Cummins PT Fuel Pump Series Spring Set Cover Assembly 3065376 3021977 Engine Parts

Part Number : 3065376/3021977 (REV F, 2025 formulation)

Compatibility : Cummins PT fuel systems in packaging machinery

Operating Pressure : 800–1,200 psi (adjustable)

Thermal Range : -40°C to 250°C (-40°F to 482°F)

Dimensions : φ120 mm OD × 65 mm height

Weight : 1.2 kg (2.65 lbs)

Life Certification : 15,000-hour bench test (30,000 cycles)

Cleanliness : ISO 4406 16/14/12 pre-installation

NT855 / NTA855 generator sets, construction machinery, marine engines
KTA19 / QSK19
KTA38 / QSK38
KTA50 / QSK50

Supporting Equipment: high-power diesel generator sets, mining dump trucks, oilfield drilling power, marine main engines, fire pump units ...

1. Mounted on the outside of the PT fuel pump spring assembly, it encloses the internal injector control springs and plunger spring assembly;

2. Protects the spring set from intrusion by dust, moisture, and oil impurities, preventing spring jamming and corrosion failure;

3. Limits the spring travel, cushions oil pressure impacts, and stabilizes the rebound accuracy of the PT pump plunger;

4. Seals the side cavity of the pump body to prevent engine oil and diesel from leaking, maintaining the cleanliness of the fuel pump.