PML Rear Differential Cover for Dana 44/226, 10 Bolt - As Cast Finish This cover fits the Dana 44/226 Differential and provides increased oil capacity for cooler running temperatures. 3/16 inch thick wall construction adds strength to the differential housing Sand Cast Aluminum Construction with Raised Fins to dissipate heat Machined gasket surface for a secure seal using RTV or factory reusable gasket Oil changes without removing the cover.