How to drain and clean the coolant reservoir on Mazda 3?

Empty the cooling system until the reservoir is emptied. When provided with the original hose clamps, have them remove the clamps of the smaller hoses with the pliers and also disconnect the hoses to the reservoir. Take off the screw attaching the reservoir to the inner fender panel. Pick up the tank and detach it at the front mounting tab and unhook the hose on the bottom of the tank. Use soapy water and brush to clean out the tank and make sure that inside the tank no deposits have been left, also check the reservoir well and in case there is a crack then change the reservoir. Removal is the other side of installation after which the cooling system is filled.

How to remove and install a Coolant Reservoir and Radiator on Mazda Protege?

The steps involved to replace the radiator are to first of all disconnect the negative battery cable and empty the engine coolant into a container. In models made 1990 to 1994, delete resonance chamber, then disconnect wiring connector at fan motor and, with two speed fans, disconnect wiring connector at fan thermoswitch. Disconnect the coolant reservoir hose of the radiator filler neck and remove the coolant reservoir. Relax the radiator hose clamps and remove the upper and lower radiator hose. Should the car be an automatic transaxle, remove the oil cooler hose off the radiator, then place a drip pan to hold on to any transmission oil leakages. Take out the fan retaining bolts and get out the fan assembly; in models since 1995, place the fan assembly aside, and remove the radiator. With caution, remove and pull off the radiator taking care not to forget the low mounts which should be reinstalled. In the case of models made in 1995 and up, the cooling fan can be taken off together with fan shroud when required. Check the radiator that has been removed to check the leaks, damages, and internal blockage and in case of any repairs, seek the services of professionals. Blow compressed air through the radiator using a soft brush and ensure that the cooling fins are not bent. The reversal is the process of installation, and the radiator is to be installed in the right order having taken it down, and making sure that the mounting bolts are firmly tightened. Once installed, fill in the cooling system with appropriate antifreeze and water mixture, start the engine to test leaks and take time to get the radiator to normal operating temperature, checking the radiator hoses. Lastly, with models having automatic transaxle, check and add automatic transmission fluid where necessary. In the case of the coolant reservoir, unbolt and remove it out of the engine compartment pouring the coolant to a container and inspecting the reservoir on cracks or chafing and replacing it in case of damage. Re-installation is in reverse sequence.

