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Mercedes 300SD Expansion Tank Reviews
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Shop Mercedes 300SD Replacement Expansion Tank

While the expansion tank on your Mercedes 300SD is not a critical part that contributes to your vehicle's performance, it's an important part of the engine cooling setup that provides a termination point for a close-looped system. The expansion tank collects the overflow radiator fluid/coolant when it has reached boiling temperature and must escape the confines of engine/radiator system. Without an expansion tank, this pressurized, boiling liquid would simply have no place to go, short of blowing out a hose or the radiator cap. A cracked or broken expansion tank isn't quite as bad as no tank at all, but a leaky tank will allow coolant to flow to the ground, requiring vigilance in continually keeping the system topped up. A replacement operation is neither expensive nor difficult. Parts Geek has the part, designed to fit 1978-1993 Mercedes 300SD sedans, from manufacturers including Genuine, the original part maker.

We stock these Expansion Tank brands for the Mercedes 300SD: ReplacementAPA/URO PartsFebiTRQGenuineSKP

Expansion Tanks available for the following Mercedes 300SD years: 1985, 1984, 1983, 1982, 1981, 1980, 1979, 1978, 85, 84, 83, 82, 81, 80, 79, 78. This part is also sometimes called Mercedes 300SD Radiator Overflow Tank. We stock expansion tank parts for most Mercedes models including ML320, C230, SLK230, ML350, S500, ML500, ML430, S430, E350, GL450, S550, C240, E320, SL500, C280, E500, 560SL, CLS550, SLK320, 190E, CLA250, 300E, CLK430, 450SL, R350, Sprinter 2500, C320, CLS500, CLK320, 300D, CLK500, 300SDL, 380SL, ML55 AMG, S55 AMG, Sprinter 3500, CL500, R500, C300 and 500SL.

