2019-2024 Cummins 6.7L Stage 1 Performance Cylinder Head (DJPCH100103)

The Stage 1 Performance Cylinder Head is designed to increase airflow, boost efficiency, and enhance power while retaining the factory intake plenum for a seamless installation. Featuring 105-pound valve springs and a 5-axis CNC port job, this upgraded head improves intake flow from 155 CFM to 220 CFM, reducing boost pressure and lowering EGTs for better overall engine performance. With hardened valve seats, bronze guides, and a precision CNC valve job, this cylinder head is built for reliability and durability in high-performance and towing applications.

Part Number: DJPCH100103

• 5-Axis CNC Ported for Increased Flow: Enhances intake airflow from 155 CFM to 220 CFM for better throttle response and power
• 105-Pound Valve Springs: Handles higher boost and RPM without valve float
• Factory Intake Plenum Retained: Simplifies installation with OEM fitment and no modifications required
• Upgraded Hardened Valve Seats & Bronze Guides: Prevents valve seat failure and extends durability
• Fully Machined & Pressure Tested: Crack-checked, resurfaced, and assembled with new seals, soft plugs, and HD springs for maximum reliability

• Warranty: 12 months parts and 12 months labor
• Manufactured By: D&J Precision Machine

A refundable core charge applies to this product. The core deposit will be refunded once a complete, rebuildable core is returned within 30 days of receipt. Cores must be complete and serviceable per D&J Precision Machine requirements.

• Freight charges apply; this item ships LTL.
• Made-to-order; lead times vary. Contact us for current ETA.
• Not for sale on California-licensed vehicles per BD Diesel / D&J Precision Machine policy.