Fuel pump STC oil control valve for Cummins K19, NT855, M11 diesel engines, aftermarket replacement PT fuel pump STC hydraulic control parts. All part numbers are cross-referenced against OEM specs for direct matching.

Part numbers: 3056564, 3056565, 3060609, 3063022, 3070128, 3071599, 3072335, 3076332
Fits: Cummins K19, NT855, M11 diesel engine
Position: PT fuel pump STC timing control assembly

What you are ordering
Price is per STC oil control valve. All part numbers are separate variants, please select the correct PN from variant options. These STC valves are not interchangeable. Different part numbers have different oil flow rate, pressure setting and mounting interface. Wrong selection will cause incorrect injection timing, poor power output, excessive exhaust smoke, rough running and fuel economy drop.

Specifications
Body material: high strength alloy steel
Structure: integrated STC hydraulic control valve assembly
Pressure & flow: calibrated to OEM standard
Finish: precision ground, wear-resistant & anti-corrosion treatment, hydraulic tested before packing
Packing: individual protective box, marked with part number

When to replace
STC oil control valve suffers internal spool wear, seal leakage and oil passage blockage from contaminated lube oil after long running hours. Common failure signs: engine power loss, black smoke, unstable running, timing deviation, hard starting. Replace the matched STC oil control valve together when abnormal performance appears, and clean the oil circuit and check oil filter condition at the same time.

Fitting notes
Strictly confirm the part number and oil port layout before assembly. Do not install STC valves of different part numbers interchangeably. Follow Cummins service manual for installation, oil pressure check and timing calibration. If you are not sure which PN matches your engine CPL, 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.