Genuine Mazda Coolant Reservoir

Coolant Tank Reservoir

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68 Coolant Reservoirs found

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Mazda Expansion Tank Part Number: PAF3-15-351
$7.59 MSRP: $10.12
You Save: $2.53 (25%)
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Product Specifications
- Other Name: Tank, Sub-Radiator; Expansion Tank, Reservoir Tank
- Replaces: PAF1-15-351
Fits the following Mazda Models:
- 3 | 2019-2024 | 2.0, 2.5 S, 2.5 Turbo, 2.5 Turbo Premium Plus, Base, Carbon Edition, Preferred, Premium, Select, Select Sport | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS
- CX-30 | 2020-2023 | 2.5 S, 2.5 S Carbon Edition, Base, Preferred, Premium, Select | 4 Cyl 2.5 L GAS
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Mazda Reservoir Part Number: P31H-15-351A
$22.29 MSRP: $29.73
You Save: $7.44 (26%)
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Product Specifications
- Other Name: Tank, Sub-Radiator; Expansion Tank
Fits the following Mazda Models:
- CX-3 | 2016-2020 | Grand Touring, Sport, Touring | 4 Cyl 2.0 L GAS
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Mazda Reservoir Part Number: PYG6-15-351
$28.49 MSRP: $37.99
You Save: $9.50 (26%)
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Product Specifications
- Other Name: Tank, Sub-Radiator; Expansion Tank, Reservoir
Fits the following Mazda Models:
- 6 | 2018-2021 | Carbon Edition, Grand Touring, Grand Touring Reserve, Signature | 4 Cyl 2.5 L GAS
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Mazda Expansion Tank Part Number: P51B-15-351
$30.04 MSRP: $40.07
You Save: $10.03 (26%)
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Product Specifications
- Other Name: Tank, Sub-Radiator; Expansion Tank
Fits the following Mazda Models:
- MX-5 Miata | 2016-2023 | 100th Anniversary Special Edition, Club, Grand Touring, RF 100th Anniversary Special Edition, RF Club, RF Grand Touring, RF GT, Sport | 4 Cyl 2.0 L GAS
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Mazda Reservoir Part Number: PE01-15-351A
$30.04 MSRP: $40.07
You Save: $10.03 (26%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Tank, Sub-Radiator; Reservoir, Reservoir Tank
Fits the following Mazda Models:
- 3 | 2014-2018 | Grand Touring, i Grand Touring, I Sport, i SV, I Touring, s Grand Touring, s Touring, Sport, Touring | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS
- 6 | 2014-2021 | Grand Touring, Sport, Touring | 4 Cyl 2.5 L GAS
- CX-5 | 2013-2024 | 2.5 S, 2.5 S Carbon Edition, Carbon Edition, Grand Select, Grand Touring, Sport, Touring | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS
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Mazda Reservoir Part Number: L518-15-350A
$31.49 MSRP: $41.99
You Save: $10.50 (26%)
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Product Specifications
- Other Name: Tank, Sub-Radiator; Reservoir
Fits the following Mazda Models:
- 6 | 2009-2013 | i, S | 4 Cyl 2.5 L GAS, 6 Cyl 3.7 L GAS
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Mazda Reservoir Part Number: P579-15-351
$31.49 MSRP: $41.99
You Save: $10.50 (26%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Tank, Sub; Reservoir
Fits the following Mazda Models:
- CX-3 | 2020-2021 | Sport | 4 Cyl 2.0 L GAS
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Mazda Reservoir Part Number: PX8E-15-351
$31.93 MSRP: $42.57
You Save: $10.64 (25%)
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Product Specifications
- Other Name: Tank, Sub-Radiator; Reservoir
Fits the following Mazda Models:
- CX-50 | 2023-2024 | 2.5 S, 2.5 Turbo | 4 Cyl 2.5 L GAS
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Mazda Reservoir Part Number: PY8W-15-351
$42.04 MSRP: $56.06
You Save: $14.02 (26%)
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Product Specifications
- Other Name: Tank, Sub-Radiator; Reservoir
Fits the following Mazda Models:
- CX-9 | 2016-2023 | Carbon Edition, Grand Touring, Signature, Sport, Touring, Touring Plus | 4 Cyl 2.5 L GAS
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Mazda Expansion Tank Part Number: LFB7-15-350C
$44.49 MSRP: $59.33
You Save: $14.84 (26%)
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Product Specifications
- Other Name: Tank, Sub-Radiator; Reservoir Assembly
- Replaces: LFB7-15-350B, LFB7-15-350A
Fits the following Mazda Models:
- 5 | 2012-2015, 2006-2010 | Grand Touring, Sport, Touring | 4 Cyl 2.3 L GAS, 4 Cyl 2.5 L GAS
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Mazda Reservoir Tank Part Number: 1F20-15-350A
$45.24 MSRP: $60.33
You Save: $15.09 (26%)
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Product Specifications
- Other Name: Tank, Sub
- Replaces: 1F20-15-350
Fits the following Mazda Models:
- B2300 | 2001-2009 | Base, SE, SX | 4 Cyl 2.3 L GAS
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Mazda Reservoir Part Number: L3H5-15-350
$43.64 MSRP: $58.19
You Save: $14.55 (25%)
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Product Specifications
- Other Name: Tank, Sub-Radiator
Fits the following Mazda Models:
- Tribute | 2005-2006 | i | 4 Cyl 2.3 L GAS
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Mazda Expansion Tank Part Number: PEAR-15-351
$50.08 MSRP: $66.78
You Save: $16.70 (26%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Tank, Sub-Radiator; Expansion Tank
Fits the following Mazda Models:
- 3 | 2014-2018 | Grand Touring, i Grand Touring, I Sport, i SV, I Touring, s Grand Touring, s Touring, Sport, Touring | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS
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Mazda Reservoir Part Number: PX8F-15-730
$50.79 MSRP: $67.73
You Save: $16.94 (26%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sub Tank; Reservoir
Fits the following Mazda Models:
- CX-50 | 2023-2024 | 2.5 Turbo | 4 Cyl 2.5 L GAS
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Mazda Reservoir Part Number: PA6T-15-360A
$52.70 MSRP: $70.28
You Save: $17.58 (26%)
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Product Specifications
- Other Name: Tank, Sub-Radiator; Reservoir
- Replaces: PA6T-15-360
Fits the following Mazda Models:
- CX-30 | 2020-2023 | 2.5 S, 2.5 S Carbon Edition, Base, Preferred, Premium, Select | 4 Cyl 2.5 L GAS
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Mazda Reservoir Assembly Part Number: PAF3-15-360A
$52.84 MSRP: $70.46
You Save: $17.62 (26%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Tank, Sub-Radiator; Reservoir Assembly
- Replaces: PAF3-15-360
Fits the following Mazda Models:
- 3 | 2019-2024 | 2.0, 2.5 S, Base, Carbon Edition, Preferred, Premium, Select, Select Sport | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS
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Mazda Reservoir Part Number: PX35-15-351
$54.21 MSRP: $72.30
You Save: $18.09 (26%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Tank, Sub-Radiator; Expansion Tank, Reservoir
Fits the following Mazda Models:
- CX-5 | 2019-2024 | 2.5 Turbo, 2.5 Turbo Signature, Carbon Edition Turbo, Grand Touring Reserve, Signature | 4 Cyl 2.5 L GAS
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Mazda Reservoir Part Number: MH01-15-730A
$51.81 MSRP: $69.10
You Save: $17.29 (26%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sub Tank; Expansion Tank, Reservoir
Fits the following Mazda Models:
- MX-30 EV | 2022-2023 | Base, Premium Plus | BATTERY EV (EV/BEV)
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Mazda Reservoir Assembly Part Number: PX8F-15-360
$57.19 MSRP: $76.26
You Save: $19.07 (26%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Tank, Sub-Radiator; Reservoir Assembly
Fits the following Mazda Models:
- CX-50 | 2023-2024 | 2.5 Turbo | 4 Cyl 2.5 L GAS
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Mazda Reservoir Part Number: LF8B-15-350B
$59.00 MSRP: $78.68
You Save: $19.68 (26%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Tank, Sub-Radiator; Expansion Tank, Reservoir
- Replaces: LF8B-15-360A, LF50-15-350A, LF50-15-350, LF8B-15-350A, LF50-15-350B, LF8B-15-350, LF8B-15-360, LF50-15-350C, LFR5-15-360
Fits the following Mazda Models:
- 3 | 2004-2013 | i, Mazdaspeed, S, SP23 | 4 Cyl 2.0 L GAS, 4 Cyl 2.3 L GAS

