NEW HEAVY DUTY OIL PUMP FITS DETROIT DIESEL 60 SERIES 11.1L 12.7L 14.0L 23505886. PLEASE CHECK YOUR PART NUMBER TO ENSURE FITMENT. DETROIT DIESEL SERIES 60 11.1L DETROIT DIESEL SERIES 60 12.7L DETROIT DIESEL SERIES 60 14.0L. FITS / Replacement Part Numbers. REPLACES: 23505886 ITEM DESCRIPTION: HEAVY DUTY OIL PUMP WEIGHT: 39 LBS. As a parts distributor we mostly sell aftermarket parts (any OEM parts would be noted as such). The sole responsibility of ComponentsPlus – if any – shall be the replacement of defective products as stated above. It is the responsibility of the customer to verify the correct application information prior to purchasing any product from ComponentsPlus.