Appropriate for: for BMW 325 E30 1986-1987 L6 2.7L for BMW 325e E30 1984-1987 L6 2.7L for BMW 325es E30 1986-1987 L6 2.7L for BMW 325i E30 1987 L6 2.5L for BMW 325is E30 1987 L6 2.5L for BMW 528e E28 1982-1988 L6 2.7L Product Details: OE Number:17111707540 Material: PP Color: White Cap Includes: No Dimension: 29x15.5x14cm / 11.41"x6.10"x5.51"(L*W*H) Fitment Type: Direct Replacement Product Function: Stores excess coolant fluid until required, avoid loss of lubrication, overheating and metal corrosion, reduce your engine's fuel consumption and cylinder bore wear. The cooling tank will dissipate heat through the radiator to ensure that the engine operating temperature stay within normal range. Replace the coolant radiator reservoir tank to keep your engine at the right temperature under a variety of conditions and improve efficiency of heating system. Installation Steps: 1. Turn off and cool down the car, remove the bolts and the reservoir. 2. Allow the remaining coolant to flow back into the drain pan. 3. Replace the new reservoir tank and reinstall the coolant hose to the radiator and tighten the clamp. 4. Finally check if function well. Item List:1 Pc Coolant Reservoir Water Expansion Tank