Get the Best Priced BMW 325i Expansion Tank
- Fast Shipping
- 30-Day Return Policy
- Low Prices
BMW 325i Replacement Expansion Tank Information
The elegant design and reliable performance of the BMW make your daily drives more enjoyable. When it comes to style and enduring design car buyers seek out the innovation that is featured in every BMW vehicle. Is it smart to lay out a large sum for a great luxury vehicle, only to skimp on new OEM or aftermarket parts and components? To preserve the comfort and style you chose with your BMW 325i, it's critical to use only the very best new OEM car parts. Luxurious cars like your well-appointed BMW 325i were intended to be used carefully and then serviced and maintained. The BMW in your carport was built using care and expertise; it ought to have new replacement components of a similar high level of quality. Your car has a place in your heart because of its excellent performance and great style, and to have it humming in its best shape you'll need the acme in top-notch parts and accessories. You bought a performance-optimized car to take advantage of its awesome power and performance, support that investment by installing high quality replacement parts. The BMW 325i Expansion Tank can fail because of harsh weather or simple wear; when this occurs a new one should be installed to maintain the car's cooling systems in top condition. Your BMW 325i Expansion Tank permits the gas in the radiator to swell because of the higher temperature and rising pressure. BMW 325i Expansion Tanks provide room for the cooling fluid to expand as it heats up, saving your radiator from bursting or boiling over, or cooling fluid from overflowing from your cooling system. Since you would not consider something other than a BMW when you selected your car or truck, why settle for anything other than the best parts and service? Whether you own a smokin' hot rod or everyday Detroit metal, we have all the parts and accessories you are searching for right here. No matter whether you drive a classic roadster or a sport utility vehicle, we have all the parts and accessories you want right on site at PartsGeek.com.
They are available for the following BMW 325i years: 2006, 2005, 2004, 2003, 2002, 2001, 1995, 1994, 1993, 1992, 1991, 1990, 1989, 1988, 1987, 06, 05, 04, 03, 02, 01, 95, 94, 93, 92, 91, 90, 89, 88, 87. This part is also sometimes called BMW 325i Radiator Overflow Tank. We stock expansion tank parts for most BMW models including X5, 528i, 328i, X3, 530i, 323i, 740iL, 540i, 525i, 330Ci, 335i, 325Ci, 330i, Z4, 325xi, 535i, 750Li, 740i, 545i, 745Li, 330xi, Z3, 650i, M3, 550i, 323Ci, 645Ci, 750i, 745i, 325is, 750iL, 335i xDrive, 328Ci, 530xi, 328is, 535xi, 335xi, 535i xDrive, 318i and 323is.
We stock these Expansion Tank brands for the BMW 325i: Replacement, Behr, Original Equipment, Hella, Metrix, Action Crash, APA/URO Parts, ContiTech, SKP, API, DIY Solutions and Brock.

![]() ![]() Click to Enlarge ![]() Click to Enlarge 4.7 Stars
Replacement 123-007
Expansion Tank Close
Loading Reviews...
Our List Price: $41.95
with FREE Shipping
Product SKU: 123-007
Product Note: Engine Coolant Reservoir -- RADIATOR COOLANT OVERFLOW TANK
Important Product Info: OEM# 17117573781
Condition: New
Shipping Options:
Free Ground Shipping
|
![]() ![]() Click to Enlarge ![]() Click to Enlarge 4.7 Stars
Replacement 123-007
Expansion Tank Close
Loading Reviews...
Our List Price: $41.95
with FREE Shipping
Product SKU: 123-007
Product Note: Engine Coolant Reservoir -- RADIATOR COOLANT OVERFLOW TANK
Important Product Info: OEM# 17117573781
Condition: New
Shipping Options:
Free Ground Shipping
|
![]() ![]() Click to Enlarge (53 Reviews) 4.9 Stars
Behr W0133-1797677
Expansion Tank Close
Loading Reviews...
Product List Price: $127.36
Our List Price: $38.58
Product SKU: W0133-1797677
Important Product Info: w/o Cap or Sensor
Condition: New
Made By: OEM
(Original Equipment Manufacturer) - a replacement part made by the manufacturer of the original part. Shipping Options:
Ground, Overnight, 2 Day
|
![]() ![]() Click to Enlarge (53 Reviews) 4.9 Stars
Behr W0133-1797677
Expansion Tank Close
Loading Reviews...
Product List Price: $127.36
Our List Price: $38.58
Product SKU: W0133-1797677
Important Product Info: w/o Cap or Sensor
Condition: New
Made By: OEM
(Original Equipment Manufacturer) - a replacement part made by the manufacturer of the original part. Shipping Options:
Ground, Overnight, 2 Day
|
![]() ![]() Click to Enlarge (53 Reviews) 4.9 Stars
Behr W0133-1797677
Expansion Tank Close
Loading Reviews...