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1-20 of 68 Results

Mazda Coolant Reservoir

Every part of the car is important. Your vehicle's performance will be compromised if something goes wrong with the Mazda Coolant Reservoir. Therefore, for your smooth driving and safety, you need regular checks and timely replacements. Whenever you need replacements, opt for genuine Mazda Coolant Reservoirs. Because they meet the manufacturer's criteria, it guarantees that replacements fit perfectly. Thus, these make better choices for people who care about driving. Why should you shop at MazdaPartsNow.com? We sell genuine Mazda Coolant Reservoirs. In our online catalog, there is a wide range of different parts. These are delivered directly from authorized Mazda dealers only so that customers can be sure of their security throughout any transaction while using our website. Furthermore, you can also quickly search for OEM parts you want because of our user-friendly site navigation. Choose us for a genuine Mazda Coolant Reservoir that keeps your car running like new.

Mazda Coolant Reservoir Parts and Q&A

Reservoir
L33X-15-350E
Q: How to drain and clean the coolant reservoir on Mazda 3?
A:
Empty the cooling system until the reservoir is emptied. When provided with the original hose clamps, have them remove the clamps of the smaller hoses with the pliers and also disconnect the hoses to the reservoir. Take off the screw attaching the reservoir to the inner fender panel. Pick up the tank and detach it at the front mounting tab and unhook the hose on the bottom of the tank. Use soapy water and brush to clean out the tank and make sure that inside the tank no deposits have been left, also check the reservoir well and in case there is a crack then change the reservoir. Removal is the other side of installation after which the cooling system is filled.
Reservoir
B6BF-15-350B
Q: How to remove and install a Coolant Reservoir and Radiator on Mazda Protege?
A:
The steps involved to replace the radiator are to first of all disconnect the negative battery cable and empty the engine coolant into a container. In models made 1990 to 1994, delete resonance chamber, then disconnect wiring connector at fan motor and, with two speed fans, disconnect wiring connector at fan thermoswitch. Disconnect the coolant reservoir hose of the radiator filler neck and remove the coolant reservoir. Relax the radiator hose clamps and remove the upper and lower radiator hose. Should the car be an automatic transaxle, remove the oil cooler hose off the radiator, then place a drip pan to hold on to any transmission oil leakages. Take out the fan retaining bolts and get out the fan assembly; in models since 1995, place the fan assembly aside, and remove the radiator. With caution, remove and pull off the radiator taking care not to forget the low mounts which should be reinstalled. In the case of models made in 1995 and up, the cooling fan can be taken off together with fan shroud when required. Check the radiator that has been removed to check the leaks, damages, and internal blockage and in case of any repairs, seek the services of professionals. Blow compressed air through the radiator using a soft brush and ensure that the cooling fins are not bent. The reversal is the process of installation, and the radiator is to be installed in the right order having taken it down, and making sure that the mounting bolts are firmly tightened. Once installed, fill in the cooling system with appropriate antifreeze and water mixture, start the engine to test leaks and take time to get the radiator to normal operating temperature, checking the radiator hoses. Lastly, with models having automatic transaxle, check and add automatic transmission fluid where necessary. In the case of the coolant reservoir, unbolt and remove it out of the engine compartment pouring the coolant to a container and inspecting the reservoir on cracks or chafing and replacing it in case of damage. Re-installation is in reverse sequence.