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Cummins 6BTA, 5.9L Injection Pump 1985-1990: OEM 3917002

CUMMINS 6BTA, 5.9L INJECTION PUMP 1985-1990: OEM 3917002

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$2,150.00

CORE CHARGE:

$850.00
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 NUMBER3917002
PART TYPEInjection Pump
BRANDTamerx Diesel Products
ENGINE MAKECummins
ENGINE TYPE6BTA, 5.9L
YEAR1985-1990
PART NUMBER3917002RM
ADDITIONAL NOTESVE6R373

PRODUCT DESCRIPTION

This is a Remanufactured Tamerx Injection Pump, Tamerx part number 3917002RM ( OEM Part Number 3917002 ). 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 6BTA, 5.9L, production years 1985-1990, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

Additional Notes: VE6R373

OEM NUMBERS

Primary OEM3917002
Additional OEM3908219, 3917002, 3939905

ADDITIONAL DETAILS

CONDITIONRemanufactured
UPC / Barcode086547499811
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.


Power up your classic Cummins with the Cummins 6BTA, 5.9L Injection Pump 1985–1990 – OEM 3917002, engineered to deliver reliable fuel pressure for smooth starts and strong performance. This injection pump helps ensure consistent fuel delivery under load, keeping your engine responsive and dependable. Built to meet OEM standards for a precise fit and durable operation, it’s a trusted replacement for older systems. Keep your 6BTA running strong and ready for whatever the road throws your way.

FITMENT CHART

YEARMAKEENGINE(S)
1985Cummins 6BTA 5.9L
1986Cummins 6BTA 5.9L
1987Cummins 6BTA 5.9L
1988Cummins 6BTA 5.9L
1989Cummins 6BTA 5.9L
1990Cummins 6BTA 5.9L

PEOPLE ALSO ASKS | BLOG(S)

Title: Why the Cummins 6BTA / 5.9L Injection Pump (1985–1990, OEM 3917002) Is Essential for Reliable Fuel Delivery

The injection pump is one of the most critical components in any diesel engine’s fuel system, and for older engines like the Cummins 6BTA / 5.9L, it plays an especially vital role. The Cummins 6BTA, 5.9L Injection Pump (1985–1990, OEM 3917002) is engineered to meet original factory specifications, ensuring precise fuel delivery and pressure for dependable combustion. Choosing the correct OEM-grade injection pump helps maintain strong engine performance, consistent operation, and long-term reliability — even decades after the engine’s initial production.

This injection pump directly affects how your engine runs — here’s why it matters:

  • Delivers Precise Fuel Pressure – Provides high-pressure fuel to the injectors at the correct timing and volume required for efficient combustion.

  • Supports Stable Engine Operation – A reliable fuel pump helps prevent issues like hard starts, rough idling, or uneven power delivery.

  • Enhances Fuel Efficiency – Accurate fuel metering contributes to better combustion, reducing wasted fuel and improving overall economy.

  • OEM-Grade Fit and Durability – As OEM 3917002, this pump matches original manufacturer specifications for fitment and dependable long-lasting operation.

  • Prevents Fuel System Problems – Replacing a worn or failing injection pump helps avoid symptoms such as poor throttle response, black smoke, or decreased engine performance.

A failing or worn injection pump can lead to poor engine behavior, reduced power, and increased fuel consumption. The Cummins 6BTA / 5.9L Injection Pump (OEM 3917002) delivers the precision and OEM-standard quality your engine depends on — helping keep your diesel running smoothly and reliably. For customers seeking a trusted replacement component, Tamerx offers high-quality fuel system parts designed to support long-term engine health and consistent performance.

An injection pump is responsible for delivering fuel at the correct pressure and timing for proper engine operation. When problems develop, engine performance and reliability can quickly suffer. Testing and troubleshooting injection pump issues involves a combination of visual checks, diagnostics, and performance evaluation.

  • Check for warning lights or fault codes: Diagnostic trouble codes related to fuel pressure or timing often provide the first clues.

  • Inspect for fuel leaks: External leaks around the pump or fuel lines can indicate seal or housing issues.

  • Monitor fuel pressure readings: Low or unstable fuel pressure may point to internal pump wear or failure.

  • Evaluate engine behavior: Hard starting, rough running, stalling, or loss of power can be signs of pump problems.

  • Inspect fuel supply components: Clogged fuel filters or restricted fuel lines can mimic injection pump failure.

  • Review fuel quality: Contaminated or poor-quality fuel can damage internal pump components and affect performance.

Troubleshooting injection pump problems requires careful evaluation of the entire fuel system. Identifying the root cause early helps prevent unnecessary part replacement and supports reliable engine operation.

Regular fuel filter changes, good fuel quality, and ensuring tight fuel line connections help prevent contaminants and air leaks. Routine checks keep the pump operating efficiently.

Yes, if the pump delivers too much or too little fuel at the wrong time, incomplete combustion can produce black or white smoke. Correct pump calibration helps maintain cleaner exhaust.

Installation involves removing the old pump, ensuring clean mounting surfaces, and aligning timing marks before securing the new unit. Proper torque on mounting bolts and line connections helps prevent leaks and ensures correct timing.

Yes, after installation the pump timing often needs to be adjusted to match the engine’s specifications. Correct calibration ensures optimal fuel delivery and engine performance.

Cummins Injection Pumps

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