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- 0905 Series - AP Steel 1.5mm x 1.5mm x 3mm
Modular Head Shop - 0905 Series - AP Steel 1.5mm x 1.5mm x 3mm
The 0905 prefix is a Total Seal AP Steel Top Ring Set that inlcudes Stainless Steel C-33 PVD Coated Top Rings, Cast Iron RBT 2nd Rings and 3 Piece SS Oil Rings. The AP Steel Top Ring is designed for power adder applications and is the suggest ring set for most Ford Modular power adder applications. These Rings have a 1.5mm x 1.5mm x 3mm Ring Stack and fit all the same PN's as the 0906 suffix and are direct replacements for all the RS Suffix / Mod2K Pistons.