Camshaft for Cummins 6CT8.3 diesel engines, aftermarket engine timing component that controls the opening and closing of intake and exhaust valves. All part numbers are cross-referenced against OEM specs for direct matching.

Part numbers: 3923478, 3924471, 3914640, 3919800, 3919799
Fits: Cummins 6CT8.3 diesel engine
Position: Cylinder block valve timing control assembly

What you are ordering
Price is per camshaft. All part numbers are separate variants, please select the correct PN from variant options. These camshafts are not interchangeable. Different part numbers have different cam lift profiles and timing parameters. Wrong selection will cause abnormal valve timing, insufficient power and valve collision.

Specifications
Material: alloy cast iron
Structure: precision machined cam lobes and journals
Lobe and journal dimension: calibrated to OEM standard
Finish: surface quenching treatment, wear-resistant, runout inspected before packing
Packing: individual protective case, marked with part number

When to replace
Replace the camshaft when cam lobes or journals are worn, pitted or scored. Common failure signs: noisy valve train, power drop, unstable idle, poor exhaust performance. Replace the camshaft during engine overhaul, and replace camshaft bushings at the same time.

Fitting notes
Strictly confirm engine serial number and specification before assembly. Do not install camshafts of different part numbers interchangeably. Follow Cummins service manual for timing alignment and valve clearance adjustment. If you are not sure which PN 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.