Ring Moly Ring Set