|  | | | BMW E39 Radiators - Page 3 | Coolant Expansion Tanks | | The coolant expansion tank provides an buffer for the coolant to 'overflow' to when the cooling system is running. Replace yours with a new one if there is lots of corrosion inside, or if it happens to leak. |
| | Coolant Expansion Tanks | | 17-11-1-436-381-M58 | Coolant Expansion Tank (cap not included), 525i Sedan/Touring (2001-03), 528i Sedan/Touring (9/98-00), 530i (2001-03), Each
Brand: OEM [More Info] |  |
| $68.75 |  | 
17-11-1-723-520-M9 | Coolant Expansion Tank (cap not included, coolant level sensor not included), 528i (1996-08/98), Each
Brand: Genuine BMW [More Info] | |
| $107.50 | | 
17-11-1-741-167-M9 | Coolant Expansion Tank (cap not included), 540i Sedan/Touring (1996-03), Each
Brand: Genuine BMW [More Info] | |
| $107.50 | | 
17-11-2-229-114-M9 | Coolant Expansion Tank (cap not included), M5 (2000-03), Each
Brand: Genuine BMW [More Info] | |
| $129.00 | | | Coolant Expansion Tank O-Rings | 
17-21-1-712-965-M9 | Lower O-Ring for Expansion Tank, 528i Sedan/Touring (1996-00), Each
Brand: Genuine BMW [More Info] | |
| $6.25 | | | Coolant Expansion Tank Bleeder Screw | | Bleeder Screw for Expansion Tank (Plastic, includes one O-Ring), E39 525i Sedan/Wagon, 528i Sedan/Wagon, 530i, 540i Sedan/Wagon, Each | 
17-11-1-712-788-M36 | Bleeder Screw for Expansion Tank (Plastic, includes one O-Ring), E39 525i Sedan/Wagon, 528i Sedan/Wagon, 530i, 540i Sedan/Wagon, Each
Brand: Febi [More Info] | |
| $2.00 | | | 17-11-1-712-788-M926 | Bleeder Screw for Expansion Tank (Plastic, includes one O-Ring), E39 525i Sedan/Wagon, 528i Sedan/Wagon, 530i, 540i Sedan/Wagon, Each
Brand: Genuine BMW-MINI [More Info] | |
| $5.00 | |
| 
17-11-1-712-788-M230 | Bleeder Screw for Expansion Tank (Brass, includes one O-Ring), E39 525i Sedan/Wagon, 528i Sedan/Wagon, 530i, 540i Sedan/Wagon, Each
Brand: Domestic Aftermarket [More Info] | |
| $4.25 | | | Coolant Expansion Tank Mounting Hardware | | Mounting Clip for Coolant Expansion Tank, 525i Sedan/Touring (2001-03), 528i Sedan/Touring (1996-00), 530i (2001-03), Each | 
17-11-1-723-580-M9 | Mounting Clip for Coolant Expansion Tank, 525i Sedan/Touring (2001-03), 528i Sedan/Touring (1996-00), 530i (2001-03), Each
Brand: Genuine BMW [More Info] | |
| $6.75 | | 
17-11-1-723-580-M200 | Mounting Clip for Coolant Expansion Tank, 525i Sedan/Touring (2001-03), 528i Sedan/Touring (1996-00), 530i (2001-03), Each
Brand: MTC [More Info] | |
| $3.00 | |
| | Upper Mounting Clip for Coolant Expansion Tank, 540i Sedan/Touring (1996-03), Each | 
17-11-1-723-117-M9 | Upper Mounting Clip for Coolant Expansion Tank, 540i Sedan/Touring (1996-03), Each
Brand: Genuine BMW [More Info] | |
| $6.75 | | 
17-11-1-723-117-M200 | Upper Mounting Clip for Coolant Expansion Tank, 540i Sedan/Touring (1996-03), Each
Brand: MTC [More Info] | |
| $3.00 | | Voltage Regulator for Cooling System | 
17-21-1-437-772-M9 | Voltage Regulator for Cooling System, 540i/Wagon (9/98-01), Each
Brand: Genuine BMW [More Info] | |
| $127.75 | |
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