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Cummins N14 Cylinder Head 1996-2003: OEM 3411812

CUMMINS N14 CYLINDER HEAD 1996-2003: OEM 3411812

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$895.00

CORE CHARGE:

$500.00
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 NUMBER3411812
PART TYPECylinder Head
BRANDTamerx Diesel Products
ENGINE MAKECummins
ENGINE TYPEN14
YEAR1996-2003
PART NUMBER855-400-7RM
APPLICATION NOTESCPL# 1405, 1445, 1507, 1530, 1532, 1533, 1534, 1535, 1536, 1537, 1538, 1572, 1573, 1574, 1575, 1580, 1583
ADDITIONAL NOTESScalloped Face Horizontal Bolt pattern on Exhaust port

PRODUCT DESCRIPTION

This is a Remanufactured Tamerx Cylinder Head, Tamerx part number 855-400-7RM ( OEM Part Number 3411812 ). 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 N14, production years 1996-2003, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

Additional Notes: Scalloped Face Horizontal Bolt pattern on Exhaust port

OEM NUMBERS

Primary OEM3411812
Additional OEM3055288, 3070485, 3070504, 3076209, 3406737, 3411812

ADDITIONAL DETAILS

CONDITIONRemanufactured
UPC / Barcode
WEIGHT96.00 LBS

SHIPPING OPTIONS

Ship Weight : 96.00 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.


The Cummins N14 Cylinder Head (OEM 3411812) for 1996–2003 engines is a factory-built replacement designed to restore proper airflow and combustion efficiency. Manufactured to Cummins’ strict specifications, this cylinder head provides the accuracy and reliability needed for heavy-duty applications. Its OEM design ensures a direct fit, making installation straightforward without modifications. Constructed from durable materials, it is engineered to withstand the demands of long-term use while maintaining consistent engine performance. For keeping your N14 engine operating at factory standards, this cylinder head is a trusted replacement choice.

FITMENT CHART

YEARMAKEENGINE(S)
1996Cummins N14
1997Cummins N14
1998Cummins N14
1999Cummins N14
2000Cummins N14
2001Cummins N14
2002Cummins N14
2003Cummins N14

PEOPLE ALSO ASKS | BLOG(S)

The OEM 3411812 cylinder head is engineered for the Cummins N14 engine, covering model years 1996 through 2003. This head serves as the engine's combustion chamber lid, housing crucial components like valves, injectors, and combustion pathways, ensuring efficient air/fuel flow and sealing integrity.

Available in both remanufactured and new OEM versions, this cylinder head is built to original equipment specifications for durability and reliability. Remanufactured units are completely disassembled, cleaned, machined, and reassembled with new internals based on OEM design.

Key Specifications and Fitment Details:

  • Strong compatibility across numerous Cummins part numbers—including 3055288, 3070485, 3076209, 3406737, and the central 3411812 itself—offers flexibility in sourcing.

  • Known for its scalloped face and horizontal bolt pattern on the exhaust port, this design is specific to the N14 series.

This cylinder head is a key component in the Cummins N14 engine family, which includes variants like CELECT, CELECT Plus, Mechanical N14, and related configurations, all used in heavy-duty trucks, buses, and industrial applications.(

Replacement using the OEM 3411812 ensures precise fitment and longevity—ideal for restoring reliability and maintaining engine efficiency in real-world operations.

Replacing with the correct OEM 3411812 cylinder head ensures precise alignment, optimal combustion efficiency, and long-term durability in Cummins N14 engines. Whether you choose a fresh OEM unit or a remanufactured replacement, always verify the scalloped design and bolt pattern match your application. 

A faulty cylinder head can lead to serious engine issues if left unchecked. Knowing the warning signs early can save you from costly repairs. Here’s how to spot potential problems.

Common Symptoms

Look out for these indicators that may suggest a damaged or failing cylinder head:

  • White smoke from the exhaust
    • often linked to coolant leaking into the combustion chamber
  • Oil contamination
    • milky residue under the oil cap or in the dipstick
  • Overheating engine
    • caused by cracks or warping within the cylinder head
  • Loss of compression
    • resulting in rough idling and reduced efficiency

Diagnosis Methods

A mechanic may use several approaches to confirm the issue:

  • Visual inspection
    • for cracks, corrosion, or damage
  • Compression testing
    • to check cylinder sealing
  • Coolant system checks
    • to detect internal leaks
  • Leak-down testing
    • to pinpoint problem areas

If you suspect cylinder head damage, addressing it quickly is crucial. Professional testing ensures accurate diagnosis and helps prevent more severe engine problems down the road.

The Cummins N14 Cylinder Head OEM 3411812 is designed to fit Cummins N14 engines built between 1996 and 2003.

No, OEM 3411812 comes ready for installation without additional machining required.

Common signs include cracked heads, coolant leaks, or issues with engine compression.

Yes, OEM 3411812 is an original Cummins part built to factory specifications.

Cummins Cylinder Heads

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