The Vibrant 10419 is a heat sink oxygen sensor weld bung made from T304 stainless steel with an M18 x 1.5 thread, designed to help prevent premature oxygen sensor failure. Its finned surface improves convective cooling for up to 30 percent cooler O2 sensor temperatures compared with a standard bung, and the coped design makes welding easier. It fits a Bosch LSU 4.9 oxygen sensor only.
- Type: heat sink O2 sensor weld bung
- Material: T304 stainless steel
- Thread: M18 x 1.5
- Benefit: up to 30 percent cooler sensor temperatures, coped for easier welding
- Fits: Bosch LSU 4.9 oxygen sensor only
- Part number: 10419
FAQ
What sensor does the 10419 fit?
A Bosch LSU 4.9 oxygen sensor only.
What thread does it use?
M18 x 1.5.
What is the benefit of the heat sink design?
The finned surface delivers up to 30 percent cooler O2 sensor temperatures compared with a standard bung.

