DDP 8993-ECO Economy Series Injector Set for 1989–1993 5.9L 12-Valve Cummins

Upgrade your First Gen Dodge Ram with a premium, all-new injector set designed for daily driving, reliability, and a modest performance bump. The Dynomite Diesel (DDP) Economy Series injectors use brand-new injector bodies and new SAC nozzles — not remanufactured cores — for OEM-quality durability plus a slight gain over stock.

These injectors are built for 1989–1993 Dodge Ram 2500/3500 trucks with the 5.9L 12-valve Cummins and VE rotary pump. They deliver cleaner combustion, reduced idle haze, smoother operation, and better throttle response while remaining a drop-in solution for stock or lightly modified trucks.

Key Features & Benefits

• Brand-new injector body and nozzle (no reman cores)
• Slight performance increase over factory injectors
• Patented dual 0.005" pilot-hole technology eliminates idle haze and improves throttle response
• SAC nozzle design with 5x10 holes at 245 BAR for better atomization
• Improved fuel economy and cleaner burn
• Precision-balanced set of 6 for consistent cylinder-to-cylinder fueling
• 1.5 mm copper washers included
• No core charge

The K-Factor style nozzles and pilot technology help produce a finer spray pattern, reducing smoke and EGTs while turning more fuel into usable power.

Technical Specifications

• Application: 1989–1993 Dodge 5.9L 12-valve Cummins (First Gen)
• Quantity: Set of 6
• Nozzle style: SAC
• Hole configuration: 5 × 10
• Opening pressure: 245 BAR
• Pilot holes: 2 × 0.005"
• Copper washer: 1.5 mm
• Condition: New (not remanufactured)

Fitment Notes

These injectors use a 7 mm nozzle with the standard 1.5 mm copper washer. Early non-intercooled engines have a 9 mm bore in the head. DDP has run the standard washer on these heads for years and prefers it because it positions the nozzle tip slightly closer to the piston for a cleaner burn. A 9 mm adapter sleeve (Cummins PN 3919358) is not required and is not recommended by the manufacturer.