Searching for a genuine 4-speed automatic transmission assembly engineered to fit the Toyota Porte 1.3 L petrol powered by the 2NZ-FE engine, with OEM transmission part number 30500-52310? You’re in the right place.
This 4-speed automatic transmission unit is precision-engineered to match the drivetrain specifications of the Porte’s 1.3 L petrol platform — designed to deliver smooth gear engagement, consistent acceleration, efficient power transfer, and dependable long-term performance across city driving, highway cruising, and everyday use. Engineered for precise integration with the 2NZ-FE engine’s torque output, torque converter behaviour, and transmission control logic, this automatic gearbox helps restore refined drivability, predictable throttle response, and reliable performance expected from a factory-matched drivetrain.
Why Replacement Transmissions Are Sought
Owners commonly search for a Toyota Porte automatic transmission replacement when experiencing symptoms such as delayed or harsh gear shifts, slipping or inconsistent acceleration, unusual noise or vibration during gear changes, erratic RPM behaviour, transmission warning lights or diagnostic fault codes, reduced fuel economy, or inconsistent torque delivery.
Automatic transmissions are precision-calibrated systems that integrate closely with engine management, torque converter behaviour, and transmission control module (TCM) logic. Ensuring correct fitment and specification matching before purchase is essential to achieve smooth drivability, optimal performance, and long service life.
Why Transmission Fitment & Specification Matching Matters
This Toyota Porte 1.3 L petrol 4-speed automatic transmission (30500-52310) is ideal for buyers searching for a Toyota Porte automatic transmission, a direct OEM-compatible gearbox solution, or a replacement that restores factory-matched performance and drivability.
Automatic transmissions must align precisely with engine torque characteristics of the 2NZ-FE drivetrain, torque converter calibration and gear ratio mapping, transmission control logic and TCM communication, and ECU/TCM sensor integration and drivetrain coordination.
Installing a mismatched or incompatible unit can result in persistent warning lights, rough or unpredictable shifting, reduced fuel economy, overheating risk, erratic throttle response, and premature wear or early transmission failure.
Before Purchasing, Always Confirm
Compatible vehicle model, generation, and drivetrain layout (Toyota Porte)
Exact transmission type (4-speed automatic) and OEM part number 30500-52310
Wiring harness, mounting points, and linkage compatibility
ECU and TCM calibration and software compatibility
Verifying these details ensures precise fitment, seamless ECU–TCM communication, and dependable long-term performance you can rely on — whether replacing a worn unit or restoring smooth, factory-matched drivability and reliability.
