Click to expand Tap to zoom 6.4 Powerstroke Billet LPOP Gear by Warren Diesel Injection LLC Save $-625.00 $625.00 | / SKU wdi-6-4-lpopgear 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Billet inner gear coated with nickel boron coating. Guaranteed not to break.