Subaru Subaru Impreza 2000-2007 Drivetrain Specifications

The 2000-2007 Subaru Impreza drivetrain is compatible with AWD (All-Wheel Drive) systems, including the 5-speed manual and 4-speed automatic transmissions. It supports EJ20 and EJ25 engines, with specific compatibility for differential ratios of 3.90:1 and 4.11:1. Ensure the drivetrain components match the vehicle's model year and trim level for proper fitment and performance.

Regular maintenance includes inspecting and replacing the transmission fluid every 30,000-60,000 miles, checking differential fluid every 30,000 miles, and ensuring the driveshaft and CV joints are lubricated and free of damage. Inspect the clutch system (if manual) for wear and replace as needed. Regularly check for leaks or unusual noises, which may indicate drivetrain issues.

To replace drivetrain components, first, lift the vehicle securely. Remove the exhaust system, driveshaft, and transmission crossmember. Disconnect the transmission and differential mounts. For AWD models, ensure the rear differential is properly aligned. Install new components in reverse order, torquing bolts to manufacturer specifications. Refill fluids and test for proper operation.

Common issues include grinding noises, vibrations, or difficulty shifting. Check for worn CV joints, damaged driveshafts, or low fluid levels. Inspect the clutch system for wear if manual. For AWD models, ensure the center differential is functioning correctly. Use diagnostic tools to identify error codes and address specific component failures.

Upgrade to high-performance transmission and differential fluids for better lubrication. Install aftermarket performance clutches for manual models. Ensure proper alignment and balance of drivetrain components. Regularly inspect and replace worn parts. Consider upgrading to a limited-slip differential for improved traction and handling.