Genuine Mazda Coolant Reservoir Cap

Coolant Overflow Reservoir Cap

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72 Coolant Reservoir Caps found

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Mazda Cap Part Number: KL01-15-205
$17.48 MSRP: $23.31
You Save: $5.83 (26%)
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Product Specifications
- Other Name: Cap, Radiator Sub Tank; Radiator Cap, Reservoir Cap
Fits the following Mazda Models:
- 626 | 1998-2002 | DX, ES, LX | 4 Cyl 2.0 L GAS, 6 Cyl 2.5 L GAS
- Miata | 1999-2003 | 10th Anniversary, Base, LS, SE, Shinsen | 4 Cyl 1.8 L GAS
- Millenia | 1995-2002 | Base, L, Millennium Edition, S | 6 Cyl 2.3 L GAS, 6 Cyl 2.5 L GAS
- MPV | 2000-2006 | DX, ES, LX, LX-SV | 6 Cyl 2.5 L GAS, 6 Cyl 3.0 L GAS
- Protege | 1999-2003 | DX, ES, LX, MP3, Mazdaspeed | 4 Cyl 1.6 L GAS, 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS
- Protege5 | 2002-2003 | Base | 4 Cyl 2.0 L GAS
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Mazda Radiator Cap Part Number: PE01-15-205
$25.91 MSRP: $34.56
You Save: $8.65 (26%)
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Product Specifications
- Other Name: Cap, Radiator
Fits the following Mazda Models:
- 6 | 2014-2017 | Grand Touring, Sport, Touring | 4 Cyl 2.5 L GAS
- CX-3 | 2016-2021 | Grand Touring, Sport, Touring | 4 Cyl 2.0 L GAS
- CX-5 | 2013-2025 | 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
- CX-9 | 2016-2023 | Carbon Edition, Grand Touring, Signature, Sport, Touring, Touring Plus | 4 Cyl 2.5 L GAS
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Mazda Cap Part Number: PE01-15-355B
$4.24 MSRP: $5.65
You Save: $1.41 (25%)
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Product Specifications
- Other Name: Cap, Sub Tank; Reservoir Cap
- Replaces: PE01-15-355A, PE01-15-355
Fits the following Mazda Models:
- 3 | 2014-2018 | Grand Touring, I Sport, I Touring, Sport, Touring, i Grand Touring, i SV, s Grand Touring, s 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 | 2013-2025 | 2.5 S, 2.5 S Carbon Edition, Carbon Edition, Grand Select, Grand Touring, Signature, Sport, Touring | 4 Cyl 2.0 L GAS, 4 Cyl 2.2 L DIESEL, 4 Cyl 2.5 L GAS
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Mazda Cap Part Number: AJA4-15-205
$20.81 MSRP: $27.76
You Save: $6.95 (26%)
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Product Specifications
- Other Name: Cap, Radiator; Reservoir Cap
Fits the following Mazda Models:
- CX-9 | 2007-2015 | Grand Touring, Sport, Touring | 6 Cyl 3.5 L GAS, 6 Cyl 3.7 L GAS
- MX-5 Miata | 2006-2015 | 25th Anniversary Edition, Base, Club, Club Spec, Grand Touring, SV, Special Edition, Sport, Touring | 4 Cyl 2.0 L GAS
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Mazda Radiator Cap Part Number: PE20-15-205
$19.39 MSRP: $25.85
You Save: $6.46 (25%)
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Product Specifications
- Other Name: Cap, Radiator
Fits the following Mazda Models:
- 3 | 2014-2018 | Grand Touring, I Sport, I Touring, Sport, Touring, i Grand Touring, i SV, s Grand Touring, s Touring | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS
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Mazda Cap Part Number: L327-15-355
$3.65 MSRP: $4.87
You Save: $1.22 (26%)
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Product Specifications
- Other Name: Cap, Sub Tank; Reservoir Cap
- Replaces: L5A3-15-355
Fits the following Mazda Models:
- 6 | 2011-2013 | i | 4 Cyl 2.5 L GAS
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Mazda Cap Part Number: LFB7-15-355A
$6.89 MSRP: $9.18
You Save: $2.29 (25%)
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Product Specifications
- Other Name: Cap, Sub Tank; Reservoir Assembly Cap, Reservoir Cap
- Replaces: LFB7-15-355
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 Cap Part Number: PY8W-15-355
$7.71 MSRP: $10.28
You Save: $2.57 (25%)
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Product Specifications
- Other Name: Cap, Sub Tank; Reservoir Cap
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 Radiator Cap Part Number: LFH1-15-205
$23.69 MSRP: $31.58
You Save: $7.89 (25%)
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Product Specifications
- Other Name: Cap, Radiator
Fits the following Mazda Models:
- CX-7 | 2007-2012 | Grand Touring, Sport, Touring | 4 Cyl 2.3 L GAS
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Mazda Cap Part Number: LF50-15-205A
$35.63 MSRP: $47.50
You Save: $11.87 (25%)
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Product Specifications
- Other Name: Cap, Radiator; Reservoir Cap
Fits the following Mazda Models:
- 3 | 2004-2013 | Mazdaspeed, S, SP23, i | 4 Cyl 2.0 L GAS, 4 Cyl 2.3 L GAS, 4 Cyl 2.5 L GAS
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Mazda Cap Part Number: ZJ38-15-355A
$4.10 MSRP: $5.47
You Save: $1.37 (26%)
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Product Specifications
- Other Name: Cap, Sub Tank; Reservoir Cap
Fits the following Mazda Models:
- 2 | 2011-2014 | Sport, Touring | 4 Cyl 1.5 L GAS
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Mazda Radiator Cap Part Number: L3R1-15-205
$4.74 MSRP: $6.32
You Save: $1.58 (25%)
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Product Specifications
- Other Name: Cap, Radiator
Fits the following Mazda Models:
- 6 | 2007-2008 | i | 4 Cyl 2.3 L GAS
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Mazda Cap Part Number: PYG6-15-355
$5.21 MSRP: $6.96
You Save: $1.75 (26%)
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Product Specifications
- Other Name: Cap, Sub Tank; Reservoir Cap
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 Radiator Cap Part Number: L321-15-205
$7.81 MSRP: $10.42
You Save: $2.61 (26%)
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Product Specifications
- Other Name: Cap, Radiator
Fits the following Mazda Models:
- 6 | 2003-2008 | Mazdaspeed, S, i | 4 Cyl 2.3 L GAS, 6 Cyl 3.0 L GAS
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Mazda Reservoir Cap Part Number: PX8F-15-355
$8.71 MSRP: $11.62
You Save: $2.91 (26%)
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Product Specifications
- Other Name: Cap, Sub Tank; Cap
Fits the following Mazda Models:
- CX-50 | 2023-2025 | 2.5 Turbo | 4 Cyl 2.5 L GAS
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Mazda Reservoir Cap Part Number: L321-15-355
$8.95 MSRP: $11.94
You Save: $2.99 (26%)
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Product Specifications
- Other Name: Cap, Sub Tank
Fits the following Mazda Models:
- 6 | 2003-2008 | Mazdaspeed, S, i | 4 Cyl 2.3 L GAS, 6 Cyl 3.0 L GAS
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Mazda Cap Part Number: PX35-15-355
$10.65 MSRP: $14.20
You Save: $3.55 (25%)
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Product Specifications
- Other Name: Cap, Sub Tank; Reservoir Cap
Fits the following Mazda Models:
- CX-5 | 2019-2025 | 2.5 Carbon Turbo, 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 Cap Part Number: AJ57-15-205
$13.25 MSRP: $17.67
You Save: $4.42 (26%)
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Product Specifications
- Other Name: Cap, Radiator; Reservoir Cap
Fits the following Mazda Models:
- 6 | 2003-2013 | Mazdaspeed, S, i | 4 Cyl 2.3 L GAS, 4 Cyl 2.5 L GAS, 6 Cyl 3.0 L GAS, 6 Cyl 3.7 L GAS
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Mazda Radiator Cap Part Number: YF47-15-205
$17.36 MSRP: $23.16
You Save: $5.80 (26%)
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Product Specifications
- Other Name: Cap, Radiator; Reservoir Cap
Fits the following Mazda Models:
- Miata | 2004-2005 | Base, LS, Mazdaspeed | 4 Cyl 1.8 L GAS
- MPV | 2006 | ES, LX, LX-SV | 6 Cyl 3.0 L GAS
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Mazda Radiator Cap Part Number: WL21-15-205
$19.23 MSRP: $25.63
You Save: $6.40 (25%)
Product Specifications
- Other Name: Cap, Radiator
Fits the following Mazda Models:
- Protege | 1999-2003 | DX, ES, LX, MP3, Mazdaspeed | 4 Cyl 1.6 L GAS, 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS
- Protege5 | 2002-2003 | Base | 4 Cyl 2.0 L GAS

