A gearbox is one of the most essential and complex components of your vehicle. Over time, continuous driving, heat, friction, and worn-out parts can lead to major gearbox issues. When repairs are no longer enough to restore full performance, a complete gearbox overhaul becomes the most effective solution.
At BEST AUTO GEARBOX SERVICE, we specialize in full gearbox overhauling for all types of cars—local, Japanese, continental, and luxury models. Our experienced technicians follow a precise, step-by-step rebuilding process to ensure your transmission functions like new, delivering smooth performance and long-lasting reliability.
A gearbox overhaul is recommended when your transmission shows signs of severe wear, such as:
Hard or delayed gear shifting
Gear slipping or sudden loss of power
Loud grinding or whining noises
Burning smell or overheating
Contaminated or burnt transmission fluid
Frequent leaks or pressure loss
Multiple internal part failures
Repeated problems even after minor repairs
If these issues persist, a full overhaul can restore your gearbox’s performance and extend its lifespan significantly.
We follow a careful, comprehensive overhaul process to ensure every component functions perfectly:
The gearbox is safely removed from the vehicle for a full internal inspection.
Every internal part—clutch packs, gears, solenoids, valve body, torque converter, seals, and gaskets—is dismantled with precision.
We identify worn-out, damaged, or failing components that cause performance issues.
Faulty and worn parts are replaced with:
OEM parts
High-quality in-house parts
Or re-engineered parts (if rare or unavailable)
This ensures durability and smooth operation.
All internal components, passages, filters, and the valve body are professionally cleaned to remove debris, sludge, and metal particles.
The gearbox is reassembled following strict technical guidelines to ensure perfect alignment and pressure balance.
We use manufacturer-recommended ATF and brand-new seals/gaskets to prevent future leaks.
Advanced diagnostic tools are used for:
Solenoid calibration
Pressure setting
TCM/ECU synchronization
Every overhauled gearbox undergoes:
Bench testing
Road testing
Diagnostic scanning
to ensure it performs flawlessly.
A proper overhaul offers many long-term advantages:
Restores smooth and responsive gear shifts
Improves fuel efficiency
Increases gearbox lifespan
Reduces overheating and noise
Prevents future breakdowns
Offers better driving comfort and safety
More cost-effective than full gearbox replacement
Skilled and experienced gearbox specialists
Advanced diagnostic and overhaul equipment
High-quality spare parts (OEM, in-house & re-engineered)
Transparent, honest service
Fast turnaround with guaranteed results
Affordable and reliable solutions
Your vehicle is in the hands of trained professionals who ensure precision and care at every stage of the overhaul process.
A complete gearbox overhaul can give your vehicle a new life. At BEST AUTO GEARBOX SERVICE, we make sure your transmission performs at its highest potential—providing you with a smooth, powerful, and trouble-free driving experience.