Searching for a genuine CVT automatic transmission assembly engineered to fit the Nissan Dayz 2014 (Model Code DBA-B21W) with OEM transmission part number 31020-6A00M? You’re in the right place.
This Continuously Variable Transmission (CVT) automatic unit is precision-built to match the drivetrain specifications of the Dayz compact platform — designed to deliver smooth, seamless acceleration, efficient power delivery, and dependable long-term performance across city driving, highway cruising, and everyday commutes. Engineered for seamless integration with the Dayz engine’s torque characteristics, CVT behaviour, and transmission control logic, this unit helps restore refined drivability, consistent throttle response, and reliable performance expected from a factory-matched drivetrain.
Why Replacement Transmissions Are Sought
Owners commonly search for a Nissan Dayz automatic transmission replacement when experiencing symptoms such as:
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Delayed, slipping, or inconsistent acceleration
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Unusual noise, vibration, or “shudder” during gear transitions
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Erratic RPM behaviour or belt/chain shudder under load
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CVT-related warning lights or diagnostic fault codes
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Reduced fuel economy or inconsistent torque delivery
Because CVT automatic transmissions are precision-tuned systems that integrate tightly with engine management, torque converter mapping, and transmission control module (TCM) logic, ensuring correct fitment and specification matching before purchase is essential for optimal performance and longevity.
Why Transmission Fitment & Specification Matching Matters
This Nissan Dayz 2014 CVT automatic transmission (31020-6A00M) is ideal for buyers searching for:
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A Nissan Dayz CVT automatic transmission
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A direct OEM-compatible gearbox solution
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A replacement that restores factory-matched performance and drivability
Automatic transmissions — especially CVTs — must align precisely with:
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Engine output and torque characteristics of the Dayz drivetrain
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Torque converter calibration and CVT ratio mapping
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Transmission control logic and TCM communication
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ECU/TCM sensor integration and drivetrain coordination
Installing a mismatched or incompatible unit can result in persistent warning lights, rough or unpredictable power delivery, reduced fuel economy, overheating risk, erratic throttle response, and premature wear or early component failure.
Before Purchasing, Always Confirm
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Compatible vehicle model and generation (Nissan Dayz 2014 — DBA-B21W)
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Exact transmission variant (CVT automatic) and OEM part number 31020-6A00M
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Wiring harness and mounting compatibility
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Control-module (ECU/TCM) calibration and software integration
Verifying these details ensures precise fitment, seamless ECU/TCM communication, and dependable long-term performance you can trust — whether you’re replacing a worn unit or restoring smooth, factory-matched drivability and reliability.
