BD Diesel USA is a performance-oriented company specializing in high-quality diesel and heavy-duty truck components and upgrades. Their products are engineered to handle high pressure, high temperature, high load, and extended operation, not just occasional use. With years in the field (including intensive hours of idling, towing, and heavy usage), the BD Diesel's engineering and R&D is informed by real use cases.
This downpipe was originally designed as part of BD's original Compound Twin Turbo kits (Tow Twin Turbos, R700 Twin Turbos, R850 Twin Turbos). Typically used as a replacement part for the above-mentioned compound twin turbo kits but can be modified for other applications.
Warranty:
Parts
- 12-Months
Note:
Not for sale on licensed California vehicles
Emissions:
This product has met EPA's reasonable basis requirements and is legal for sale and use within the jurisdiction of the federal EPA. (EMS:2)
Features:
- Downpipe used with install of S400 turbos with full Marmon 4.2-inch flange
- Comes with Turbo V-Band Clamp
- Comes with Exhaust Band Clamp
Installation Notes:
Professional installation is required.
Specifications:
Material: Aluminized.
EMS Code: 2.
Shipping Restriction: Not for sale on licensed California vehicles.
Warranty: 12-Months.
Fitment & Application:
| Brand | BD Diesel |
|---|---|
| Part Number | BDD-1045240 |
| Shipping Method | UPS/FedEx/USPS Ground |
| California Prop 65 Warning |
|

This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or reproductive harm. For more information, visit https://www.p65warnings.ca.gov/