Product List Price: $127.36
Our List Price: $38.58
Product SKU: W0133-1797677
Important Product Info: w/o Cap or Sensor
Condition: New
Made By: OEM
(Original Equipment Manufacturer) - a replacement part made by the manufacturer of the original part. Shipping Options:
Ground, Overnight, 2 Day
|
![]() ![]() Click to Enlarge (53 Reviews) 4.9 Stars
Behr W0133-1797677
Expansion Tank Close
Loading Reviews...
Product List Price: $127.36
Our List Price: $38.58
Product SKU: W0133-1797677
Important Product Info: w/o Cap or Sensor
Condition: New
Made By: OEM
(Original Equipment Manufacturer) - a replacement part made by the manufacturer of the original part. Shipping Options:
Ground, Overnight, 2 Day
|
![]() ![]() Click to Enlarge (53 Reviews) 4.9 Stars
Behr W0133-1797677
Expansion Tank Close
Loading Reviews...
Product List Price: $127.36
Our List Price: $38.58
Product SKU: W0133-1797677
Important Product Info: w/o Cap or Sensor
Condition: New
Made By: OEM
(Original Equipment Manufacturer) - a replacement part made by the manufacturer of the original part. Shipping Options:
Ground, Overnight, 2 Day
|
![]() ![]() Click to Enlarge (12 Reviews) 4.8 Stars
Original Equipment W0133-1797677
Expansion Tank Close
Loading Reviews...
Product List Price: $127.36
Our List Price: $65.58
Product SKU: W0133-1797677
Important Product Info: w/o Cap or Sensor
Condition: New
Made By: OEM
(Original Equipment Manufacturer) - a replacement part made by the manufacturer of the original part. Shipping Options:
Ground, Overnight, 2 Day
|
![]() ![]() Click to Enlarge (12 Reviews) 4.8 Stars
Original Equipment W0133-1797677
Expansion Tank Close
Loading Reviews...
Product List Price: $127.36
Our List Price: $65.58
Product SKU: W0133-1797677
Important Product Info: w/o Cap or Sensor
Condition: New
Made By: OEM
(Original Equipment Manufacturer) - a replacement part made by the manufacturer of the original part. Shipping Options:
Ground, Overnight, 2 Day
|
![]() ![]() Click to Enlarge (12 Reviews) 4.8 Stars
Original Equipment W0133-1797677
Expansion Tank Close
Loading Reviews...
Product List Price: $127.36
Our List Price: $65.58
Product SKU: W0133-1797677
Important Product Info: w/o Cap or Sensor
Condition: New
Made By: OEM
(Original Equipment Manufacturer) - a replacement part made by the manufacturer of the original part. Shipping Options:
Ground, Overnight, 2 Day
|
![]() ![]() Click to Enlarge (12 Reviews) 4.8 Stars
Original Equipment W0133-1797677
Expansion Tank Close
Loading Reviews...
Product List Price: $127.36
Our List Price: $65.58
Product SKU: W0133-1797677
Important Product Info: w/o Cap or Sensor
Condition: New
Made By: OEM
(Original Equipment Manufacturer) - a replacement part made by the manufacturer of the original part. Shipping Options:
Ground, Overnight, 2 Day
|
![]() ![]() Click to Enlarge (6 Reviews) 5 Stars
Hella 376755111
Expansion Tank Close
Loading Reviews...
Our List Price: $35.43
Product SKU: 376755111
Product Note: New Perfect fit Engine Coolant Reservoir -- OE SUPPLIER - Behr Hella Service is the thermal management expert- from air conditioning to engine cooling.; 362xx128
Condition: New
Shipping Options:
Ground
|
![]() ![]() Click to Enlarge (27 Reviews) 4.9 Stars
Metrix W0133-1614860
Expansion Tank Close
Loading Reviews...
Product List Price: $101.47
Our List Price: $29.58
Product SKU: W0133-1614860
Important Product Info: w/o Sensor
Condition: New
Shipping Options:
Ground, Overnight, 2 Day
|
![]() ![]() Click to Enlarge (6 Reviews) 5 Stars
Hella 376755111
Expansion Tank Close
Loading Reviews...
Our List Price: $35.43
Product SKU: 376755111
Product Note: New Perfect fit Engine Coolant Reservoir -- OE SUPPLIER - Behr Hella Service is the thermal management expert- from air conditioning to engine cooling.; 362xx128
Condition: New
Shipping Options:
Ground
|
![]() ![]() Click to Enlarge (27 Reviews) 4.9 Stars
Metrix W0133-1614860
Expansion Tank Close
Loading Reviews...
Product List Price: $101.47
Our List Price: $29.58
Product SKU: W0133-1614860
Important Product Info: w/o Sensor
Condition: New
Shipping Options:
Ground, Overnight, 2 Day
|
![]() ![]() Click to Enlarge (2 Reviews) 5 Stars
Action Crash BM3014102
Expansion Tank Close
Loading Reviews...
Product List Price: $127.36
Our List Price: $39.98
Product SKU: BM3014102
Product Note: COOLANT RECOVERY TANK FOR MODELS WITH 6-CYLINDER ENGINE
Condition: New
Quality: Premium - High quality new replacement part.
