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Cummins 4BT Fuel Injector Pump : OEM 5315421

CUMMINS 4BT FUEL INJECTOR PUMP : OEM 5315421

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$4,490.00

CORE CHARGE:

$600.00
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 NUMBER5315421
PART TYPEFuel Injector Pump
BRANDTamerx Diesel Products
ENGINE MAKECummins
ENGINE TYPE4BT
YEAR
PART NUMBER06390RM

PRODUCT DESCRIPTION

This is a Remanufactured Tamerx Fuel Injector Pump, Tamerx part number 06390RM ( OEM Part Number 5315421 ). 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 4BT, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

OEM NUMBERS

Primary OEM5315421
Additional OEM5253102, 5310609, 5315421, DB2427-6390, DB2427-6397

ADDITIONAL DETAILS

CONDITIONRemanufactured
UPC / Barcode086547501439
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.


The Cummins 4BT Fuel Injector Pump (OEM 5315421) is a critical component designed to deliver precise fuel flow and pressure for optimal engine operation. Engineered to meet OEM specifications, this pump ensures efficient combustion, contributing to smooth performance and fuel system reliability. A properly functioning injector pump is essential for maintaining engine efficiency, reducing fuel consumption, and preventing injector-related issues. Each unit is built for durability and tested for quality to withstand the demands of heavy-duty applications. Replacing a worn or failing pump can help avoid starting issues, loss of power, and costly repairs, keeping your engine running at its best.

PEOPLE ALSO ASKS | BLOG(S)

The fuel injector pump is one of the most essential components in any diesel engine, controlling the flow and pressure of fuel delivered to the engine’s combustion chambers. For Cummins 4BT engines, the OEM 5315421 fuel injector pump is specifically designed to ensure precise fuel delivery, supporting engine performance and efficiency. In this blog, we’ll discuss how the fuel injector pump functions and its importance in keeping your Cummins 4BT engine running smoothly.

  • Precise Fuel Delivery

    • The fuel injector pump controls the timing and quantity of fuel sent to the engine’s cylinders, ensuring efficient combustion and optimal performance.

  • Supports Engine Efficiency

    • By delivering the right amount of fuel at the correct pressure, this injector pump helps improve fuel economy and reduces fuel wastage, making your engine more efficient.

  • Maintains Consistent Engine Power

    • A well-functioning injector pump ensures that the engine receives a steady supply of fuel, which is crucial for maintaining consistent power output, especially during heavy loads or demanding tasks.

  • Prevents Engine Issues

    • A malfunctioning fuel injector pump can lead to problems such as poor fuel delivery, misfires, or even engine stalling. The OEM 5315421 injector pump helps prevent these issues by ensuring reliable fuel flow.

  • Designed for Durability

    • Specifically engineered for Cummins 4BT engines, the OEM 5315421 injector pump is built to withstand the rigors of heavy-duty use, ensuring long-lasting performance.

The Cummins 4BT Fuel Injector Pump (OEM 5315421) is vital for maintaining fuel delivery, engine efficiency, and overall performance. Ensuring that this component is functioning correctly can prevent fuel-related issues and keep your engine running at peak efficiency. At TamerX Diesel Parts, we offer high-quality OEM fuel injector pumps to help you maintain the reliability and performance of your Cummins 4BT engine.

The fuel injector pump is a vital component of your vehicle’s fuel system, responsible for delivering the correct amount of fuel to the engine at the right pressure. When the fuel injector pump starts to fail, it can cause a range of performance issues that may lead to more serious engine problems if left unaddressed. In this blog, we’ll explore the common symptoms of a failing fuel injector pump and why it’s important to catch these signs early.

  • Hard Starting or No Start

    • One of the first signs of a failing fuel injector pump is difficulty starting the engine. The pump may not be delivering enough fuel pressure, causing the engine to crank longer than usual or not start at all.

  • Loss of Power

    • A faulty fuel injector pump can result in a noticeable loss of engine power, especially during acceleration. This happens because the engine isn’t receiving the proper amount of fuel to maintain performance.

  • Engine Misfires

    •  Inconsistent fuel delivery from a failing injector pump can cause engine misfires. This can lead to rough idling, jerking, or stalling, especially under load or at high speeds.

  • Poor Fuel Efficiency

    • A malfunctioning fuel injector pump can cause the engine to use more fuel than necessary, leading to reduced fuel efficiency. If you notice that you are refueling more frequently, the pump may not be working efficiently.

  • Excessive Exhaust Smoke

    •  A failing fuel injector pump can affect the air-fuel ratio, leading to incomplete combustion and producing excessive black or gray exhaust smoke. This is a clear indication of fuel system issues.

  • Check Engine Light

    •  A bad fuel injector pump can trigger the check engine light. The vehicle’s onboard diagnostics system may detect the problem, and a scan can reveal whether the pump is the cause.

A failing fuel injector pump can cause hard starting, loss of power, misfires, poor fuel efficiency, and even trigger the check engine light. Recognizing these symptoms early can prevent more severe engine problems and costly repairs. If you notice any of these signs, it’s important to have your fuel system inspected and repaired promptly to ensure your vehicle runs smoothly and efficiently. Regular maintenance and addressing fuel system issues early can help extend the life of your engine and improve overall performance.

Indicators of a potential malfunction include hard starting, noticeable power loss during acceleration, and unusual noises emanating from the engine.

Replacing the fuel injector pump involves specialized skills and equipment; it is generally recommended to seek assistance from a qualified diesel technician.

Factors such as prolonged wear, contamination from impure fuel, and inadequate lubrication can lead to the failure of the fuel injector pump.

It's advisable to include the fuel injector pump in regular maintenance checks, adhering to the manufacturer's recommended service intervals to ensure optimal performance.

Cummins Fuel Injector Pumps