DDP Stage 3 Injectors | 1994-1998 5.9L 12V Cummins 750HP

Q: Do Stage 3 injectors require a modified P-pump?

Yes. A modified P-pump and an upgraded turbocharger are both explicitly required for Stage 3 injectors. Running Stage 3 fuel delivery without both supporting modifications risks engine damage. If either is still stock, the Stage 2 is the correct injector until the build is ready.

Q: What is the difference between Stage 2 and Stage 3?

Stage 2 supports up to 550 RWHP and flows 48 LPM. Stage 3 supports 700-750 RWHP and flows 56 LPM, and explicitly requires both a modified P-pump and an upgraded turbocharger. Stage 3 is also the largest injector set Dynomite recommends for regular street use.

94-98 Dodge 5.9L 12V Cummins Dynomite Diesel Stage 3 Injector Set

Dynomite Diesel Stage 3 Injectors - 1994-1998 5.9L 12V Cummins

$926.25

Part Number: DDP9498-3
Est. Ship Time: Usually Ships from MFG In 1-3 Days

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Not for Sale in California or Colorado
This injector set cannot be sold or shipped to CA or CO addresses. Verify your shipping address is eligible before ordering.

The DDP9498-3 is a Stage 3 matched injector set for the 1994-1998 Dodge Ram 5.9L 12-valve Cummins. Sold brand new with no core required, these injectors support 700-750 RWHP with a modified P-pump and upgraded turbocharger. This is Dynomite Diesel's largest injector set recommended for frequent street use - not a mild upgrade, and not a bolt-on for stock or lightly modified trucks.

Is This the Right Injector Set?

Buy this if... your 1994-1998 5.9L 12-valve Cummins build has a modified P-pump and an upgraded turbocharger, and the power target is in the 700-750 RWHP range.
Do not choose this if... your P-pump is stock or your turbocharger is unmodified - this injector set requires both to function correctly and safely.
Do not choose this if... your build target is under 700 RWHP - the Stage 2 is the correct injector for builds targeting up to 550 RWHP.
Verify before ordering... your P-pump modification and turbo upgrade are confirmed in the build plan, and your shipping address is outside restricted states.

What Stage 3 Actually Requires

Stage 3 is the largest injector set Dynomite Diesel recommends for a truck that will see regular street use. At 56 LPM flow rate and a 700-750 RWHP ceiling, this is a serious fuel delivery upgrade. Two things are explicitly required before these injectors can be used correctly: a modified P-pump and an upgraded turbocharger. Without both, the fuel delivery this set provides cannot be properly managed and the truck will not perform as intended.

Dynomite also highly recommends upgrading to a set of performance delivery valves to take full advantage of the Stage 3 flow rate. This is not listed as optional at this power level - it is a strong recommendation from the manufacturer.

Modified P-pump and upgraded turbo confirmed? Stage 3 is the correct injector for a 700-750 RWHP street build. If either supporting component is not in the plan, step back to the Stage 2 until the build is ready.

Injector Specs

Application	1994-1998 Dodge Ram 5.9L 12-valve Cummins
Stage	Stage 3 - supports 700-750 RWHP
Nozzle Style	SAC nozzle, 5-hole + 2 pilot holes (patented)
Hole Count / Flow	5x13, 56 LPM, 155 degrees
Pop Pressure	270 BAR
Recommended Timing	20-22 degrees
Required Supporting Mods	Modified P-pump, upgraded turbocharger
Copper Washer	0.5mm included
Condition	Brand new matched set
Core Charge	None

Full 94-98 12-Valve Injector Lineup

Not sure Stage 3 matches your build? See the full Dynomite Diesel lineup for the 1994-1998 second-gen 12-valve:

Avoid These Common Mistakes

Installing Stage 3 injectors without a modified P-pump and upgraded turbo. Both are explicitly required. Running this fuel level without the supporting system will not produce the expected results and can cause engine damage.
Ordering Stage 3 when the build target is under 700 RWHP. The Stage 2 is the correct set for 550 RWHP builds. Stage 3 is a significant step up in fuel delivery and requires the full supporting system to match.
Skipping delivery valves. Dynomite highly recommends performance delivery valves at Stage 3 to fully realize the flow rate this injector set is capable of.
Ordering for a 1989-1993 or 1999+ 12-valve. These injectors are specific to the 1994-1998 second-gen 12-valve 5.9L Cummins. Verify your exact model year before ordering.

Before You Order

Truck is a 1994-1998 Dodge Ram 5.9L 12-valve Cummins
Modified P-pump confirmed in the build plan
Upgraded turbocharger confirmed in the build plan
Pump timing can be set to 20-22 degrees after installation
Shipping address is outside restricted states

All five confirmed? The DDP9498-3 is the correct Stage 3 injector set for your 700-750 RWHP second-gen 12-valve Cummins build.

Frequently Asked Questions

Click or tap a question below to expand the answer.

Do Stage 3 injectors require a modified P-pump?

Yes. A modified P-pump is explicitly required for Stage 3 injectors. An upgraded turbocharger is also required. Running Stage 3 fuel delivery without both supporting modifications in place will not produce the intended results and risks engine damage. If either component is still stock, the Stage 2 is the correct injector set until the build is ready.

What is the difference between Stage 2 and Stage 3?

Stage 2 supports up to 550 RWHP and can be used with an upgraded turbo but does not require a modified P-pump. Stage 3 supports 700-750 RWHP, flows 56 LPM versus Stage 2's 48 LPM, and requires both a modified P-pump and an upgraded turbocharger. Stage 3 is also the largest injector set Dynomite recommends for a truck that will see regular street use.

Do I need delivery valves with Stage 3 injectors?

Dynomite Diesel highly recommends upgrading to performance delivery valves when running Stage 3 injectors. At 56 LPM flow, the delivery valves help the system take full advantage of the injector's capacity. You can order the Dynomite Diesel delivery valves alongside this set.

What timing do DDP9498-3 Stage 3 injectors require?

Dynomite Diesel recommends 20-22 degrees timing for the Stage 3 set - notably higher than Stage 2 at 18-19 degrees and Stage 1 at 17-18 degrees. Confirm your injection pump timing is within that range after installation.

Will these injectors fit a 1994-1998 second-gen 5.9L Cummins?

Yes. These injectors are specific to the 1994-1998 Dodge Ram 5.9L 12-valve Cummins (second-gen platform). They are not compatible with the 1989-1993 first-gen or 1999+ applications. Verify your exact model year before ordering.

Is Stage 3 the largest street-use injector in the DDP 94-98 lineup?

Stage 3 is the largest injector set Dynomite Diesel recommends for frequent street use on the 1994-1998 12-valve platform. A Stage 4 set is also available for builds going beyond 750 RWHP, but Stage 3 is the top of the street-use recommendation for this application.