29558647 Differential Pressure Switch Allison spare parts

29558647 Differential Pressure Switch Allison spare parts

Allison 29558647 is an original hydraulic differential pressure switch designed specifically for Allison 1000/2000/3000/4000 series heavy-duty automatic transmissions. It undertakes the core functions of hydraulic circuit pressure monitoring, shift control and fault protection, and is a key component of Allison Transmission that ensures the reliable operation of commercial vehicles, buses and engineering vehicles.

Core technical parameters:

Model: 29558647
Compatible Systems: Allison 1000/2000/3000/4000 Series Automatic Transmissions (Allison Transmission)
Working medium: Transmission hydraulic fluid (ATF)
Operating temperature: -40°C to +125°C (suitable for heavy loads and extreme conditions)
Pressure interface: Standard hydraulic thread (compatible with original valve body hydraulic circuit)
Electrical output: SPDT contact configuration supports precise pressure signal transmission.
Pressure resistance: Meets the maximum system operating pressure requirements of the transmission.
Protection performance: Vibration and shock resistant design, meeting stringent automotive environmental standards.
Functional positioning: Pressure monitoring → Signal output → Gear shifting/protection logic linkage

Product advantages:

1. Original factory matching: 100% compatible with Allison transmission valve body and TCM control logic, avoiding shift jerking, code errors or failures caused by signal incompatibility.
2. Precise and reliable: High-precision pressure sensing and fast response characteristics ensure timely triggering of protection when pressure is abnormal, preventing overload, overheating or wear of the transmission system.
3. Durable and long-lasting: Allison Transmission has been proven to withstand heavy loads and extreme conditions, making it suitable for complex usage scenarios such as long-haul freight, urban public transport, and engineering operations.
4. Direct replacement: The specifications are exactly the same as 29558647, and the old parts can be directly replaced without modifying the wiring or valve body. The installation is convenient.

Get a personalized quote now