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Brand: C.OEFT
OE numbers: 5170877AA
Product Name:Transmission Valve
Compatible model:
Product status: Remanufactured
Product weight: 2 KG
Packaging size: 15X7.5X6 cm
Product packaging: Neutral Packaging
Car Series: American
Car Type: for Chrysler
As a key electronic control component for some 6AT/8AT transmissions under Chrysler (suitable for models such as Dodge Journey and Chrysler 300C), the 5170877AA solenoid valve undertakes the core task of "electrical signal-hydraulic action" conversion. It achieves three core functions through precise control, ensuring the shifting smoothness and transmission reliability of the gearbox:
1. Dynamic Graded Oil Pressure Regulation
Targeting different shifting conditions (e.g., starting, rapid acceleration, high-speed cruising), it has a built-in multi-stage pressure regulation structure, enabling stepless oil pressure adjustment within the range of 0.3-2.5MPa. For instance, during low-speed 1-2 gear shifting, it outputs low oil pressure (0.3-0.8MPa) to buffer the clutch engagement impact; during rapid acceleration 3-4 gear shifting, it increases the oil pressure to 1.8-2.5MPa to enhance the rigidity of power transmission and prevent slipping. Meanwhile, it forms a closed-loop control by real-time feeding back oil pressure signals to the TCU, controlling the oil pressure fluctuation error within ±0.05MPa to ensure shifting accuracy.
2. Working Condition-Adaptive Fault Protection
Equipped with a built-in current detection and temperature sensing module, it can real-time monitor its own working status: when abnormal current (e.g., overcurrent ≥ 2A) or working temperature exceeding 130℃ is detected, it immediately sends a fault signal to the TCU, triggering a protection mechanism. On one hand, it cuts off non-essential power supply to itself to avoid coil burnout; on the other hand, it assists the TCU in switching to "limp mode" to limit the maximum gear and output power of the transmission, preventing fault escalation and ensuring the safe driving of the vehicle.
1. Excellent Stability Under All Working Conditions and Strong Environmental Adaptability
It is optimally designed for complex usage environments: In low-temperature environments (-40℃ to -10℃), the coil adopts a low-resistance design, which can quickly heat up to the working temperature to avoid valve core jamming due to low temperatures; in high-temperature environments (above 40℃), the built-in heat dissipation channel accelerates heat dissipation. Cooperating with the transmission cooling system, it stabilizes the working temperature of the solenoid valve within the optimal range of 60-110℃, reducing problems such as coil aging and seal failure caused by high temperatures. At the same time, it can withstand changes in the acidity and alkalinity of hydraulic oil (pH value: 6.5-8.5) and has excellent corrosion resistance, making it suitable for various working conditions such as urban congestion, long-distance high-speed driving, and rough mountain roads.
2. Controllable Maintenance Costs and Outstanding Cost-Effectiveness
Compared with replacing the entire transmission valve body assembly (cost: approximately 3,000-5,000 yuan), replacing the 5170877AA solenoid valve alone can reduce maintenance costs by more than 80%. It adopts an independent modular design, and disassembly and installation only require conventional tools (no special equipment is needed), with maintenance man-hours ≤ 1 hour, significantly shortening the vehicle downtime for repairs. In addition, the stability of original accessories can reduce the probability of subsequent secondary failures, avoiding repeated maintenance expenses, and achieving remarkable comprehensive cost-effectiveness.
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