A Duramax rod knock after low oil pressure is a wiped shell on that journal. Clevite CB-1805P is one P-series pair at standard size. CB-1990P is a different part number with the same published shaft diameter, so confirm which rod you have.

• Series: P-series is the Clevite tri-metal bearing, steel-backed with a copper-lead overlay, and it is the replacement shell rather than the H-series piece.
• Size: Standard size, for a rod journal that has not been ground undersize. An undersize journal will be too loose on this shell. Published shaft diameter is 2.4764 to 2.4772 inch, the same range as CB-1990P.
• Part number: Clevite CB-1805P.
• Fitment: Duramax, 2001-2016.
• Does not fit: CB-1990P until you confirm the rod, the H-series CB-1805H, a 0.25 mm journal, or a 2017-up L5P.
• Not in the box: The other rod journals are not in the box. Mains, rings, and a piston are not included.

Order today to secure your replacement. Confirm the rod calls for CB-1805P and that the journal is standard.