Nanjing Golden Dragon New Energy Bus QG2221E1-L654M3 Air Pressure
Sensor
Product Description
In the advanced electronic architecture of a Nanjing King Long New Energy Bus, the pneumatic system is the silent workhorse powering critical
safety functions. At the heart of this system is the Air Pressure Sensor. Nanjing Dingguan Auto Parts Co., Ltd. proudly manufactures this
high-precision replacement, part number QG2221E1-L654M3, engineered to meet the exacting demands of modern electric
fleets.
This sensor is not just a gauge; it is the central nervous system
for your vehicle's compressed air supply, providing real-time data
that is essential for both safety and performance.
Key Features & Benefits:
- Critical for Safety and Performance: This sensor continuously relays precise air pressure data to the
vehicle's ECU. This information is vital for the reliable operation
of the air brake system, air suspension height control, and
pneumatic door mechanisms, ensuring the safety of every journey.
- Guaranteed OEM-Standard Fit: Engineered as a direct, bolt-on replacement for Nanjing King Long
part QG2221E1-L654M3, it guarantees a perfect fit and seamless
integration with the vehicle's electronic and pneumatic systems,
ensuring a fast, error-free installation.
- Eliminates Diagnostic Headaches: A faulty sensor is a primary cause of dashboard warning lights and
inaccurate system readings. This replacement restores trustworthy
data, allowing technicians to clear fault codes and confidently
diagnose the pneumatic system's health.
- Built for the Demands of an NEV: Constructed with high-quality electronic components and a robust,
sealed housing, this sensor is designed to withstand the constant
vibrations and temperature fluctuations of a commercial vehicle,
ensuring a long and dependable service life.
As a specialized manufacturer, Nanjing Dingguan is committed to
providing the high-precision electronic components that modern
fleets depend on.
Contact us today to request a competitive quote and ensure the
absolute integrity of your fleet's pneumatic system.
specification
Product Name: | Barometric pressure sensor | Part Number; | QG2221E1-L654M3 |
Quality control: | ISO 9001 .CE,RoHS | Size: | 22mm-24V |
| Type: | sensor | Place of origin: | Nanjing |
Materials: | aluminum alloy | Packaging: | Paper packaging/custom packaging |
Minimum order quantity: | 1 | Application: | bus,factory |
Status: | brand new | Cargo transportation: | TNT, EMS, UPS, FedEx, DHL or according to your requirements. |
Customs code: | QG2221E1-L654M3 | Factory quality inspection: | 100% inspection |
Detailed dimensions

How to buy the right bus accessories
| 1.Please provide VIN number |
| 2.Please provide clear photos |
| 3.Please provide the OEM number |
| 4.lf you are unsure, please contact us. |

Nanjing Dingguan Auto Parts Co., Ltd.
-- Your reliable partner for bus spare parts.
About Us
Nanjing Dingguan Automotive Parts Co., Ltd. specializes in
providing high-quality and cost-effective parts for buses and
commercial vehicles. We focus on the global market, have rich
experience in exporting bus and truck parts, provide services to
distributors and fleet operators, and provide tailor-made solutions
to meet different needs.
Q1: What is the primary function of this high-precision air
pressure sensor in Nanjing King Long new energy buses?
A1: This sensor is tasked with precisely monitoring air pressure in key systems such as the brake air reservoirs. By providing accurate and real-time pressure data to the
vehicle's control system, it plays a vital role in ensuring the safety and reliability of bus operations.
Q2: How can I confirm this pressure sensor is compatible with my
Nanjing King Long new energy bus?
A2: This product is engineered as a direct replacement part for specific Nanjing King Long new energy bus models. To guarantee
a perfect fit and optimal performance, please verify that your
vehicle requires part number QG2221E1-L654M3.
Q3: Why is this sensor described as "high-precision," and what are
the benefits?
A3: It is designated as "high-precision" due to its ability to provide
accurate and reliable pressure measurements. High precision is crucial for the proper functioning of systems
like braking. This ensures that control decisions are based on
highly accurate data, enhancing overall system performance and
safety. Some specialized pressure sensors can achieve high
comprehensive accuracy, for example, down to ±0.3% or even ±0.25% in certain applications.
Q4: Is this sensor built to last in the demanding environment of a
bus?
A4: Yes. We focus on the durability of our products. It is designed to
withstand the vibrations and temperature variations common in commercial vehicle operations. Features such as a wide operating temperature range (some sensors can operate from -40°C to 125°C) and the use of robust materials like stainless steel housings contribute to its long-term
reliability and help minimize vehicle downtime.
Q5: What about the output signal and electrical characteristics?
A5: This sensor is designed for easy integration into the vehicle's
electrical system. It typically provides a stable analog output signal (such as 4~20mA current loop or a voltage signal) for reliable
data transmission. Always refer to the product's datasheet for the
specific output type and electrical requirements of PN: QG2221E1-L654M3.
Q6: Is professional installation recommended?
A6: While it is designed as a direct replacement part, we highly
recommend that installation is carried out by a qualified technician. Proper installation is critical to ensuring accurate readings, system integrity, and safety.
Warehouse and cargo display

About shipping and packaging
transportation | TNT, EMS, UPS, FedEx, DHL or as per your requirement. |
| packaging | Bubble wrap, cartons, wooden boxes, and pallets are used to avoid
damage to goods caused by bumps. |

common problem
1: Can you provide an accurate price? |
| Sure. You need to provide the vehicle VIN number, provide the
product OEM code, or provide a clear product photo. |
2: What's your minimum order quantity? |
| No minimum order quantity, of course, if you buy more items from
our company, you can get preferential prices and discounts. |
3: What's the delivery time? |
Air freight orders take 5 to 8 days. Sea freight orders take 15 to
25 days. |
My advantage
1:High-Quality Bus Components |
| Specialized in premium aftermarket bus parts including engines,transmissions, and braking systems, built for durability and
performance. |
| 2:Comprehensive spare parts solution |
| We offer a full range of bus accessories: filters, suspension
components, electrical components, and interior accessories for all
major bus brands. |
3: ISO-Certified Manufacturing |
Our ISO 9001/TS 16949-certified products ensure strict quality
control, reliability, and compliance with international
standards.ISO |
4: Global Bus Part Coverage |
Our products are compatible with leading bus models from Europe,
Asia, and the Americas. |
5;Extensive product catalog |
Engine parts, HVAC systems, lighting, wheels and safety components
covering city, intercity and long-distance buses. |
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