S300 single turbos, compound turbo kits, and high-flow exhaust manifolds for the 1998.5-2002 5.9L 24-valve Cummins - engineered by Diesel Power Source.
(7)
(1)
(2)
The 24V Cummins introduced electronic fuel injection (Bosch VP44) and a higher-flowing 24-valve cylinder head to the 5.9L platform. The VP44 delivers better fuel economy and quieter operation than the mechanical 12-valve, while the 24-valve head flows significantly more air. This makes the 24V an excellent platform for turbo upgrades - the engine can use every bit of additional airflow a DPS single turbo or compound kit provides.
The factory HX35W turbo served the 24V well at stock power levels, but it runs out of airflow quickly on any truck with modified fueling or tuning. DPS S300 single turbos flow nearly double the air of the factory turbo, and our compound kits deliver the widest powerband and biggest EGT reductions available for the 5.9L platform. Whether you are towing heavy, building street performance, or going full competition, DPS builds the turbo system to match.
S362 through S369, journal and ball bearing
Singles and compounds both reduce exhaust temps under load
Designed for 1998.5-2002 Dodge Ram 2500/3500
Higher-flowing head takes full advantage of turbo upgrades
S362 or S363 single turbo or entry-level compound kit (S362/S475). Quick spool, measurably cooler EGTs, excellent street manners. The 24-valve head takes full advantage of the improved airflow.
S366 or S369 single or mid-range compound (S363/73 over S475-S480). Stronger midrange and top-end airflow for trucks with modified fueling and tuning. Ball bearing recommended to close the spool gap on larger compressors.
Compound kits (S366 or S369 over S480). Full two-stage turbo systems for maximum airflow. Plan supporting mods: head studs above 45 PSI boost, transmission upgrades around 400 RWHP, aftermarket rods near 800 RWHP.
Ready to upgrade? Browse 24V S300 Turbos, 24V Compound Kits, 24V Exhaust Manifold, or call 801-930-8404 for sizing help.
The 24-valve introduced a superior cylinder head design with electronic fuel injection.
Major improvements over 12-valve:
Performance advantages:
For daily driving and towing: 24V offers better fuel economy, quieter operation, and smoother power delivery while still supporting 400-600 HP builds with proper turbo upgrades and supporting modifications.
Turbo choice depends on power goals and intended use.
For daily driving / moderate towing (350-450 HP):
For heavy towing / performance (450-550 HP):
For maximum builds (550-600+ HP):
24-valve specific advantages:
EGT improvements: 150-300°F depending on turbo choice and power level.
Stock turbo baseline:
After S366 single turbo + tuning:
After compound turbos + injectors:
Why EGT control matters:
Safe EGT guidelines for 24V trucks:
This platform is generally reliable with a few known weak points.
Injection system considerations:
Transmission issues:
Exhaust manifold cracking:
Grid heater relay:
Intercooler boots:
Overall reliability: With proper maintenance and quality fuel supply, these engines run 300k+ miles. The 24-valve cylinder head is extremely durable.
Absolutely; 24V makes excellent daily driver when properly modified.
Why 24V excels as daily driver:
Daily driving by modification level:
Mild (375-450 HP, S300 single, handheld tuner):
Moderate (450-550 HP, larger turbo, injectors, custom tune):
High performance (550-600 HP, compounds, full build):
Real-world daily experience:
24V offers better economy than 12V stock-for-stock and modified-for-modified.
Stock 24V baseline:
Mild mods (turbo upgrade, handheld tuner, 400 HP):
Moderate builds (500 HP, injectors, custom tune):
High-performance builds (550-600 HP):
Factors affecting fuel economy:
24V economy advantage: Electronic fuel control means better economy potential than 12V mechanical injection at similar power levels.
