Add to Cart Peterbilt Exhaust Flex Pipe M66-3541 M66-4111 EBKW11865 Dinex MSRP: Now: $153.95 Was: Peterbilt Exhaust Flex Pipe M66-3541 M66-4111 EBKW11865 *Please verify your OEM number(s) before purchasing. Exhaust Flex Pipe Fits Various Peterbilt Trucks OEM Part Number Cross Reference: M66-7091-320 M66-3541 EBKW11865 Exhaust Emission... MSRP: Now: $153.95 Was: Add to Cart