
Dodge Ram Cummins 6.7L Fuel Injector 2008-2010: OEM 5253221NX ( Set of 6 )
DODGE RAM CUMMINS 6.7L FUEL INJECTOR 2008-2010: OEM 5253221NX ( SET OF 6 )

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY
WARRANTY
1M MILES OR 1 YEAR
PRODUCT DESCRIPTION
This is a Remanufactured Bosch Fuel Injector, Bosch part number DE803-SET ( OEM Part Number 5253221NX ). 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 Dodge Ram Cummins 6.7L, production years 2008-2010, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here
OEM NUMBERS
Primary OEM | 5253221NX |
Additional OEM | 4940096NX, 5253221NX |
ADDITIONAL DETAILS
CONDITION | Remanufactured |
UPC / Barcode | |
WEIGHT | 8.40 LBS |
SHIPPING OPTIONS
Ship Weight : 8.40 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.
Designed for precision and reliability, the Dodge Ram Cummins 6.7L Fuel Injector Set (OEM 5253221NX) for 2008–2010 includes six high-quality injectors built to deliver accurate fuel flow for efficient engine working conditions. Engineered specifically for the 6.7L Cummins engine, these injectors support smooth combustion and consistent operation across a range of heavy-duty applications. Each unit is rigorously tested and inspected to meet strict industry standards, offering a dependable replacement solution. Ideal for maintaining long-term engine durability, this set ensures continued efficiency under demanding conditions.
FITMENT CHART
YEAR | MAKE | ENGINE(S) | ||||
---|---|---|---|---|---|---|
2008 | Dodge Ram | Cummins 6.7L | ||||
2009 | Dodge Ram | Cummins 6.7L | ||||
2010 | Dodge Ram | Cummins 6.7L |
PEOPLE ALSO ASKS | BLOG(S)
The Dodge Ram Cummins 6.7L engine, renowned for its durability and efficiency, relies heavily on its fuel injectors to maintain optimal durability. The OEM 5253221NX set of 6 fuel injectors, designed specifically for the 2008-2010 models, plays a crucial role in the engine’s fuel delivery system.
How It Works
Fuel injectors are responsible for delivering precise amounts of fuel into the combustion chamber. The OEM 5253221NX injectors ensure that each cylinder receives the right fuel mixture, promoting efficient combustion and reducing emissions.
Key Features:
- Precision Engineering
- Ensures accurate fuel delivery for each combustion cycle.
- Durable Construction
- Made to withstand high pressures and temperatures typical in diesel engines.
- Compatibility
- Specifically designed for Dodge Ram Cummins 6.7L engines from 2008 to 2010.
- Efficient Fuel Atomization
- Enhances fuel-air mixture for better combustion efficiency.
- Easy Installation
- Designed for straightforward replacement without extensive modifications.
Maintaining the fuel injectors is essential for the longevity and reliability of your Dodge Ram Cummins engine. Regular checks and timely replacements with OEM 5253221NX injectors can help prevent common issues such as rough idling, decreased fuel efficiency, and increased emissions.
A clogged fuel injector can lead to a variety of issues in your vehicle, affecting its overall efficiency. Fuel injectors are designed to deliver a precise amount of fuel into the engine, and any blockage can disrupt this process. Recognizing the symptoms early can help prevent further damage.
Common signs of a clogged fuel injector include:
- Rough idling
- The engine may feel unsteady or shaky when the vehicle is idle.
- Engine misfires
- You may notice that the engine struggles to maintain a consistent rhythm, especially when accelerating.
- Poor fuel consumption
- The vehicle may use more fuel than normal due to inefficient combustion.
- Starting difficulties
- A clogged injector can make it hard to start your engine, particularly in colder weather.
- Increased exhaust emissions
- A blocked injector may cause incomplete combustion, leading to higher emission levels.
If you notice any of these symptoms, it’s essential to address the issue promptly. Ignoring a clogged fuel injector can lead to more significant engine problems. Regular maintenance and cleaning of your fuel injectors can help ensure smooth operation and extend the life of your vehicle.
Yes, a single faulty injector can cause rough idling, misfires, and poor fuel economy.
Yes, high return flow is a strong indicator of internal injector wear or leakage.
Contaminated fuel, excessive heat, improper installation, or failure to replace connector tubes can all cause early failure.
It’s recommended to check every 100,000 miles or sooner if drivability issues arise.