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Mazda Coolant Reservoir Cap

A Mazda Coolant Reservoir Cap is designed to be applied for ensuring a steady pressure in the cooling loop. It seals the expansion tank, keeping air out and liquid in, thus preventing the engine from temperature spikes and annoying leaks while guarding the environment. Mazda vehicles offer spirited handling with practical efficiency. This philosophy started way back in 1931 and became even stronger with rotary power and later SKYACTIV technology that cuts fuel use while not killing the fun. The KODO soul of motion design philosophy imbues each Mazda with a low and sleek stance that exudes an effect of being in motion even when stationary. Various i-ACTIVSENSE safety technologies such as radar cruise, lane keeping, and other systems automatically monitor the road ahead and provide assistance to allow a natural driving experience with complete confidence. Mazda also tests mild hybrid and electric drive options and i-ACTIV all-wheel drive on rough terrain to prove durability so drivers get versatility along with flair. Among this collection, the Coolant Reservoir Cap is a small but mighty player. Made of metal or plastic that can withstand heat, the Coolant Reservoir Cap maintains system pressure, prevents contamination, and stops hazardous antifreeze from hitting the ground, all of which reduces rust, corrosion, and other costly repairs. This Mazda product provides a snug fit that allows the coolant to circulate continuously while maintaining consistent volume. As a result, each engine operates at its optimum temperature, whether on long commutes or spirited weekend drives.

You'll get great performance and real durability when you pick genuine OEM Coolant Reservoir Cap. Mazda builds these using high-quality materials and official factory methods to ensure they hold up mile after mile. You deserve that Mazda reliability without the headache of cheap knockoffs. It is easy to find exactly what you need in our huge inventory of genuine parts. Plus, every OEM part carries a real manufacturer's warranty for your peace of mind. You will love our low prices too. Order today and we will ship your brand-new parts fast. They often reach your door in just a few days.