Shipping Options:
Ground
|
![]() ![]() Click to Enlarge (2 Reviews) 5 Stars
APA/URO Parts 17 11 7 573 781
Expansion Tank Close
Loading Reviews...
Our List Price: $39.73
Product SKU: 17 11 7 573 781
Product Note: Coolant Expansion Tank
Condition: New
Shipping Options:
Ground
|
Our List Price: $45.08
Product SKU: EPT0018
Product Note: Engine Coolant Reservoir
Features:
Condition: New
Shipping Options:
Ground
|
![]() ![]() Click to Enlarge 5 Stars
SKP SK603334
Expansion Tank Close
Loading Reviews...
Our List Price: $31.98
Product SKU: SK603334
Product Note: Engine Coolant Reservoir
Features:
Condition: New
Shipping Options:
Ground
|
Our List Price: $39.98
Product SKU: 18489-07444726
Product Note: Engine Coolant Reservoir
Condition: New
Shipping Options:
Ground
|
Our List Price: $68.95
with FREE Shipping
Product SKU: HVA02844
Product Note: Engine Coolant Reservoir -- L6 3.0L
Features:
Condition: New
Shipping Options:
Free Ground Shipping
|
Our List Price: $39.98
with FREE Shipping
Product SKU: 8667-0004
Product Note: Engine Coolant Reservoir -- 99-06 BMW 3 Series E46 Coolant Recovery Tank Without Sensor-Cap 01-06 BMW X5 E53 3.0L 04-10 BMW X3 E83
Condition: New
Shipping Options:
Free Ground Shipping
|
Our List Price: $42.98
with FREE Shipping
Product SKU: 17111707540
Product Note: Engine Coolant Reservoir
Features:
Position of Product: Front
Condition: New
Shipping Options:
Free Ground Shipping
|
- 02 2002 BMW 325i Accessory Belt Idler Pulley INA
- 94 1994 BMW 325i Fan Blade APA/URO Parts
- 03 2003 BMW 325i Fan Clutch OEQ
- 01 2001 BMW 325i Fan Shroud Genuine
- 02 2002 BMW 325i Radiator Behr w/ Drain Plug
- 03 2003 BMW 325i Radiator Fan TYC
- 06 2006 BMW 325i Radiator Hose Upper Rein
- 06 2006 BMW 325i Radiator Support Action Crash - Wagon
- 06 2006 BMW 325i Thermostat Mahle - Behr
- 94 1994 BMW 325i Thermostat Housing APA/URO Parts Aluminum Upgrade
- 06 2006 BMW 325i Water Pump Pierburg with Screws
Research on Expansion Tank for BMW 325i
Expansion Tank 101
Without a properly functioning expansion tank, your BMW can overheat. The expansion tank is a vital component to your heating and cooling system. This system is first filled with cool water from your supply line. Then the pressure of the expansion tank is equal to the supply line pressure, keeping the diaphragm pressing up tightly against the tank. As the temperature of the water in the system rises and your BMW 523i expansion tank expands, it pushes against the air cushion to absorb added pressure. As the system pressure is becomes greater, excess coolant is forced out the radiator and into the expansion tank.
Basically the tank's ability to compress absorbs excess pressure that occurs as a result of thermal expansion. It keeps the rest of your system from being damaged due to excessive pressure.
Is My BMW 325i Expansion Tank Malfunctioning?
Problems with your BMW 325i expansion tank can result from either a leakage or blockage, or could indicate a bigger problem leads to a complete malfunction. To determine whether your BMW 325i expansion tank is malfunctioning, be on the lookout for a few potential problems. If you are the DIY type, be sure you have the necessary knowledge and tools before starting the project. A pipe wrench, old towels and the type of waterproof tape that plumbers use are on the short list. Follow all directions carefully.
The first clue that you need a BMW 325i expansion tank replacement is simply excess water. As the heated water expands, as explained above, its physical volume increases and that creates pressure. If this extra water is blocked or damaged, the water has nowhere to go and you have a leak.
A Potentially Explosive Situation
If gauges or valves are damaged, the water in-flow and out-flow is disrupted and excess water build up can occur. This creates a somewhat dangerous situation because the tank could explode. Take care with your BMW 325i expansion tank removal. It can be done but care must be taken to avoid accidents.
Sometimes there is excess water condensation. This is often because the tank is holding too much water. Condensation problems also occur in high humidity. That is why you see so many cars overheating in the summer. But keep your cool. There is a solution. A new expansion tank will cost you roughly between $51.95 to $125.95.
Partsgeek.com to the Rescue
Partsgeek.com has a wide variety of tank sizes to fit very system. Whether you are looking for a 2002 BMW 325i expansion tank replacement or other model year, find the exact size and model tank you are looking at rock bottom prices at partsgeek.com.
Got the product for half the retail price and very quickly!! Car is working perfectly now!!
pretty good give better discount
Very fast service and prices!
I received my part in a timely matter.
excellent prices... fast searches on line...
exact fit...