DDP 8993-2 Stage 2 Injector Set – 1989–1993 5.9L 12-Valve Cummins

Unlock noticeable power and cleaner performance from your first-gen 5.9 Cummins with the Dynomite Diesel Stage 2 injector set (DDP 8993-2). These brand-new, precision-matched injectors deliver an approximate 75–100 HP gain over stock and can support up to 350 RWHP when paired with the right supporting modifications.

Key Benefits

• Stronger, more usable power for daily driving, towing, or moderate performance builds
• Excellent smoke control for a cleaner, more efficient running engine
• Patented Pilot Hole Technology (5-hole + 2 pilot holes) for quicker turbo spool and reduced smoke
• Sold as a complete new matched set of 6 injectors — no core charge

Technical Specifications

• Nozzle style: SAC
• Hole configuration: 5 × 12 with 2 × 0.005" pilot holes
• Flow: 48 LPM
• Spray angle: 155°
• Pop pressure: 245 BAR
• Includes 1.5 mm copper washers
• Rated to support 350 RWHP with proper upgrades

Recommended Setup

For best results, these injectors should be used with a modified turbo and a modified VE rotary injection pump. An upgraded fuel pin (DDP PIN) is strongly recommended — without it, you may see little to no power gain.

Fitment: 1989–1993 Dodge Ram 250/350 (D250, D350, W250, W350) with 5.9L 12-valve Cummins.

Important notes: Non-intercooled engines use a 7 mm nozzle with the standard 1.5 mm washer (adapter sleeve not required or recommended).

A proven Stage 2 upgrade that balances extra fuel delivery with good drivability and smoke control for first-gen 12-valve Cummins owners.