Cheap And Discounts Oil Cooler Cover Filter Head Support Pressure Regulator For Cummins 4B 6B5.9 12V 3918954 4934217 4934218 Wholesale. Buy Directly From Merchant CarRolls Parts Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.