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Cummins QSX15 Fuel Injector : OEM 5633476PX ( Set of 6 )

CUMMINS QSX15 FUEL INJECTOR : OEM 5633476PX ( SET OF 6 )

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$10,500.00

CORE CHARGE:

$2,100.00
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 NUMBER5633476PX
PART TYPEFuel Injector
BRANDCummins
ENGINE MAKECummins
ENGINE TYPEQSX15
YEAR
PART NUMBER5633476PX-SET

PRODUCT DESCRIPTION

This is a Genuine New, Cummins Fuel Injector, Cummins part number 5633476PX-SET ( OEM Part Number 5633476PX ). This part is primarily made for a Cummins QSX15, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

OEM NUMBERS

Primary OEM5633476PX
Additional OEM5633476, 5633476PX

ADDITIONAL DETAILS

CONDITIONGenuine New
UPC / Barcode00840490535336
WEIGHT18.00 LBS

SHIPPING OPTIONS

Ship Weight : 18.00 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.


Designed as a complete set of six for Cummins QSX15 engines, OEM 5633476PX fuel injectors are engineered to deliver consistent fuel delivery across all cylinders. Each injector in the set is manufactured to OEM specifications to ensure accurate fitment and compatibility with factory high-pressure fuel system components. Constructed from durable materials, they are built to withstand the demanding pressures and operating conditions common in heavy-duty diesel applications. The injectors support uniform fuel atomization to help maintain stable combustion and engine operation. This complete set is a dependable choice for comprehensive maintenance and targeted repair needs requiring reliable fuel system performance.

PEOPLE ALSO ASKS | BLOG(S)

The Cummins QSX15 Fuel Injector: OEM 5633476PX (Set of 6) works as part of the engine’s high-pressure fuel system to deliver precise, electronically controlled fuel injection to each of the six cylinders in the QSX15 engine.

In a six-cylinder diesel engine like the QSX15, each cylinder is equipped with its own injector. The injectors receive high-pressure fuel from the common rail system. The engine control module (ECM) determines exactly when and how long each injector should open based on engine speed, load, temperature, and operating conditions.

Here’s how the injector set functions during operation:

  • High-pressure fuel is supplied from the rail to each injector
  • The ECM sends an electrical signal to the injector’s solenoid
  • The solenoid activates, lifting the internal needle valve
  • Pressurized fuel is sprayed through the nozzle into the combustion chamber
  • The injector closes precisely to control fuel quantity and timing

The nozzle atomizes the fuel into a fine mist, allowing it to mix efficiently with compressed air inside the cylinder. This controlled combustion process generates the force needed to move the piston.

A matched set of six injectors ensures balanced fuel delivery across all cylinders. When all injectors operate evenly, the engine maintains smooth operation, consistent combustion, controlled emissions, and reliable performance. Properly functioning injectors are essential for protecting engine longevity and minimizing fuel system-related issues.

Prolonging the lifespan of your fuel injector starts with protecting the fuel system from contamination and maintaining proper combustion conditions. Modern fuel injectors operate under extremely high pressure and tight tolerances, making them highly sensitive to poor fuel quality and neglected maintenance.

The most important factor is clean, properly filtered fuel. Dirt, water, and metal particles can quickly damage injector tips and internal components. Replacing fuel filters at recommended intervals and draining water separators regularly helps prevent contamination-related failure.

Midway through routine maintenance, focus on these proven best practices:

  • Use high-quality diesel fuel from reputable sources
  • Replace fuel filters on schedule with OEM-quality parts
  • Drain water separators frequently
  • Avoid running the fuel tank extremely low
  • Address high-pressure pump issues immediately
  • Repair injector imbalance or misfire codes promptly

Maintaining proper engine performance is also critical. Over-fueling, excessive idling, and poor air-fuel control can increase carbon buildup and heat stress on injector tips. Regular diagnostic scans to monitor balance rates and fuel pressure readings can help detect early issues before they cause permanent damage.

In most cases, fuel injectors fail due to contamination or upstream fuel system problems. Consistent fuel system maintenance, clean diesel fuel, and early correction of warning signs are the most effective ways to extend injector lifespan and prevent costly repairs.

They precisely meter and deliver fuel from the high-pressure rail into each combustion chamber.

Yes, malfunctioning injectors can lead to uneven combustion and may trigger diagnostic trouble codes.

Yes, they work with the engine control system to help regulate delivery timing and fuel quantity.

Heavy-duty trucks, industrial equipment, and off-highway applications with QSX15 engines use this injector set.

Cummins Fuel Injectors