Gear differential: Differential speed is realized by means of gear meshing.
Anti-skid differential: When the wheels are slipping, a series of complex devices distribute the power to the slipping wheels to achieve better traction and stability.

The main reducer assembly is a critical component in TOYOTA vehicles, responsible for transmitting power from the transmission to the wheels while adjusting speed and torque. When wear, noise, or performance issues arise, opting for a high-quality TOYOTA Main Reducer Assembly Replacement becomes essential to restore the vehicle’s optimal functionality.
This replacement assembly is engineered to match TOYOTA’s strict standards, ensuring seamless compatibility with various models. A key feature lies in its precise speed ratio configurations, including 9:41, 10:41, 8:39, 10:43, 8:43, 9:38, and 10:39. These ratios are carefully calibrated to balance power delivery and fuel efficiency, adapting to different driving conditions—whether cruising on highways or navigating urban roads. Each ratio works in tandem with the assembly’s internal components to ensure smooth power transfer, reducing strain on the vehicle’s drivetrain.
Another vital part of the replacement assembly is the half shaft, which comes with 30 teeth. The 30-tooth half shaft is designed for robust performance, ensuring a secure connection between the main reducer and the wheels. Its durable construction minimizes wear over time, even under heavy loads, contributing to the assembly’s long service life.
The assembly also integrates two core differential systems to boost vehicle stability and traction. The gear differential achieves differential speed through precise gear meshing, allowing the left and right wheels to rotate at different speeds when turning—preventing tire scuffing and improving maneuverability. For more challenging road conditions, the anti-skid differential plays a crucial role. When wheels start slipping (such as on wet or muddy surfaces), its complex internal devices quickly redistribute power to the slipping wheels. This ensures better traction, reducing the risk of skidding and enhancing overall driving safety.
Choosing TOYOTA Main Reducer Assembly Replacement not only fixes existing issues but also upgrades the vehicle’s performance. It combines reliable speed ratio options, a durable 30-tooth half shaft, and advanced differential systems to deliver a smooth, stable, and efficient driving experience. Whether for daily commuting or off-road adventures, this replacement assembly is a trusted choice for maintaining TOYOTA’s legendary performance.