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Cummins ISX Camshaft 1999-2010: OEM 3683658

CUMMINS ISX CAMSHAFT 1999-2010: OEM 3683658

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$1,195.00

CORE CHARGE:

$250.00
iCORE DISCLAIMER: The CORE charge is a 30 day hold and will not be processed as long as the CORE is returned within 30 days. If you do not have a CORE or fail to return the CORE within 30 days, the CORE charge hold amount will be processed at that time.

AVAILABILITY IN STOCK
OEM NUMBER3683658
PART TYPECamshaft
BRANDTamerx Diesel Products
ENGINE MAKECummins
ENGINE TYPEISX
YEAR1999-2010
PART NUMBER9602RM
APPLICATION NOTESCM870, CM871

PRODUCT DESCRIPTION

This is a Remanufactured Tamerx Camshaft, Tamerx part number 9602RM ( OEM Part Number 3683658 ). All parts are proudly remanufactured in the U.S.A. to the highest of OEM standards, and improvements are often applied to the original design in the remanufacturing process. This part is primarily made for a Cummins ISX, production years 1999-2010, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

OEM NUMBERS

Primary OEM3683658
Additional OEM3683658, 3684306

ADDITIONAL DETAILS

CONDITIONRemanufactured
UPC / Barcode00840490537842
WEIGHT36.00 LBS

SHIPPING OPTIONS

Ship Weight : 36.00 LBS
UPS Ground, 2nd Day Air, Next Day Air

SHIPPING POLICY

Tamerx Diesel Products ships via UPS Ground. Next day air shipping can be arranged for a reasonable price of anywhere from $50.00 - $100.00 depending on the weight of the product and your location. We will do everything we can to make sure that you get the service you need. We understand how important it is to receive your order as quickly as possible.
In most cases Tamerx Diesel Products only needs one address, as long as your product is shipping to the same location as your billing information. In order to eliminate credit card fraud, your billing information must match the credit card you provide.

The terms, conditions, and details of our warranty vary from product to product. Specific warranty details can be found below.

Tamerx Diesel Products provides a replacement warranty on all of our parts. The duration and mileage limitations of the warranty vary by product and are specified on the product's detail page/item listing.

Please note that the warranty covers replacement of the part and the cost of shipping the replacement part to you only. It does not cover any shop, labor, towing, or any similar or related costs. This is not a "money back guarantee".

If you experience a problem with your part or it is not functioning properly, the correct warranty procedure is to call us at (510) 257-1777 (8:00 AM - 5:00 PM ET Monday through Friday). Be sure to have your order number and/or other relevant order information ready so we can easily locate your order and resolve your issue as quickly as possible. From that point, we will review with you any troubleshooting steps that may need to be taken and other areas or systems that can be checked to rule out external problems contributing to your part's issue. If a replacement is determined to be necessary, we will then arrange for your replacement part to ship out ASAP and issue any necessary return shipping labels and/or documents.

As is the case for the majority of the diesel products sold on Tamerx Diesel Products, your part's warranty is active as soon as you install it. In some other cases, warranty activation is contingent upon you sending us your core (i.e., your old part). Tamerx Diesel Products will provide you a return shipping label for parts that have a warranty with a core return condition. When we have received your core return, the part's warranty coverage begins. We reserve the right to void the product warranty if your core is not received within the allotted time, or if it isn't received at all. If the warranty for the diesel part you are purchasing has a core return requirement, it will be clearly noted on the product detail page/item listing.

What is a Core Charge?

A core charge (also called "core deposit") is similar to the deposit you might pay for a can or bottle of soda and is a standard requirement in the auto parts industry. For example, in many states, to promote recycling, you pay a deposit when you purchase a can of soda and receive your deposit back when you return the empty can. Many automotive parts have a core charge, or core price, that works in essentially the same way as a soda can deposit.

30 Day Core Charge Hold

You authorize Tamerx Diesel Products, to hold your credit card for the specified core charge amount and that you agree to return your core with 30 days of receiving the purchased part. When we have received your core return, the hold is released and the core charge payment is canceled.

The customer, or parts buyer, is responsible for any shipping costs associated with core returns unless otherwise specified in the product listing/detail page. Tamerx Diesel Products offers prepaid UPS shipping labels (SKU numbers UPS-CR1 and UPS-CR2) for use in returning your core that are available for purchase on our website during your shopping/order process.

The shipping label you will need to use for the core return is dependent upon what part you are purchasing. UPS-CR1 is good for cores weighing up to 20 pounds. UPS-CR2 is appropriate for shipping cores weighing 21 pounds or more. You must include enough information with the core return that clearly identifies it as a.) a Core Return, and b.) contains enough information we can use to clearly associate the core return with your order. Including a copy of the invoice or packing slip that came with the original shipment, clearly marked "Core Return", is ideal. Alternately, you can include a note marked as "Core Return" that includes your order number, full name and address, and phone number or other contact information. Failure to include this information with your returned core will most likely delay any due core credit being issued and/or delay any applicable warranty activation. Core returns need to be for the exact part purchased and cannot be damaged. Substituting another part in place of the part you have purchased is not acceptable.

All fluids must be drained.

If you have purchased a set or a parts package, you will need to return cores for all components of the set. For example, if you have purchaed a high pressure oil pump with an IPR valve, you will need to return both HPOP and IPR valve cores to receive proper credit. If you have purchased an EGR cooler/EGR valve package, your core return must consist of an EGR cooler core and an EGR valve core, or core credit will not be given.

