INJECTABLES — 1989–1993 DODGE RAM 5.9L CUMMINS (12-VALVE)

Unlock controllable power and cooler EGTs with CPP Diesel’s curated injectables: water–methanol injection, diesel nitrous kits, propane systems, intercooler sprayers, controllers, reservoirs, lines & fittings sized for First-Gen 1989–1993 D250/D350.

Shop by Subcategory

• INJECTABLES (’89–’93 HUB) — current 1st-Gen landing page.
• WATER–METHANOL SYSTEMS — universal Nitrous Express water-meth kits & parts.
• DIESEL NITROUS SYSTEMS — Nitrous Express kits, solenoids, jets & accessories.
• PROPANE INJECTION — tanks, valves & plumbing options.
• INTERCOOLER SPRAYER KITS (CryO₂) — CO₂/water sprayers & related hardware.
• MONITORING & SAFETY (GAUGES) — EGT, boost & fuel pressure to tune safely.

Featured for 1st Gen

• Nitrous Express Water–Methanol Systems — progressive control, reservoirs & nozzles.
• Nitrous Express Diesel Nitrous Kits — universal diesel applications with jets/solenoids.
• Scheid Diesel Water Injection Kit (’89–’18 coverage) — proven EGT management.
• DEI CryO² Intercooler Sprayer (universal) — rapid IAT drop on demand.
• Gauges & Mounts — pair injectables with EGT/boost/fuel pressure monitoring.

Why Buy from CPP Diesel

• First-Gen focus: We prioritize 1989–1993 fitment, routing and serviceability.
• Trusted brands: Nitrous Express, DEI CryO², Scheid Diesel, CPP in-house.
• Expert support: Help sizing nozzles/jets, setting start/stop PSI, and routing lines safely.
• Fast shipping: Popular kits and controllers ship quickly from U.S. warehouses.

Explore the full 1989–1993 Cummins catalog for complementary upgrades.

Helpful Notes

• Monitoring: Install EGT, boost, and fuel pressure gauges before tuning injectables.
• Water–meth basics: Start conservative, verify AFR/EGT trends, and use filtered fluid; mount tanks and pumps away from heat.
• Nitrous setup: Use a dedicated fuel/nitrous safety strategy and progressive control to manage ramp-in.
• Propane: Route lines per manufacturer guidance and leak-check with an approved method before operation.
• Legal: Some products are race/off-road only. Check local laws and emissions rules before purchase/installation.

Frequently Asked Questions

What injectables make the most sense on a mostly stock 1st-Gen?

Water–meth is the usual first step for towing and street builds thanks to EGT control and modest power gains. Pair with EGT/boost gauges.

Is nitrous safe on a VE-pump 12-valve?

Yes when used conservatively with proper fueling and monitoring. Start small, use progressive control, and watch EGT/boost closely.

Do these kits bolt on to 1989–1993 trucks?

Most kits are universal. They fit 1st-Gens with straightforward plumbing, wiring, and mounting. We can help you choose nozzle/jets and tank placement.

Can I run water–meth and an intercooler sprayer together?

Yes—many owners use a small water–meth nozzle plus a CryO² sprayer for short pulls, keeping EGT and IAT under control.

What should I monitor when using injectables?

EGT first, then boost and fuel pressure. Set alerts and verify temps under load after each change.