Description
Upgrade your Cummins engine with the PDI BIG BOSS Oil Fill Cap from Performance Diesel Inc. CNC-machined from high-grade billet aluminum, this heavy-duty replacement offers improved durability and a secure, lock-tight design compared to conventional plastic oil fill caps.
Engineered to resist loosening from engine vibration, the BIG BOSS Oil Fill Cap is field-tested for strength and security.
Product Features:
- Brand: Performance Diesel Inc. (PDI)
- Series: BIG BOSS
- Material: High-Grade Billet Aluminum
- CNC-Machined Construction
- Secure Lock-Tight Design
- Designed to Replace Factory Plastic Oil Fill Caps
- Field-Tested for Strength & Security
Engine Compatibility:
- Cummins ISX12
- Cummins ISX15
- Cummins X12
- Cummins X15
- Model Years: 2010–2019
Replace your factory oil fill cap with the durable PDI BIG BOSS Oil Fill Cap, available at V-Max Truck Sales.




