Shop replacement gearbox and transmission parts for manual and automatic vehicles. The transmission transfers engine power to the wheels and relies on mechanical, hydraulic and electronic components depending on its design.

Transmission components can include gearbox filters, seals, gaskets, mounts, solenoids, sensors, pumps and other replacement parts. The exact components vary significantly between transmission types and vehicle specifications.

Transmission problems can appear as harsh shifting, slipping, delayed engagement, unusual noises, warning lights or difficulty selecting gears. These symptoms can have several causes, including fluid condition, electrical faults, hydraulic problems or mechanical wear.

Correct identification is important when ordering gearbox parts. Use the vehicle's VIN, registration number, make, model, engine, year and transmission information where available. Transmission codes and original part numbers can be especially useful.

HASA Automotive's gearbox category is designed to support routine servicing and transmission repair work.

For associated drivetrain components, explore Clutch, Drive Shaft & CV Joint, and Propshafts & Differentials. For transmission fluids and maintenance products, visit Oils & Fluids.