Cummins ISX15, QSX Sensor Pressure 2010-2018: OEM 4921730
CUMMINS ISX15, QSX SENSOR PRESSURE 2010-2018: OEM 4921730
ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY
WARRANTY
1M MILES OR 1 YEAR
PRODUCT DESCRIPTION
This is a New, Tamerx Sensor Pressure, Tamerx part number 4921730TX ( OEM Part Number 4921730 ).This part is primarily made for a Cummins ISX15, QSX, production years 2010-2018, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here
OEM NUMBERS
| Primary OEM | 4921730 |
| Additional OEM | 4921730 |
ADDITIONAL DETAILS
| CONDITION | New |
| UPC / Barcode | |
| WEIGHT | 1.00 LBS |
SHIPPING OPTIONS
Ship Weight : 1.00 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.
"This Product Doesn't Have a Core"
Built to provide dependable monitoring of critical engine pressures, the OEM 4921730 Pressure Sensor fits Cummins ISX15 and QSX engines produced from 2010 to 2018. This sensor delivers precise data to the engine control module, helping it regulate key functions and maintain stable operation under varying load conditions. Its OEM-grade construction ensures accurate fitment, consistent signal output, and durability against heat, vibration, and exposure within demanding environments. When issues such as fluctuating readings, warning indicators, or pressure-related diagnostic codes arise, this component offers a reliable replacement option. Manufactured with quality materials and precise engineering, it supports consistent performance across all compatible ISX15 and QSX applications in this model range.
FITMENT CHART
| YEAR | MAKE | ENGINE(S) | ||||
|---|---|---|---|---|---|---|
| 2010 | Cummins | ISX15 | QSX | |||
| 2011 | Cummins | ISX15 | QSX | |||
| 2012 | Cummins | ISX15 | QSX | |||
| 2013 | Cummins | ISX15 | QSX | |||
| 2014 | Cummins | ISX15 | QSX | |||
| 2015 | Cummins | ISX15 | QSX | |||
| 2016 | Cummins | ISX15 | QSX | |||
| 2017 | Cummins | ISX15 | QSX | |||
| 2018 | Cummins | ISX15 | QSX | |||
PEOPLE ALSO ASKS | BLOG(S)
The Cummins ISX15 and QSX Pressure Sensor (OEM 4921730) is a compact yet highly engineered device designed to measure system pressure—often fuel, oil, or intake-related—depending on the engine’s configuration. Its internal components work together to deliver accurate, real-time pressure data to the engine control module.
Key Components of the Pressure Sensor
- Pressure-Sensitive Diaphragm
- This thin, flexible membrane is the heart of the sensor. As system pressure changes, the diaphragm flexes, creating measurable movement or force.
- Sensing Element (Transducer / Strain Gauge)
- Connected to the diaphragm, this electronic element converts physical pressure changes into an electrical signal. It’s the component responsible for translating mechanical force into readable data.
- Sensor Housing
- A durable metal body that protects internal electronics from heat, vibration, and contaminants. It also threads into the engine block, fuel rail, or manifold.
- Electrical Connector
- A sealed plug that links the sensor to the wiring harness. It ensures clean transmission of voltage signals to the engine control module.
- Internal Circuit Board
- Processes the raw voltage generated by the sensing element and stabilizes the signal before sending it to the engine’s computer.
- Sealing Components (O-Rings / Gaskets)
- Provide a leak-proof fit between the sensor and the system it monitors, ensuring accurate pressure readings.
Each piece of the sensor performs a specific role that ensures accurate and reliable pressure monitoring. A failure in any component—whether a cracked diaphragm, corroded connector, or damaged circuit—can lead to incorrect data, fault codes, poor engine operation, or system derate.
A pressure sensor is a key component that helps your vehicle’s computer manage fuel delivery, emissions, and overall engine stability. When this sensor is installed correctly, it provides accurate readings that the system depends on to make the right adjustments. Even a minor installation error can lead to false data, warning lights, and inefficient engine operation.
Proper installation ensures the sensor is sealed, aligned, and connected exactly as the manufacturer intended. This prevents leaks, electrical faults, or inconsistent readings that could create drivability issues or lead to unnecessary repairs.
Risks of improper pressure sensor installation include:
- Erratic idling or unstable engine behavior
- Hard starting or stalling
- Check Engine Light tied to inaccurate pressure readings
- Reduced fuel efficiency
- Misdiagnosis of other engine components
Incorrect installation can also cause the sensor to fail prematurely, resulting in additional expenses and unexpected downtime. A secure fit, correct torque, and clean electrical connectors are all crucial steps.
Having the sensor installed by a qualified technician — or following the manufacturer’s instructions closely — ensures the system receives reliable data and helps your engine operate consistently and safely.
It should be checked when system pressures seem erratic or when related diagnostic codes are active.
Correct sealing prevents leaks that could cause inaccurate readings or system pressure loss.
Loose, damaged, or corroded terminals can distort the signal sent to the ECM.
They verify the part number and ensure the connector, thread size, and calibration spec match the engine's build requirements.
Cummins Sensor Pressures
