SEARCH FOR YOUR PRODUCT
Brand: C.OEFT
OE numbers: 625DHA-1500010DA
Product Name: Automatic Transmission Assembly
Compatible model:625DHA-1500010DA
Product status:Remanufactured
Product weight: 10.000KG
Packaging size:63X41X36 cm
Product packaging: Neutral Packaging
Car Series: Chinese
Car Type: for Chery Tiggo 7 T15 and Chery Tiggo 7
1. Turbo-Adapted Power Transmission & Torque Management
As the core drivetrain component for 1.5T vehicles, the assembly transfers power from the turbocharged engine to the drive wheels via an upgraded torque converter. The torque converter is calibrated to multiply torque by 3-3.5x during low-speed acceleration, compensating for turbo lag and providing strong initial power. The enhanced gear sets adjust torque and speed according to driving conditions—lower gears leverage turbo boost for rapid acceleration, while higher gears optimize efficiency at cruising speeds.
2. Boost-Sensing Automatic Gear Shifting
Working in tandem with the target vehicles’ TCU, the assembly integrates boost pressure data to 实现 adaptive automatic shifting. The TCU monitors engine RPM, throttle position, vehicle speed, and turbo boost pressure (via the engine’s boost sensor) to determine optimal shift points. For example, during hard acceleration (boost pressure ≥0.8 bar), it delays upshifts to maintain boost and maximize power; during light throttle (boost pressure ≤0.3 bar), it upshifts early to save fuel. It also adapts to “turbo-friendly” driving styles, avoiding frequent shifts that disrupt boost buildup.
3. Enhanced Torque Converter Operation & Lockup Control
The upgraded torque converter features a larger impeller (10% increase in diameter) to handle higher fluid flow demands of turbocharged engines. During low-speed operation, the stator efficiently redirects fluid to multiply torque; once the vehicle reaches 70-90 km/h (adjusted for turbo boost), the TCU activates the lockup clutch earlier than in non-turbo assemblies, eliminating fluid slippage and improving power transfer efficiency by 6-9%.
4. High-Temperature Hydraulic System Regulation
The valve body acts as a high-temperature hydraulic control center, directing ATF 4400 fluid (formulated for turbo systems) to clutch packs, solenoids, and the torque converter via enlarged oil passages. High-precision pressure regulators maintain hydraulic pressure within 0.8-2.8 bar (higher than the base model) to ensure consistent clutch engagement under turbo torque loads. A high-capacity oil filter (filtration accuracy: 10μm) traps turbo-related debris, while an upgraded pressure relief valve prevents overpressure damage in high-boost scenarios.
5. Turbo-Specific TCU Communication & Diagnostic Capabilities
The assembly connects to the TCU via a 16-pin electrical connector (upgraded from 14-pin) to transmit additional turbo-related data, including transmission fluid temperature (monitored by a high-precision NTC sensor), gear position, solenoid current, and clutch engagement status. If turbo-related faults are detected (e.g., solenoid response delay under high boost, abnormal fluid temperature), the TCU stores specific DTCs (e.g., P0745 for pressure control solenoid B malfunction under boost) and illuminates the transmission warning light. Mechanics can retrieve codes using Chery/Geely-specific diagnostic tools (e.g., Chery X431 Pro) for targeted troubleshooting.
6. Enhanced Safety Features for Turbocharged Vehicles
Park (P) Position: Upgraded parking pawl with hardened teeth (HRC 58-60) for secure locking of the higher torque output from 1.5T engines.
Reverse (R) Interlock: Retains the brake pedal requirement, with additional electronic verification to prevent reverse engagement during turbo spool-down.
Turbo-Protected Limp-Home Mode: If a critical fault is detected, the TCU limits the assembly to 2nd gear and reduces maximum turbo boost pressure to 0.5 bar, protecting both the transmission and turbocharger while allowing safe travel to a repair facility.
