Description
Cummins ISX Valve Camshaft – Part Number: 4059331
Why Choose Our New Valve Camshaft for the Cummins ISX Dual Cam?
Restore lost power and performance to your Cummins ISX engine with the premium 4059331 valve camshaft from Highway and Heavy Parts. Engineered specifically for ISX Dual Cam (DOHC) configurations, this precision-forged camshaft features 42.68″” length, 12 valve lobes, 6 injector lobes, and 7 journals manufactured to exceed OEM specifications. Constructed from forged billet steel—not cast iron—this camshaft delivers superior durability with 55rc hardness rating for maximum wear resistance. Every component is brand new with zero core charge required, eliminating the uncertainties associated with remanufactured alternatives.
IMPROVE PERFORMANCE AND EXTEND THE LIFE OF YOUR DIESEL ENGINE
HHP’s Valve Camshaft for the Cummins ISX produces significantly higher performance levels than worn OE components while restoring your diesel engine’s operational efficiency. Research demonstrates that horsepower can decrease up to 20% with a worn camshaft compared to a new unit, while valve timing can shift as much as 3 degrees with just .001″” of camshaft wear. Our precision-engineered replacement camshaft restores optimal valve timing, injection timing, and engine performance. Manufactured by trusted OEM suppliers in ISO 9001 certified facilities using rigorous quality control processes, this camshaft meets or exceeds all OEM specifications for duration, lift, and hardness.
Experiencing symptoms like loss of engine power, rough idle, unusual engine noise, or poor fuel economy in your Cummins ISX? A new valve camshaft from HHP delivers the comprehensive solution needed to restore your engine to like-new performance specifications.
Advanced Forged Billet Steel Construction
The 4059331 valve camshaft features advanced forged billet steel construction that delivers exceptional strength and durability compared to traditional cast iron camshafts. This superior manufacturing process creates a denser molecular structure with enhanced wear resistance, superior heat dissipation, and improved structural integrity under extreme operating conditions. With a precision hardness rating of 55rc, this camshaft provides maximum resistance to lobe wear and maintains proper valve timing throughout extended service intervals.
Precision-Engineered Specifications for ISX Dual Cam Applications
Designed specifically for Cummins ISX15, QSX15, ISG12, and ISGe diesel engines, the 4059331 valve camshaft incorporates exact specifications for flawless performance:
- 42.68″” overall length with tapered design
- M12 x 12.5 thread configuration
- 7 precision-ground journals (2.5585-2.5596″” diameter)
- 12 valve lobes with 20mm width for optimal valve actuation
- 6 injector lobes for precise fuel injection timing
- Recommended journal oil clearance: .0020-.0050″”
- Maximum cam end play: .0276″”
Each dimension is precision-machined to exact tolerances, ensuring perfect fitment and optimal performance in ISX Dual Cam configurations without modifications or adjustments.
Compatible OEM Cross-References
The 4059331 valve camshaft replaces multiple Cummins OEM part numbers including 4298626, 3680779, 4059170, and 3680799. This broad compatibility ensures correct application across various ISX engine builds and serial number ranges. Compatible with ISX engines featuring CPL numbers including 2630, 2732, 2733, 2834, 2919, 3229, 8283, and 8285, among many others. When in doubt, our ASE-certified technicians can verify compatibility using your engine serial number (ESN) before shipment.
Why Choose New Components Over Remanufactured Camshafts?
A new 4059331 valve camshaft offers distinct advantages over remanufactured alternatives: brand-new forged billet steel construction with no previous wear history, engineered to exceed OEM specifications for duration and lift, superior 55rc hardness rating for extended wear resistance, and no core charge required since it’s a complete new part. While remanufactured camshafts can provide acceptable value, the new camshaft ensures maximum reliability and performance restoration for critical ISX engine applications where dependable operation is essential. With worn camshaft lobes causing up to 20% horsepower loss and valve timing shifts that compromise fuel economy and emissions compliance, investing in new components provides long-term value and peace of mind.
Professional Installation and Technical Support
Installing the 4059331 valve camshaft requires proper timing procedures and specialized tools to ensure correct valve and injection timing. Professional installation is strongly recommended due to the complexity of ISX dual cam timing procedures and the critical need for precise measurement of camshaft journal clearances. Proper installation includes checking bearing clearances, setting timing marks accurately, and following Cummins torque specifications to ensure optimal performance and longevity of your ISX engine. The camshaft undergoes detailed inspection prior to packaging and ships well-protected for safe, secure delivery.
Every 4059331 Cummins ISX Valve Camshaft comes with comprehensive technical support from our team of ASE-certified diesel technicians who provide expert guidance throughout the entire process—from initial compatibility verification through final installation procedures and post-installation troubleshooting. With extensive technical knowledge, superior quality products, industry-leading shipping capabilities, and unbeatable customer service, HHP stands as your trusted partner for Cummins engine components.
Frequently Asked Questions – Cummins ISX Valve Camshaft
What is included with the Cummins ISX valve camshaft part number 4059331?
The 4059331 valve camshaft is a complete replacement component featuring forged billet steel construction with precision-ground journals, 12 valve lobes, 6 injector lobes, and tapered design with M12 x 12.5 thread configuration. The camshaft measures 42.68″” in length and includes all specifications necessary for proper ISX Dual Cam (DOHC) engine operation. This is a brand-new component with no core charge required, eliminating additional fees and waiting periods associated with core returns.
How does this new ISX camshaft compare to OEM or remanufactured camshafts?
This aftermarket Cummins ISX valve camshaft meets or exceeds OEM specifications while costing significantly less than dealer parts. Constructed from forged billet steel rather than cast iron, it features superior 55rc hardness rating for maximum wear resistance and extended service life. The camshaft is engineered to exceed OEM specifications for duration, lift, and hardness, delivering enhanced performance compared to standard components. Unlike remanufactured camshafts with unknown wear histories, this new unit provides maximum reliability without previous service concerns.
What are symptoms indicating my Cummins ISX valve camshaft needs replacement?
Common symptoms indicating valve camshaft replacement needs include noticeable loss of engine power, rough idle conditions, significantly reduced fuel economy, unusual engine noise or knocking sounds, misfiring cylinders, and decreased compression readings. Worn camshaft lobes cause improper valve timing, leading to decreased performance and potential progressive engine damage. Research shows horsepower can decrease up to 20% with worn camshafts, while valve timing can shift as much as 3 degrees with minimal .001″” camshaft wear, dramatically affecting engine efficiency and emissions compliance.
Is professional installation required for the 4059331 valve camshaft?
Professional installation is strongly recommended for the 4059331 valve camshaft due to the complexity of ISX dual cam timing procedures and critical measurement requirements. Proper installation requires specialized tools, precise timing procedures, accurate journal clearance measurements, correct timing mark alignment, and adherence to Cummins torque specifications. Improper installation can result in catastrophic engine damage, incorrect valve timing, poor performance, and premature component failure. Our ASE-certified technicians provide comprehensive installation support and guidance throughout the process.
Which Cummins engines are compatible with the 4059331 valve camshaft?
The 4059331 valve camshaft is designed for Cummins ISX Series engines including ISX15, QSX15, ISG12, and ISGe diesel engines configured with dual overhead cam (DOHC) designs. Compatible with engines featuring CPL numbers including 2630, 2732, 2733, 2834, 2919, 3229, 8283, 8285, and many others. This camshaft replaces OEM part numbers 4298626, 3680779, 4059170, and 3680799 across various ISX engine serial number ranges and production years from 1997-2016. Contact our ASE-certified technicians for compatibility verification using your specific engine serial number.
