
Cummins ISL, QSL Fuel Gear Pump 2018-2026: OEM 6437706RX
CUMMINS ISL, QSL FUEL GEAR PUMP 2018-2026: OEM 6437706RX

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY
1M MILES OR 1 YEAR
PRODUCT DESCRIPTION
This is a Remanufactured Tamerx Fuel Gear Pump, Tamerx part number 6437706RM ( OEM Part Number 6437706RX ). 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 ISL, QSL, production years 2018-2026, and comes with a One Million Miles or One Year Warranty.
Additional Notes: Newest OEM Design
OEM NUMBERS
| Primary OEM | 6437706RX |
| Additional OEM | 5491154, 5654011, 6437706RX |
ADDITIONAL DETAILS
| CONDITION | Remanufactured |
| UPC / Barcode | 00840490557604 |
| WEIGHT | 12.00 LBS |
SHIPPING OPTIONS
Ship Weight : 12.00 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 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, 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 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.
Maintain a steady fuel supply with this Cummins ISL, QSL Fuel Gear Pump for 2018–2026 applications. OEM 6437706RX helps deliver fuel through the system at the required pressure and flow for consistent engine operation. A reliable replacement choice for a worn or failing fuel gear pump in compatible Cummins ISL and QSL engines.
FITMENT CHART
| YEAR | MAKE | ENGINE(S) | ||||
|---|---|---|---|---|---|---|
| 2018 | Cummins | ISL | QSL | |||
| 2019 | Cummins | ISL | QSL | |||
| 2020 | Cummins | ISL | QSL | |||
| 2021 | Cummins | ISL | QSL | |||
| 2022 | Cummins | ISL | QSL | |||
| 2023 | Cummins | ISL | QSL | |||
| 2024 | Cummins | ISL | QSL | |||
| 2025 | Cummins | ISL | QSL | |||
| 2026 | Cummins | ISL | QSL | |||
PEOPLE ALSO ASKS | BLOG(S)
Fuel demand does not remain constant during diesel engine operation, making dependable fuel transfer important across different operating conditions. The Cummins ISL, QSL Fuel Gear Pump 2018-2026: OEM 6437706RX provides the mechanical pumping action needed to maintain fuel movement through compatible fuel systems as operating demand changes.
- OEM 6437706RX is intended for compatible 2018-2026 Cummins ISL and QSL diesel applications.
- Positive-displacement gear operation moves a controlled volume of fuel as the internal gears rotate.
- Maintains continuous fuel transfer toward downstream fuel-system components during normal engine operation.
- Close internal gear clearances help the pump move fuel efficiently and consistently through its housing.
- Responds to changing fuel demand by supplying the fuel circuit as engine operating conditions vary.
- Application-specific ports and mounting points allow proper integration with compatible Cummins ISL and QSL fuel systems.
- Durable internal components and housing are suited for repeated mechanical operation and continuous exposure to diesel fuel.
- Replacement restores mechanical fuel transfer when an existing gear pump develops internal wear or can no longer provide adequate fuel flow.
The Cummins ISL, QSL Fuel Gear Pump OEM 6437706RX provides a dependable mechanical link between the fuel supply and the components that require a steady feed of diesel. For customers searching for a Cummins ISL fuel gear pump, Cummins QSL fuel pump, diesel fuel transfer pump, or OEM 6437706RX replacement, this application-specific pump offers the fit and pumping function required by compatible fuel systems.
Intermittent starting problems can occur when a worn Fuel Gear Pump is unable to consistently deliver the fuel flow and pressure required during engine startup. Internal wear may cause fuel supply to vary between starts, particularly as operating conditions, temperature, or fuel system demand change.
- Inconsistent fuel pressure: A worn pump may sometimes provide adequate pressure and other times struggle to supply enough fuel for starting.
- Extended cranking: The engine may need to crank longer before sufficient fuel reaches the injection system.
- Occasional no-start condition: Severe pump wear can cause the engine to start normally at times but fail to start on other attempts.
- Hard starting when hot or cold: Changes in temperature can make existing fuel delivery problems more noticeable.
- Loss of prime: Internal wear or leaks within the fuel supply system may allow fuel to drain back and delay startup.
- Reduced fuel flow: Worn pump components can limit the volume of fuel delivered, especially when demand increases.
- Related fuel system symptoms: Rough running, hesitation, reduced power, or low fuel pressure codes may appear along with starting difficulties.
A worn Fuel Gear Pump is only one possible cause of intermittent starting problems. Testing fuel pressure and flow while also checking filters, lines, fittings, air intrusion, and related fuel system components can help determine whether the pump is responsible.
Early signs may include longer cranking, inconsistent fuel delivery, rough operation, or reduced engine response when fuel demand increases.
Potentially. Internal pump wear may contribute to fuel delivery issues, although leaks, air entering the system, and other fuel-system components should also be checked.
Yes. A weakening fuel gear pump may provide adequate fuel at idle but have difficulty maintaining sufficient delivery as engine speed and fuel demand increase.
Fuel contamination, poor filtration, debris, inadequate fuel supply, and unfavorable fuel-system conditions can contribute to premature pump wear.












