Yes, 24-valve Cummins engines are still considered very good engines, especially for those seeking durability, torque, and tunability. Here’s a quick breakdown of why:
✅ Why They’re Still Good:
- Proven Reliability – Especially the early 5.9L 24-valve (1998.5–2007) models, known for lasting hundreds of thousands of miles with proper maintenance.
- Strong Performance – Great torque output makes them excellent for towing and heavy-duty use.
- Aftermarket Support – Huge support for tuning, performance upgrades, and repairs.
- Simple (older models) – The VP44 (1998.5–2002) and early common rail (2003–2007) systems are more user-friendly than newer emissions-heavy engines.
⚠️ What to Watch For:
- VP44 Injection Pump Failures (1998.5–2002)
- Lift Pump Issues
- Emission Components on 6.7L Models (EGR, DPF) can be costly or problematic
- Head gasket and turbo concerns under high boost (especially tuned)
💡 Verdict:
If you’re looking for a strong diesel workhorse, a 24-valve Cummins — particularly the 5.9L common rail (2003–2007) — remains a top choice. Newer 6.7L models are also good but come with more emissions complexity.
Also Read: 24 valves Engine guide.
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