Core Charges are often mandated by state legislature, and, as such, the actual core charge and taxes on the charge may vary depending on the state in which you buy your part. The Tamerx Diesel Products core charge presented to you online today with your item is representative of the most common core charge.


Unleash peak performance and precision timing with the Cummins ISX Camshaft (OEM 3683658), designed for 1999–2010 ISX engines. Crafted to exact OEM tolerances, this camshaft delivers smooth valve operation, robust durability, and restored engine efficiency—perfect for regaining the power and reliability you depend on. Engineered for a straightforward swap-in install, it’s the ideal upgrade for keeping your ISX running strong, mile after mile.

FITMENT CHART

YEARMAKEENGINE(S)
1999Cummins ISX
2000Cummins ISX
2001Cummins ISX
2002Cummins ISX
2003Cummins ISX
2004Cummins ISX
2005Cummins ISX
2006Cummins ISX
2007Cummins ISX
2008Cummins ISX
2009Cummins ISX
2010Cummins ISX

PEOPLE ALSO ASKS | BLOG(S)

When it comes to maintaining the reliability of your Cummins ISX engine (1999–2010), precise valve timing is non-negotiable. That’s why the OEM 3683658 camshaft stands out—it’s engineered to exact factory specifications, ensuring that your engine’s intake and exhaust valves fire in perfect sync with every cycle. Investing in an OEM camshaft from Tamerx Diesel Products means choosing durability, fitment accuracy, and long-term performance.

  • Factory-Spec Timing Precision
    The OEM 3683658 camshaft is crafted to match Cummins’ original design, preserving ideal valve timing and ensuring combustion stability and consistent idle quality.

  • Durable Construction for Heavy-Duty Use
    Forged from high-grade materials, this camshaft resists wear and distortion even under demanding loads. Its resilience supports sustained valve train performance over extended mileage.

  • Seamless Fit for ISX Engines (1999–2010)
    Tailored specifically for Cummins ISX engines built between 1999 and 2010 (models CM870 and CM871), this camshaft guarantees perfect compatibility and eliminates fitment guesswork.

  • Restore Engine Efficiency & Smoothness
    A worn or mismatched camshaft can lead to misfires, rough idling, or poor fuel atomization. Replacing it with OEM 3683658 reestablishes precise injector timing and revives smooth throttle response and overall engine harmony.

  • Backed by Warranty for Peace of Mind
    Tamerx Diesel Products remanufactures this camshaft in the U.S.A. to exceed OEM standards and backs it with an impressive warranty—either one year or one million miles, whichever comes first.

  • Core Charge Simplicity
    A core charge refund is easy—return your old camshaft within 30 days to release the hold. Tamerx even provides prepaid UPS labels to simplify the return process.

For anyone rebuilding or maintaining a Cummins ISX engine from 1999 to 2010, the OEM 3683658 camshaft is a cornerstone part you can’t compromise on. At Tamerx Diesel Products, this camshaft isn’t just about matching specs—it’s about ensuring your engine runs with the timing precision it was built for, mile after mile. Trust in OEM quality, enjoy fewer worries, and keep your engine performing at its best.

The camshaft is a vital component in any internal combustion engine. It controls the timing and operation of the intake and exhaust valves, ensuring fuel and air flow properly through the cylinders. If the camshaft begins to fail or becomes damaged, it can have serious consequences for engine function. While the vehicle may still start and run, driving with a bad camshaft is a risky move that can lead to further mechanical damage and safety concerns.

Signs You May Be Driving with a Faulty Camshaft

  • Engine Misfires or Rough Idling
    A failing camshaft can throw off the timing of the valve operation, causing irregular combustion and noticeable misfires or rough engine performance.

  • Decreased Engine Power
    You may notice sluggish acceleration or difficulty maintaining speed due to improper valve timing and poor air-fuel mixture regulation.

  • Loud Ticking or Tapping Noises
    Worn cam lobes or lifters can cause abnormal noises from the top of the engine, often heard as a ticking sound that worsens with RPM.

  • Check Engine Light
    Modern vehicles are equipped with sensors that monitor camshaft position. A failing camshaft or camshaft position sensor often triggers the check engine light.

  • Metal Shavings in Oil
    A damaged camshaft can shed metal into the engine oil, indicating severe wear. This is often a sign of an impending failure that could affect other internal components.

Risks of Continuing to Drive

  • Further Engine Damage
    Continued operation can damage lifters, rocker arms, or even the crankshaft due to improper timing and excessive wear.

  • Loss of Compression
    A severely worn camshaft may not open valves fully, leading to poor compression and reduced combustion efficiency.

  • Complete Engine Failure
    In extreme cases, a broken camshaft can result in catastrophic engine failure, leaving the vehicle inoperable and requiring a full engine rebuild or replacement.

While your vehicle may technically be drivable with a bad camshaft, it’s not advisable. Ignoring early warning signs can escalate into major mechanical issues, safety risks, and expensive repairs. If you suspect camshaft problems, it’s best to have the engine inspected by a qualified technician immediately to prevent further damage.

Use a gentle degreaser and soft brush to clean the shaft, avoiding chemicals that can corrode hardened cam surfaces.

Worn lobes can lead to poor valve control, increased emissions, reduced fuel efficiency, and valve or piston collision.

Mis-timed valve actuation can overload springs, rocker arms, and lead to excessive wear on engine components.

Degraded or contaminated oil fails to properly lubricate cam lobes and bearings, accelerating wear.

Cummins Camshafts

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