1. Model-Specific OE-Precision Compatibility
The Transmission Assembly Gearbox 625DHA-1500010DA is upgraded for dedicated compatibility with specific mid-size vehicles, primarily targeting Chery Tiggo 7 (2020-2023 models) and Geely Emgrand GL equipped with 1.5T turbocharged engines. It adheres strictly to the OE design standards of these target models, matching unique parameters such as bell housing contour (customized for 1.5T engine flanges), input/output shaft spline precision (21-spline input with enhanced wear resistance, 27-spline output with optimized torque distribution), and mounting hole positioning with a tighter tolerance of ±0.1mm. This model-specific design eliminates the minor fitment adjustments sometimes needed for universal assemblies, ensuring seamless integration with the target vehicles’ powertrains and avoiding TCU communication delays or powertrain vibration issues.
2. Enhanced Construction for Turbocharged Torque Demands
Gear System: Upgraded from 20CrNiMo to 18CrNiMo7-6 alloy steel, the gear sets undergo vacuum carburizing (depth: 1.2-1.5mm) and precision grinding, achieving a surface hardness of HRC 62-65 and core toughness of ≥100 J/cm². This enables the assembly to withstand continuous torque loads of up to 300 Nm—20% higher than the 625DHA-1500010—perfectly matching the output of 1.5T turbocharged engines.
Housing: Die-cast from ADC12 aluminum alloy with additional reinforcing ribs at the turbocharger connection interface, the housing resists thermal expansion and vibration (up to 40g) under the higher operating temperatures of turbocharged systems (-40°C to 140°C).
Sealing & Protection: Equipped with triple-lip Viton rubber seals (upgraded from double-lip) and stainless steel gaskets with anti-corrosion coating, it provides superior resistance to high-temperature transmission fluid leakage. A reinforced dust cover with a labyrinth seal on the input shaft further prevents contamination in dusty or humid environments.
3. Turbo-Optimized Shift Performance & Fuel Efficiency
Valve Body & Solenoids: The recalibrated valve body features optimized oil passages for faster hydraulic response, paired with high-frequency solenoids (response time ≤180ms—10% faster than the base model) to handle the rapid torque fluctuations of turbocharged engines.
Gear Ratios: Tailored for 1.5T power curves: 1st (3.210) for strong turbo lag compensation, 2nd (1.905) and 3rd (1.250) for mid-range torque delivery, 4th (0.920) and 5th (0.710) for highway efficiency. This configuration reduces turbo lag during acceleration by 15% and improves fuel economy by 8-10% compared to non-optimized assemblies, translating to 0.6-0.9 L/100km savings for 1.5T vehicles.
Shift Logic: Preloaded with TCU adaptive parameters for turbocharged engines, it adjusts shift points based on turbo boost pressure (monitored via TCU integration), delaying upshifts during boost buildup for consistent power delivery.
4. Cost-Effective Dedicated Solution for Repair & Fleet
While model-specific, the 625DHA-1500010DA remains cost-effective—priced 35-45% lower than genuine OEM assemblies for target models. Its modular design retains easy replacement of key components (solenoids, clutch packs, valve bodies) without full disassembly, cutting maintenance labor time by 30%. It is fully compatible with Chery/Geely’s factory-specified ATF 4400 transmission fluid, eliminating the need for specialized fluid inventory, making it ideal for repair shops specializing in Chery/Geely vehicles and fleet operators managing these mid-size models.
5. Rigorous Turbo-Specific Quality Testing
Each assembly undergoes a 12-stage quality verification process (adding turbo compatibility and boost pressure simulation tests to the base model’s 10 stages): static dimensional inspection, component hardness testing, hydraulic pressure leak testing (2x operating pressure), dynamic shift simulation (8,000+ cycles under varying boost pressures), noise level measurement (≤72 dB at idle), high-temperature endurance testing (140°C for 6 hours), vibration resistance testing, TCU turbo parameter compatibility testing, road simulation on dynamometers with 1.5T engine emulation, turbo boost pressure cycling testing, seal integrity testing, and final visual inspection. This ensures a failure rate of less than 0.3% within the first 60,000 kilometers.
6. Reduced Noise & Vibration for Enhanced Comfort
The gear sets feature optimized tooth profiles (helical angle increased from 20° to 25°) to minimize meshing noise. The torque converter is upgraded with a dual-damper spring system (instead of single-damper) to absorb vibration from turbocharger operation. These improvements lower overall transmission noise by 3-4 dB compared to the base model, enhancing cabin comfort for mid-size vehicle passengers.
INQUIRE NOW 