Select your 300SD year

Review Fitment Notes
Showing 16 of 80 Results
Replacement Expansion Tank - for 1984 Mercedes 300SD - 123-059 Click to Enlarge
4.5 Stars
Replacement 123-059
Expansion Tank
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Part Number: 123-059
Brand: Replacement
Notes: Engine Coolant Reservoir -- ENGINE COOLANT RADIATOR OVERFLOW TANK BOTTLE WITH CAP
Product Remark: With Level Sensor Port; Level Sensor not included
Condition: New
Shipping Options: Ground
$27.95
View Details
This Part Fits:
Catalog: E
Vehicle
1984 Mercedes 300SD
APA/URO Parts Expansion Tank - for 1983 Mercedes 300SD - W0133-1623455 Click to Enlarge
5 Stars
APA/URO Parts W0133-1623455
Expansion Tank
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Part Number: W0133-1623455
Brand: APA/URO Parts
Detailed Notes: Early models may require (1) 126 500 00 84 Plug Kit to accommodate opening for Coolant Level Sensor.
Condition: New
Shipping Options: Ground, Overnight, 2 Day
List Price:
$38.50
Our Price: $28.58
(10) In Stock
This Part Fits:
Catalog: A
Vehicle
1983 Mercedes 300SD
APA/URO Parts Expansion Tank - for 1984 Mercedes 300SD - W0133-1623455 Click to Enlarge
5 Stars
APA/URO Parts W0133-1623455
Expansion Tank
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Part Number: W0133-1623455
Brand: APA/URO Parts
Detailed Notes: Early models may require (1) 126 500 00 84 Plug Kit to accommodate opening for Coolant Level Sensor.
Condition: New
Shipping Options: Ground, Overnight, 2 Day
List Price:
$38.50
Our Price: $28.58
(10) In Stock
This Part Fits:
Catalog: A
Vehicle
1984 Mercedes 300SD
APA/URO Parts Expansion Tank - for 1979 Mercedes 300SD - W0133-1623455 Click to Enlarge
5 Stars
APA/URO Parts W0133-1623455
Expansion Tank
Loading Reviews...
Part Number: W0133-1623455
Brand: APA/URO Parts
Detailed Notes: Early models may require (1) 126 500 00 84 Plug Kit to accommodate opening for Coolant Level Sensor.
Condition: New
Shipping Options: Ground, Overnight, 2 Day
List Price:
$38.50
Our Price: $28.58
(10) In Stock
This Part Fits:
Catalog: A
Vehicle
1979 Mercedes 300SD
APA/URO Parts Expansion Tank - for 1982 Mercedes 300SD - W0133-1623455 Click to Enlarge
5 Stars
APA/URO Parts W0133-1623455
Expansion Tank
Loading Reviews...
Part Number: W0133-1623455
Brand: APA/URO Parts
Detailed Notes: Early models may require (1) 126 500 00 84 Plug Kit to accommodate opening for Coolant Level Sensor.
Condition: New
Shipping Options: Ground, Overnight, 2 Day
List Price:
$38.50
Our Price: $28.58
(10) In Stock
This Part Fits:
Catalog: A
Vehicle
1982 Mercedes 300SD
APA/URO Parts Expansion Tank - for 1985 Mercedes 300SD - W0133-1623455 Click to Enlarge
5 Stars
APA/URO Parts W0133-1623455
Expansion Tank
Loading Reviews...
Part Number: W0133-1623455
Brand: APA/URO Parts
Detailed Notes: Early models may require (1) 126 500 00 84 Plug Kit to accommodate opening for Coolant Level Sensor.
Condition: New
Shipping Options: Ground, Overnight, 2 Day
List Price:
$38.50
Our Price: $28.58
(10) In Stock
This Part Fits:
Catalog: A
Vehicle
1985 Mercedes 300SD
Febi Expansion Tank - for 1984 Mercedes 300SD - 126 500 15 49 Click to Enlarge
Website Reviews
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Part Number: 126 500 15 49
Brand: Febi
Notes: Coolant Expansion Tank -- Also use- (Qty.) (1) 126 500 00 84 Expansion Tank Plug Kit.
Condition: New
Shipping Options: Ground
$35.73
(23) In Stock
This Part Fits:
Catalog: G
Vehicle
1984 Mercedes 300SD
TRQ Expansion Tank - for 1985 Mercedes 300SD - ECA92509 Click to Enlarge
Website Reviews
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Part Number: ECA92509
Brand: TRQ
Notes: Engine Coolant Reservoir -- W116 Body Type; with Low Fluid Sensor
Condition: New
Shipping Options: Free Ground Shipping
$48.95
with FREE Shipping
(7) In Stock
This Part Fits:
Catalog: Q
Vehicle
1985 Mercedes 300SD
Genuine Expansion Tank - for 1982 Mercedes 300SD - 1265001549 Click to Enlarge
Website Reviews
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Part Number: 1265001549
Brand: Genuine
Notes: Engine Coolant Reservoir -- Without CAP
Condition: New
Shipping Options: Ground
$41.43
(12) In Stock
This Part Fits:
Catalog: B
Vehicle
1982 Mercedes 300SD
Genuine Expansion Tank - for 1985 Mercedes 300SD - 1265001549 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 1265001549
Brand: Genuine
Notes: Engine Coolant Reservoir -- Without CAP
Condition: New
Shipping Options: Ground
$41.43
(12) In Stock
This Part Fits:
Catalog: B
Vehicle
1985 Mercedes 300SD
SKP Expansion Tank - for 1978 Mercedes 300SD - 1265001549 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 1265001549
Brand: SKP
Notes: Engine Coolant Reservoir -- With Level Sensor Port; Level Sensor and Cap not included
  • OE Style for easy replacement and fitment
Condition: New
Shipping Options: Free Ground Shipping
$37.98
with FREE Shipping
View Details
This Part Fits:
Catalog: S
Vehicle
1978 Mercedes 300SD
APA/URO Parts Expansion Tank - for 1980 Mercedes 300SD - W0133-1623455 Click to Enlarge
5 Stars
APA/URO Parts W0133-1623455
Expansion Tank
Loading Reviews...
Part Number: W0133-1623455
Brand: APA/URO Parts
Detailed Notes: Early models may require (1) 126 500 00 84 Plug Kit to accommodate opening for Coolant Level Sensor.
Condition: New
Shipping Options: Ground, Overnight, 2 Day
List Price:
$38.50
Our Price: $28.58
(10) In Stock
This Part Fits:
Catalog: A
Vehicle
1980 Mercedes 300SD
APA/URO Parts Expansion Tank - for 1981 Mercedes 300SD - W0133-1623455 Click to Enlarge
5 Stars
APA/URO Parts W0133-1623455
Expansion Tank
Loading Reviews...
Part Number: W0133-1623455
Brand: APA/URO Parts
Detailed Notes: Early models may require (1) 126 500 00 84 Plug Kit to accommodate opening for Coolant Level Sensor.
Condition: New
Shipping Options: Ground, Overnight, 2 Day
List Price:
$38.50
Our Price: $28.58
(10) In Stock
This Part Fits:
Catalog: A
Vehicle
1981 Mercedes 300SD
SKP Expansion Tank - for 1984 Mercedes 300SD - 1265001549 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 1265001549
Brand: SKP
Notes: Engine Coolant Reservoir -- With Level Sensor Port; Level Sensor and Cap not included
  • OE Style for easy replacement and fitment
Condition: New
Shipping Options: Free Ground Shipping
$37.98
with FREE Shipping
View Details
This Part Fits:
Catalog: S
Vehicle
1984 Mercedes 300SD
SKP Expansion Tank - for 1983 Mercedes 300SD - 1265001549 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 1265001549
Brand: SKP
Notes: Engine Coolant Reservoir -- With Level Sensor Port; Level Sensor and Cap not included
  • OE Style for easy replacement and fitment
Condition: New
Shipping Options: Free Ground Shipping
$37.98
with FREE Shipping
View Details
This Part Fits:
Catalog: S
Vehicle
1983 Mercedes 300SD
SKP Expansion Tank - for 1985 Mercedes 300SD - SK123059 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: SK123059
Brand: SKP
Notes: Engine Coolant Reservoir -- With Level Sensor Port; Level Sensor and Cap not included
  • OE Style for easy replacement and fitment
Condition: New
Shipping Options: Ground
$23.72
(3) In Stock
This Part Fits:
Catalog: T
Vehicle
1985 Mercedes 300SD

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Mercedes 300SD Expansion Tank Reviews
5 of 5
Verified Customer
10/2/13 09:12 AM - USA

High quality,was exact match of original equipment. - wolfcreek automotive

- 1992 Mercedes 300SD Expansion Tank