Diamond Eye Performance DEP220099 4-Inch Aluminized Turbocharger Downpipe for 1989–1993 Dodge 5.9L Cummins 2500/3500 2WD

Diamond Eye Manufacturing is recognized as being one of the most modern and progressive companies in eastern Oregon. The company has invested heavily to incorporate several CNC mandrel bending machines and support equipment, Enabling us to produce the finest exhaust components in today's marketplace. Mandrel bending and fabrication parameters are extensive, and a variety of tooling allows us to offer tube processing from 3/8" to 5"OD in both aluminized and stainless steel. Diamond Eye Manufacturing is located on a 23-acre complex and has immediate plans for expansion. Currently, the company utilizes over 60,000 sq. ft. for manufacturing components. Separate from the manufacturing facility, our Warehouse Distribution Center utilizes highly efficient shipping methods and a substantial amount of inventory to ensure rapid response times for delivering customer orders in a timely fashion. Our new state of the art Research and Development Center was established to keep pace with the ever changing automotive performance aftermarket. We have taken great care to outfit the facility with an array of testing equipment to provide our engineers with the information needed to design the best systems available. Many of the employees here at Diamond Eye Manufacturing have several years of experience within the industry. This wealth of knowledge and experience is tapped and transformed into results. Our promise to you is simply this, we will provide you with the highest level of customer service, quality parts, and best prices available to keep you competitive! Turbocharger Down Pipe, 1989-1993 DODGE 5.9L CUMMINS 2500/3500 2X4 ONLY (ALL CAB AND BED LENGTHS)-PERFOR Made in USA, Increased Performance, Aggressive Sound, Affordable

The Diamond Eye Performance DEP220099 turbocharger downpipe is designed for 1989–1993 Dodge 2500 and 3500 trucks equipped with the 5.9L Cummins diesel engine and two-wheel drive. This mandrel-bent, 4-inch aluminized steel downpipe is engineered to improve exhaust flow from the turbocharger while supporting increased performance and an aggressive exhaust tone. It fits all cab and bed lengths within the specified application range.

Manufactured in the USA by Diamond Eye Performance, the DEP220099 reflects the company’s experience in CNC mandrel bending and exhaust component fabrication. Mandrel bending helps maintain a consistent internal diameter through the curves, reducing restrictions compared with conventional bent tubing. The aluminized steel construction provides a practical balance of durability, corrosion resistance, and affordability for street, work, and performance-oriented diesel applications.

This downpipe is a direct-fit component for applicable 1989–1993 Dodge 5.9L Cummins 2500 and 3500 2WD trucks, including the Dodge D250 and D350. It is not CARB approved, and the required emissions compliance acknowledgment should be reviewed before installation. Professional installation is recommended to ensure proper alignment, secure connections, and adequate clearance from surrounding components.

What's Included: One Diamond Eye Performance DEP220099 aluminized turbocharger downpipe.

Features:

• Mandrel-bent tubing: Helps maintain a consistent exhaust passage through bends for improved flow and reduced restriction.
• 4-inch exhaust design: Provides increased flow capacity for turbocharged 5.9L Cummins diesel applications.
• Aluminized steel construction: Offers corrosion resistance and durable performance at an affordable price.
• Application-specific fitment: Designed for 1989–1993 Dodge 2500 and 3500 2WD trucks with all cab and bed lengths.

Fitments:
1989 Dodge D250 Base
1989 Dodge D350 Base
1990 Dodge D350 Base
1991 Dodge D350 Base
1992 Dodge D350 Base
1993 Dodge D350 Base

Air Freight Prohibited: false
Not Carb Approved: true
Carb Acknowledgement Required: true
Ltl Freight Required: false
Prop 65: Unknown
Part Type: automotive
Epa: N/A
Regular Stock: t
Units Per Sku: 1