Driving Innovation In Diesel Performance

Stage 2 Heads. Built for Cummins.

Stage 2 Performance heads take it up a notch with a billet intake manifold, thread-in soft plugs, titanium retainers, and extra-large intake seats.

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From $5,669.99
VP44 Stage 2 24v Cummins Performance Head

VP44 Stage 2 24v Cummins Performance Head

  • Includes Stage 2 VP44 billet intake manifold
  • Heavy-duty extra-large intake seats to address stock seat issues
  • Thread-in soft plugs under valve cover for reliability
  • Assembled with 115# springs + titanium retainers
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From $5,669.99
P-Pump Stage 2 24v Cummins Performance Head

P-Pump Stage 2 24v Cummins Performance Head

  • Includes Stage 2 P-Pump billet intake manifold
  • Heavy-duty extra-large intake seats to address stock seat issues
  • Thread-in soft plugs under valve cover for reliability
  • Assembled with 115# springs + titanium retainers
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From $5,669.99
2003+ CR Stage 2 Cummins 5.9 Performance Head

2003+ CR Stage 2 Cummins 5.9 Performance Head

  • Replacement-style D&J billet intake manifold included
  • Heavy-duty extra-large intake seats to address stock seat issues
  • Thread-in soft plugs under valve cover for reliability
  • Assembled with 115# springs + titanium retainers
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Price $5,669.99
2007.5+ CR Stage 2 Cummins 6.7 Performance Head

2007.5+ CR Stage 2 Cummins 6.7 Performance Head

  • Replacement-style D&J billet intake manifold included
  • Heavy-duty extra-large intake seats to address stock seat issues
  • Thread-in soft plugs under valve cover for reliability
  • Assembled with 115# springs + titanium retainers
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How the Stage 2 Cummins Head Is Built

Take a look at the step by step process to build the best Cummins head on the market.

KNOWLEDGE HUB

Everything you need to know about D&J Cummins stage 2 cylinder heads.

Stage 2 is for the power seeker who wants more airflow and better cylinder-to-cylinder consistency. The included billet intake is built to keep factory components (MAP sensor, air horn, TPS) while promoting more even air distribution to help prevent hotspots—an important detail on harder-driven trucks.

  • Stage 2 Includes Billet Intake Replacement-style D&J billet intake manifold is included for improved distribution and a cleaner performance setup.
  • Heavy-Duty Intake Seats Extra-large intake seats are designed to address the stock seat failure issue seen in high-horsepower applications.
  • Thread-In Soft Plugs Thread-in soft plugs under the valve cover help prevent coolant loss issues from soft plug failures.
  • Titanium Retainers + 115# Springs Assembled with 115# valve springs and titanium retainers for better valve control in demanding builds.
  • 5-Axis CNC Porting Precision 5-axis CNC porting is performed for improved airflow and efficiency.

FAQs

What is a Stage 2 Cummins cylinder head?
Stage 2 includes all Stage 1 features plus a billet intake manifold, thread-in soft plugs, titanium retainers, and heavy-duty intake seats.
What’s the difference between Stage 1 and Stage 2 heads?
Stage 2 adds the D&J billet intake and additional durability upgrades for higher-demand power and reliability goals.
Do Stage 2 heads come with an intake manifold?
Yes, Stage 2 includes a replacement-style D&J billet intake manifold.
Will the billet intake keep my factory MAP sensor and air horn?
Yes, the billet intake is designed to keep the factory MAP sensor, air horn, and throttle position sensor.
Do Stage 2 heads help with valve seat issues?
Yes, Stage 2 uses heavy-duty extra-large seats to address the stock seat failure problem in high-output setups.
What valve springs come on Stage 2 heads?
Stage 2 heads are assembled with 115# valve springs and titanium retainers.
Do Stage 2 heads include thread-in soft plugs?
Yes, thread-in soft plugs are installed under the valve cover for improved reliability.
How much airflow does Stage 2 add?
The product pages state intake flow increases to 250 CFM compared to 165 CFM stock (varies by setup).