SEARCH FOR YOUR PRODUCT
Brand: C.OEFT
OE numbers: 121000059AA
Product Name: Automatic Transmission Assembly
Compatible model:121000059AA
Product status:NEW
Product weight: 120.000KG
Packaging size:100X100X100 cm
Product packaging: Neutral Packaging
Car Series: Chinese
Car Type: for All-New Generation Chery Tiggo 7 (T1E)
1. Turbo-Adapted Power Transmission
As the core drivetrain component of the all-new Tiggo 7, the assembly transfers power from the 1.5T/1.6T turbo engine to the drive wheels via its reinforced torque converter and planetary gear sets. The torque converter provides torque multiplication (2.8-3.5x) during low-speed acceleration, effectively compensating for turbo lag and ensuring strong 起步 performance. The gear sets dynamically adjust torque and speed to match the engine’s power output, supporting smooth acceleration from a standstill and stable cruising at high speeds.
2. Adaptive Automatic Gear Shifting
Working in seamless synergy with Tiggo 7’s TCU, the transmission implements intelligent automatic shifting by monitoring engine RPM, throttle position, vehicle speed, turbo boost pressure, and driver input. It supports three driving modes tailored to Tiggo 7’s usage scenarios:
Eco Mode: Upshifts early (2,000-2,500 RPM) to prioritize fuel efficiency for urban commuting.
Normal Mode: Balances power and efficiency, shifting at 2,500-3,000 RPM for daily driving.
Sport Mode: Delays upshifts to 3,500-4,200 RPM, enhancing throttle response for aggressive acceleration.
The TCU also learns driver habits over 50-80 kilometers, automatically adjusting shift timing for a personalized driving experience.
3. Efficient Torque Converter Operation
The reinforced torque converter integrates a variable-speed lockup clutch that activates at 55-60 km/h to eliminate fluid slippage, improving power transfer efficiency by 10-12%. During highway cruising, the lockup clutch maintains engagement across a wide speed range, reducing fuel consumption and engine noise. The converter also features a torque damper that absorbs vibration, enhancing ride comfort for Tiggo 7 passengers.
4. Precision Hydraulic Control
The integrated hydraulic valve body serves as the transmission’s control center, directing transmission fluid through precision-machined passages to actuate clutch packs and shift solenoids. A digital pressure regulator maintains hydraulic pressure within 0.9-3.2 bar with ±0.05 bar accuracy, ensuring consistent clutch engagement and smooth shifts even under varying turbo boost loads. An 8μm fine filter traps metallic debris and contaminants, protecting internal components from wear.
5. TCU Communication & Diagnostic Capabilities
The transmission connects to Tiggo 7’s TCU via a 16-pin connector, transmitting real-time data including fluid temperature, pressure, gear position, solenoid status, and torque converter lockup state. If a fault is detected (e.g., solenoid malfunction, low fluid pressure), the TCU stores specific diagnostic trouble codes (DTCs) such as P0750 (shift solenoid A malfunction) and illuminates the transmission warning light on the dashboard. Mechanics can use Chery-compatible diagnostic tools (e.g., Chery X431 Pro) to retrieve codes and perform targeted repairs.
6. Comprehensive Safety Protection
Park (P) Position: Features a hardened parking pawl (HRC 60) with a dual-locking mechanism that securely locks the output shaft, preventing vehicle rollaway when parked on slopes.
Reverse (R) Interlock: Requires the brake pedal to be depressed and vehicle speed ≤5 km/h before allowing reverse engagement, preventing accidental shifts.
Limp-Home Mode: If a critical fault is detected, the TCU limits the transmission to 3rd gear, reducing engine power to prevent further damage and allowing the driver to safely reach a repair facility.
Overheat Protection: Activates when fluid temperature exceeds 135°C, reducing engine power and triggering a warning to prevent thermal damage to the transmission and turbocharger.
