Replace Subaru Impreza Transmission Gasket. Browse Subaru Impreza Transaxle Seal Replacement Cost & Subaru Impreza Transmission Dipstick Tube Seal. Maintaining the transmission seals of your Subaru Impreza is crucial for preventing fluid leaks and ensuring smooth gear shifts. Regular inspection for signs of wear such as transmission slippage or fluid on your driveway can indicate it's time for a replacement. To extend the lifespan of these seals, use high-quality transmission fluid and avoid harsh driving conditions. When selecting a new seal, opt for OEM-grade materials to ensure compatibility and longevity. Installation requires precision, so either follow a trusted guide meticulously or consider professional fitting to protect your investment. With the right care and quality parts, your Impreza's transmission seals will safeguard your vehicle's performance and reliability.