Description
Product Overview
The Zafina UP AC high pressure sensor switch is engineered as a direct‑fit replacement for original equipment applications across a broad range of General Motors and related makes. Designed to meet or exceed OEM specifications, this sensor delivers precise pressure readings that are essential for maintaining optimal air‑conditioning performance, especially in high‑heat environments where accurate pressure regulation prevents compressor overload and premature wear.
Manufactured with high‑grade alloys and reinforced pin terminals, the sensor offers superior durability against vibration, corrosion, and thermal cycling. The internal diaphragm is calibrated to respond to pressure changes within the 0‑150 psi range, providing a reliable signal to the vehicle’s control module. This ensures the A/C system can modulate compressor engagement accurately, delivering consistent cabin comfort while protecting the compressor from damage caused by excessive pressure.
Compatibility is verified against a comprehensive list of part numbers, including 1551343, 15-51343, 13587668, 1550147, 1551258, 155884, 22634172, 22678731, SW10093C, and 13502759, covering model years 2002 through 2021 for Chevrolet, Buick, Cadillac, GMC, Pontiac, Saturn, Isuzu, Hummer, Oldsmobile, and Saab. The sensor’s compact form factor fits seamlessly into the existing mounting bracket, eliminating the need for additional hardware or modifications.
Each unit undergoes rigorous quality testing, including pressure leak checks, electrical continuity verification, and environmental stress screening. The result is a component that not only matches the performance of the original part but also extends service intervals thanks to its robust construction and premium material selection.
![[Product front view showing all components]](https://www.coastalbuy.store/wp-content/uploads/2026/06/5f6ddc47a3c2496aaa47a3b86eb83098.jpg)
Usage
This sensor is ideal for both professional automotive technicians and DIY enthusiasts who need a reliable solution for A/C pressure monitoring. Install the sensor in the high‑pressure side of the air‑conditioning system, ensuring the electrical connector is securely seated and the mounting bolts are torqued to the manufacturer’s specifications. Once installed, the vehicle’s diagnostic system will recognize the sensor and display real‑time pressure data, allowing for precise tuning and troubleshooting.
Typical use cases include routine maintenance, replacement of a failed sensor, and performance upgrades for vehicles that operate in extreme climates. The sensor’s fast response time helps the climate control module adjust compressor cycles quickly, reducing energy consumption and improving fuel efficiency. It also supports diagnostic tools that read pressure values, making it easier to pinpoint issues such as refrigerant leaks or compressor failures.
Because the sensor is built to withstand harsh under‑hood conditions, it performs reliably in both hot summer months and cold winter periods. Its sealed design prevents moisture ingress, which is a common cause of sensor drift in lower‑quality components. This reliability translates to fewer service calls and longer intervals between replacements, offering cost savings over the life of the vehicle.
Why Choose Us
Choosing Zafina UP means selecting a brand committed to engineering excellence and customer satisfaction. Our sensors are produced in a controlled manufacturing environment where each batch is traceable, ensuring consistency and accountability. We source only premium grade materials, such as corrosion‑resistant alloys and high‑temperature plastics, to guarantee that the sensor endures the demanding conditions of modern automotive systems.
Our after‑sales support includes a dedicated technical helpline staffed by engineers familiar with the intricacies of A/C pressure monitoring. Should you encounter any installation challenges or performance questions, our team is ready to provide step‑by‑step guidance, troubleshooting tips, and warranty assistance. We stand behind our products with a limited warranty that covers defects in material and workmanship, reinforcing our confidence in the sensor’s longevity.
In addition to product quality, we prioritize clear communication and accurate part matching. Our online resources feature detailed fitment charts, cross‑reference numbers, and downloadable installation manuals, helping you verify compatibility before purchase. This transparency reduces the risk of ordering the wrong part and streamlines the repair process.
Key Features
- Direct‑fit design eliminates the need for modifications, saving installation time.
- High‑grade alloy construction resists corrosion and vibration for extended service life.
- Accurate pressure range (0‑150 psi) ensures optimal A/C performance and compressor protection.
- Premium pin terminals provide reliable electrical connection in harsh environments.
- Comprehensive technical support and warranty give peace of mind after purchase.
FAQ
What vehicles are compatible with this sensor?
The sensor fits Chevrolet, Buick, Cadillac, GMC, Pontiac, Saturn, Isuzu, Hummer, Oldsmobile, and Saab models from 2002 to 2021. It matches part numbers such as 1551343, 15-51343, 13587668, and others listed in the product details.
How do I install the sensor?
Installation involves removing the old sensor, cleaning the mounting surface, and securing the new sensor with the original bolts. Connect the electrical plug, torque the bolts to the manufacturer’s specification, and verify operation with a diagnostic scan tool.
Can I use this sensor with aftermarket A/C systems?
Yes, the sensor is compatible with most aftermarket refrigerant systems that adhere to the same pressure specifications. However, always confirm the pressure range and connector type before installation.
What warranty does Zafina UP provide?
We offer a limited one‑year warranty covering defects in material and workmanship. If the sensor fails within the warranty period, we will replace it at no additional cost.
Is there technical support available if I have installation questions?
Absolutely. Our technical support team is available via phone and email to assist with installation steps, troubleshooting, and any fitment concerns you may have.
Overall, the Zafina UP AC high pressure sensor switch combines precise engineering, durable materials, and comprehensive support to deliver a dependable solution for maintaining optimal air‑conditioning performance across a wide range of vehicles.




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