PT fuel pump viscous vibration damper shock absorber assembly for Cummins NT855, K19, M11 diesel engines, aftermarket replacement PT fuel pump damping parts. All part numbers are cross-referenced against OEM specs for direct matching.

Part numbers: BM76340, AR12110, AR12111, AR12112
Fits: Cummins NT855, K19, M11 diesel engine
Position: PT fuel pump vibration damping assembly

What you are ordering
Price is per vibration damper assembly. All part numbers are separate variants, please select the correct PN from variant options. These damper assemblies are not interchangeable. Different part numbers have different damping rates, inlet size and mounting dimensions. Wrong selection will cause excessive fuel pump vibration, fuel pressure fluctuation, rough running and accelerated wear of fuel pump internal components.

Specifications
Structure: integrated viscous vibration damper assembly
Damping medium: high stability viscous fluid
Housing: high strength alloy housing
Finish: wear-resistant & anti-corrosion treatment, pressure and damping tested before packing
Packing: individual protective box, marked with part number

When to replace
Vibration damper suffers viscous fluid aging, seal leakage and performance decay after long running hours. Common failure signs: obvious fuel pump vibration, fluctuating fuel pressure, engine hunting, abnormal noise from PT pump. Replace the matched damper assembly together when damping performance drops, and inspect fuel pump mounting bolts and bracket at the same time.

Fitting notes
Strictly confirm the mounting dimension and port size before assembly. Do not install dampers of different part numbers interchangeably. Follow Cummins service manual for torque and installation procedure. 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.