Cummins PT fuel pump cover front large sealing oil seal 3075523 Series is a critical sealing part for Chongqing Cummins NT855, K19 and K38 diesel engines. It is installed on the front cover of PT fuel pump to prevent oil leakage and dust ingress, protect the internal precision governor and gear components of PT pump, widely used in construction machinery, mining equipment, generator sets and marine diesel engines.

Part numbers in this series:
3075523, 3803615

Fits: Chongqing Cummins NT855, K19, K38 Diesel Engine
Position: PT fuel pump front cover

What you are ordering
Price is per oil seal. All part numbers are separate variants, please select the correct PN from variant options. These oil seals are not interchangeable. Different part numbers have different inner diameter, outer diameter and thickness. Wrong selection will cause fuel leakage and PT pump failure.

Specifications
Type: PT pump front cover large oil seal
Material: FKM / NBR rubber with metal shell
Feature: High temperature resistance, oil resistance, wear resistance
Package: Neutral packing

When to replace
Replace the oil seal when fuel leakage appears at the front end of PT fuel pump, oil seepage, dust entering into pump interior.

Fitting notes
Strictly confirm part number before ordering. Keep the shaft surface clean and scratch-free during installation. Use proper seal installation tool to avoid lip damage. Follow Cummins service manual for assembly. If you are not sure which oil seal matches your engine, send us engine serial number for confirmation.

Warranty and shipping
Covered by a 12-month warranty against manufacturing defects. Orders are dispatched within 3–7 business days; DHL / FedEx delivery takes 5–10 business days. Tracking number is sent as soon as the parcel leaves our warehouse.

Note: manufacturer names and part numbers are used for identification and cross-referencing only. We are an independent aftermarket supplier and are not affiliated with, or authorised by, the original manufacturer. Please verify the part number against your engine's parts catalogue before ordering — our team is happy to help if you send us your engine model or serial number.