PT fuel pump governor plunger for Cummins K19, NT855, M11 diesel engines, aftermarket replacement PT fuel pump governor core parts. All part numbers are cross-referenced against OEM specs for direct matching.

Part numbers: 3010810, 3040760, 3015595, AR40130, AR40230, AR40240
Fits: Cummins K19, NT855, M11 diesel engine
Position: PT fuel pump governor control assembly

What you are ordering
Price is per governor plunger. All part numbers are separate variants, please select the correct PN from variant options. These governor plungers are not interchangeable. Different part numbers have different oil metering grooves, diameter and flow control characteristics. Wrong selection will cause unstable speed, engine hunting, overspeed risk and abnormal fuel delivery.

Specifications
Material: high precision alloy steel
Structure: precision lapped governor plunger
Flow & metering profile: calibrated to OEM standard
Finish: wear-resistant & anti-corrosion treatment, flow tested before packing
Packing: individual protective tube, marked with part number

When to replace
Governor plunger suffers surface scoring, wear and metering groove damage from contaminated fuel and long service hours. Common failure signs: unstable idle, engine hunting, hard to maintain rated speed, overspeed tendency, poor throttle response. Replace the matched governor plunger together when wear is detected, and inspect the governor barrel and clean fuel circuit at the same time.

Fitting notes
Strictly confirm the plunger profile and dimension before assembly. Do not mix governor plungers of different part numbers. Follow Cummins service manual for governor assembly and speed 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.