BD Diesel Performance Cylinder Head (Stage 1) Dodge Ram 5.9L Cummins 2003-2007 (Without Fire Ring)

The 2003-2007 5.9 Stage 1 Cummins Performance Cylinder Head is designed to deliver increased airflow and durability without the added cost and complexity of an aftermarket intake. Featuring 105-pound valve springs and a 5-axis CNC port job, this head significantly boosts intake flow from 155 CFM to 220 CFM, improving low-end performance, reducing boost pressure, and lowering EGTs.

Product information

Built on the foundation of the HP Reman Head, it includes new bronze guides, oversized hardened seats, and a high-performance CNC valve job for enhanced longevity and efficiency. Manufactured by D&J Precision Machine, this cylinder head is a proven upgrade for both stock and performance-driven Cummins builds.

Specifications

• Manufacturer part number: DJPCH100026
• Engine family: Cummins
• Application years: 2003-2007
• Fuel type: Diesel
• Displacement: 5.9 Liter
• Sold as: Each
• Country of origin: CA

Application and ordering notes

• Performance Cylinder Head (Stage 1) Dodge Ram 5.9L Cummins 2003-2007 (Without Fire Ring)
• Additional supplier application details: 2003-2007 Dodge Ram 2500/3500
• Review the engine and cylinder-head application, assembly contents and installation requirements below.

Core charge

A $800.00 core charge applies. Review the core selection and return requirements before ordering; credit is subject to acceptance of the returned core.

Warranty

Supplier-listed warranty: 12-Months. Review the applicable coverage, exclusions and claim requirements.

Shipping and emissions information

Supplier statement: Not for sale on licensed California vehicles. Verify applicability to your exact vehicle and configuration before purchase.

Store shipping restriction: Not available for shipment to California.

Proposition 65 warning

CALIFORNIA WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov