BMW 318i 318is 318ti 1994-1997 Automatic Transmission 4-Speed 4L30E Remanufactured

Description

Restoring crisp 1-2 upshifts on compact classic BMWs, the BMW 318i 318is 318ti 1994-1997 automatic transmission 4-speed 4L30E remanufactured gearbox eliminates brake band slip and valve body cross-leaks. High-mileage 4L30E transmissions suffer from worn second-gear brake bands and leaking shift solenoids, causing slipping second-gear shifts and transmission warning lights on the dashboard. This remanufactured unit incorporates an upgraded brake band, re-machined front oil pump bushings, new shift solenoids, and a rebuilt torque converter.

Technicians dismantle both the main transmission pan and the forward adapter pan, replacing all paper gaskets and molded rubber lip seals with high-temperature elastomer materials. The front oil pump housing receives precision machine work and a new bronze drive bushing, preventing converter hub galling and stopping front seal leaks. Every unit runs on automated load dynos through multiple warm-up cycles, confirming that fluid pressure and shift timing match factory BMW specifications.

Technical Specifications of BMW 4L30E (1994-1997)

• Four-Speed Dual-Pan GM Architecture: Features main oil pan and forward overdrive adapter pan for 1.8L and 1.9L 4-cylinder engines.
• Upgraded Second-Gear Brake Band: High-friction composite lining prevents 1-2 shift slip and drum scoring under acceleration.
• Re-Machined Front Oil Pump Housing: New bronze drive bushing and Viton seal eliminate front torque converter fluid leaks.
• New Shift and PWM Lockup Solenoids: Replaces tired electrical solenoids to restore crisp shift transitions between all four gears.
• Rebuilt Balanced Torque Converter: New damper springs and internal lockup clutch stop highway cruising vibration.
• Complete Gasket and O-Ring Overhaul: High-temperature seals prevent external fluid weeping and internal pressure loss.

Brake Band Upgrades & Valve Body Calibration

Designed for compact BMW E36 models, this 4-speed automatic transmission delivers factory-quiet operation and smooth shifts.

• Upgraded second-gear brake band lining eliminates slipping shifts between first and second gear under hard acceleration.
• New shift solenoids and PWM lockup valves eliminate delayed gear engagement when shifting into Drive or Reverse.
• Dual-pan sealing overhaul stops fluid leaks between the main transmission case and forward overdrive extension housing.

Subframe Alignment & Driveshaft Output Fitment

Engineered for 1994 to 1997 BMW 318i, 318is, and 318ti models with M42 or M44 engines, this rear-wheel-drive transmission bolts to factory engine blocks and guibo flanges.

Warranty Coverage & Field Maintenance

• Commercial European service shops receive 3-Year or 100,000-mile parts warranty protection against internal component failure.

Thoroughly flush the radiator cooler circuit, install a new transmission filter in the main pan, and fill with approved synthetic Dexron III fluid. Check fluid level through the pan check plug with the engine idling in Park. Order the BMW 318i 318is 318ti 1994-1997 automatic transmission 4-speed 4L30E remanufactured gearbox from Mulmotor.com for guaranteed factory-fresh units, complete manufacturer warranty coverage, and dedicated commercial equipment support.