1. OE-Precision Compatibility for All-New Chery Tiggo 7 (T1E Platform)
The Automatic Transmission Assembly 121000059AA is exclusively engineered as a direct replacement for the all-new generation Chery Tiggo 7 built on the T1E modular platform, specifically matching models equipped with 1.5T and 1.6T turbocharged engines. Adhering strictly to Chery’s OE design standards, it features ultra-precise matching of critical parameters: a customized bell housing flange for Tiggo 7’s engine interfaces, 22-spline input shaft, 27-spline output shaft, and mounting points with a tolerance of ±0.08mm. It also integrates a dedicated 16-pin electrical connector that seamlessly communicates with the Tiggo 7’s Transmission Control Unit (TCU), eliminating compatibility issues such as shift asynchrony, torque mismatch, or TCU communication failures—no modifications are required during installation.
2. High-Quality Refabrication for Like-New Performance
As a professionally refabricated assembly, the 121000059AA undergoes a rigorous 9-step renovation process tailored for Chery’s T1E platform: full disassembly and component classification, 3D laser scanning inspection of core parts (gears, valve body), performance testing (solenoid response, torque converter efficiency, hydraulic pressure retention), replacement of worn components with OE-matching parts (high-strength gears, precision solenoids, Viton rubber seals), ultrasonic cleaning with Chery-specified detergents, reassembly with torque-controlled fasteners, TCU protocol calibration, 8-hour dynamic shift simulation (mimicking Tiggo 7’s driving cycles), and final quality validation. All refabricated components meet or exceed Chery’s original standards, ensuring performance comparable to new OEM transmissions.
3. Durable Construction Optimized for Tiggo 7’s Turbo Powertrains
Gear System: Core planetary gear sets and main gears are crafted from 20CrNiMo alloy steel, processed through deep carburizing (depth: 1.2-1.5mm) and high-frequency quenching to achieve a surface hardness of HRC 60-63. This enables the assembly to withstand continuous torque loads of up to 290 Nm—perfectly matching the output of Tiggo 7’s 1.6T high-performance turbo engine.
Torque Converter: Equipped with a reinforced torque converter featuring an optimized impeller and turbine design, enhanced with a lockup clutch that reduces slippage and improves power transfer efficiency.
Housing & Hydraulics: The die-cast ADC12 aluminum alloy housing is reinforced with ribbing at stress points to resist vibration and thermal deformation. The integrated hydraulic valve body uses precision-machined passages and high-flow solenoids to handle the dynamic demands of turbocharged engines.
4. Optimized Shift Performance & Fuel Efficiency
Calibrated specifically for Tiggo 7’s 1.5T/1.6T power curves, the transmission features a refined shift logic that delivers response times of ≤220ms—18% faster than worn original transmissions. Its 9-speed automatic configuration (gear ratios: 1st 4.785, 2nd 2.985, 3rd 2.041, 4th 1.485, 5th 1.192, 6th 1.000, 7th 0.843, 8th 0.721, 9th 0.625) optimizes low-end torque for urban acceleration and high-end overdrive for highway efficiency. Compared to worn transmissions, it improves fuel economy by 10-12% at 120 km/h, reducing engine RPM by 250-300.
5. Cost-Effective with Low Maintenance Burden
Priced 40-45% lower than new Chery OEM automatic transmissions, the 121000059AA offers exceptional value for Tiggo 7 owners and repair shops. Its modular design allows independent replacement of key components (solenoid packs, valve body, torque converter) without disassembling the entire assembly, cutting maintenance labor time by 35%. It is fully compatible with Chery’s factory-specified ATF WS transmission fluid, eliminating the need for specialized fluids, and comes with a 18-month/30,000-kilometer warranty.
6. All-Climate Reliability for Diverse Driving Conditions
The transmission is engineered to perform reliably in extreme climates, with a operating temperature range of -40°C to 145°C. Its sealing system uses triple-lip Viton rubber seals and stainless steel gaskets to prevent fluid leakage, while the TCU integrates temperature and pressure monitoring to adapt to cold starts, high-temperature turbo operation, and high-altitude driving—ensuring stability for Tiggo 7 owners in diverse regions.
INQUIRE NOW 
