The MBRP 121654-180 Aluminized 18" Extension Pipe for your 1989-1993 Dodge 5.9L Cummins is required when installed the MBRP S6150 or S6148 exhaust systems on an extended cab applications.
- 18" Extension Pipe
- Aluminized Construction
- For Use On Extended Cab Models
Note: Works with the following MBRP Part #'s: S6148AL, S6150AL, S6150P, S6150PLM