Searching for a Nissan Roox 5AA-B44A BR06-SM21 CVT automatic transmission 31020-X161A (2022) with correct specifications? You’re in the right place. This genuine Nissan automatic transmission assembly — identified by model code BR06-SM21 and OEM Part Number 31020X161A — is engineered for precise fitment, smooth shifting, and dependable long-term performance in compatible Nissan Roox vehicles.
This automatic transmission assembly fits Nissan Roox (2022) models with chassis code 5AA-B44A equipped with the BR06-SM21 CVT automated gearbox paired to the factory-specified drivetrain. When matched with Nissan’s efficient and responsive powertrain systems, this CVT unit delivers seamless gear transitions, smooth torque delivery, and dependable driving performance — ideal for city commuting, daily errands, and urban traffic conditions.
Owners typically search for a replacement automatic transmission when experiencing symptoms such as:
• Slipping or delayed gear engagement
• Harsh or noisy gear changes
• Transmission warning lights or diagnostic fault codes
• Reduced power delivery or inconsistent acceleration
• Unusual gearbox noise, vibration, or hesitation
Because CVT automatic transmissions must be matched precisely to engine characteristics, pulley and belt ratios, torque converter calibration, shift logic parameters, and ECU/TCU communication, confirming the exact model code and OEM part number before purchase is essential to ensure correct fitment and long service life.
Why Transmission Model & Part Number Matching Matters
This automatic transmission assembly is ideal for buyers searching for a Nissan Roox automatic transmission for sale, a CVT gearbox replacement, or a complete automatic transmission solution that restores smooth operation and dependable performance.
Automatic transmissions are precision-engineered systems tuned to work with specific:
• Engine power and torque curves
• CVT pulley and belt design
• Torque converter/CVT calibration
• Shift logic and control mapping
• Transmission control (ECU/TCU) communication
Installing a mismatched unit can lead to:
• Transmission warning lights or diagnostic fault codes
• Poor acceleration or inconsistent drivability
• Harsh or delayed gear changes
• Reduced fuel economy and overheating risk
• Premature wear or component failure
Before purchasing, always confirm:
• Correct transmission model (BR06-SM21)
• Exact OEM part number (31020X161A)
• Compatible vehicle model and chassis code (Nissan Roox 5AA-B44A 2022)
Verifying these details ensures smooth installation, accurate ECU/TCU communication, and dependable long-term performance you can trust.
