Oil Filler Cap With Oil Return Port
The New Generation Oil Filler Cap
Our new-generation oil filler caps are included with all Insane Diesel bypass oil filtration kits manufactured after 2020. They are engineered for:
- Seamless oil return integration from the bypass filter to your engine.
- Simplified, safer installation.
- Long-term durability under real-world operating conditions.
- Compatibility with our 360° swivel fittings, allowing for easier installation and simplified hose routing.
Legacy Oil Filler Caps -
Pre-2020 Generation
These are legacy Insane Diesel oil filler caps manufactured prior to 2020. This design is no longer used in current Insane Diesel kits , but remains available to support older installations and customers using competitor bypass systems that require additional components to achieve a proper oil return setup.
