Brand New Cummins ISX Camshaft – Part #3683658

Restore top-end performance and valve timing precision with this brand-new 3683658 camshaft, engineered for the Cummins ISX engine platform. Whether you’re rebuilding a dual overhead cam (DOHC) or single cam (SOHC) ISX engine, this camshaft offers OEM-level performance, oil flow precision, and durability required for high-mileage applications.

Made from premium hardened steel, this camshaft ensures optimal valve lift and duration, reducing wear and improving combustion efficiency. Ideal for both shop rebuilds and inframe repairs.

Key Features:

• OEM Replacement: Direct replacement for Cummins ISX Camshaft Part #3683658

• High-Strength Construction: Built from hardened steel for superior fatigue and wear resistance

• Exact Timing Control: Precision-ground lobes for proper intake/exhaust valve operation

• Ready to Install: No core charge, no reman—completely new component

• Compatible with DOHC & SOHC ISX Engines: Fits most ISX configurations—verify by ESN before ordering

Engine Compatibility:

• Cummins ISX DOHC (Dual Overhead Cam)

• Cummins ISX SOHC (Single Overhead Cam)

• Fits most ISX applications across Class 8 trucks (Freightliner, Peterbilt, Kenworth, International)

Application Notes:

• Check for cam lobe wear or spalling if you’re experiencing rough idle, misfires, or reduced power

• Always pair with new cam bearings and followers when installing a new camshaft

• Verify compatibility by Cummins ESN (Engine Serial Number) before ordering

Why Choose HDKits?

At HDKits, we provide brand-new Cummins engine components backed by technical expertise and fast shipping. Unlike reman or core-exchange units, our camshafts are 100% new and precision-machined—delivering longer service life and reliability.

Brand New, No Core
Fast USA Shipping
Trusted by Diesel Techs & Fleets Nationwide

FAQs

Q1: Is this camshaft new or remanufactured?
This is a brand-new camshaft—not remanufactured and requires no core return.

Q2: Will this camshaft fit both SOHC and DOHC ISX engines?
Yes, it is designed for use in most Cummins ISX SOHC and DOHC engines. However, confirm fitment by providing your engine serial number (ESN) before purchasing.

Q3: Do I need to replace the cam followers and bearings too?
Yes, it’s highly recommended to replace cam followers, bearings, and rockers to avoid premature wear on the new camshaft.