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Coolant Reservoir Caps

Is your coolant reservoir cap missing or damaged? Get a durable replacement here at CarParts.com! We carry a wide selection of coolant reservoir caps designed for a wide variety of makes and models. Enjoy competitive pricing on aftermarket parts manufactured by the top brands today. Place your order in just a few clicks, and we’ll ship the parts you need right to your doorstep. Shop now and get the best deal on a coolant reservoir cap today!
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V10-0012 OE Replacement Series Coolant Reservoir Cap - Direct Fit, Sold individually
Part Number: VCOV100012
Vehicle Info Required to Guarantee Fit
$3.49
Product Details
Warranty : 24-month or 24,000-mile limited warrantyQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Promotions : European Vehicle PartsSeries : OE Replacement SeriesInterchange Part Number : 191809101A, 191809101F, 1GM809101A, 1H0121321A, 1H0121321B, 1H0121321C, 357121321, 357121321A, 357121321CReplaces OE Number : 191809101A, 191809101F, 1GM809101A, 1H0121321A, 1H0121321B, 1H0121321C, 357121321, 357121321A, 357121321CRecommended Use : OE ReplacementProduct Fit : Direct Fit
55056382AA Coolant Reservoir Cap - Direct Fit
Part Number: CR55056382AA
Vehicle Info Required to Guarantee Fit
$13.49
Product Details
Notes : Use existing hardwareWarranty : 1 year or 12,000-mile Crown limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Promotions : European Vehicle PartsReplaces OE Number : 5174456, 55056382Product Fit : Direct Fit
4682828 Coolant Reservoir Cap - Direct Fit
Part Number: 4682828
Vehicle Info Required to Guarantee Fit
$4.49
Product Details
Notes : Use existing hardwareWarranty : 1 year or 12,000-mile Crown limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Promotions : European Vehicle PartsReplaces OE Number : 4401493Recommended Use : OE ReplacementProduct Fit : Direct Fit
54231 Help Series Coolant Reservoir Cap - Direct Fit, Sold individually
Part Number: RB54231
Vehicle Info Required to Guarantee Fit
$30.49
Product Details
Notes : 2.6 in. L x 2.6 in. W x 66 mm diameter; Twist Type; Vented; Screw On Attachment; Plastic (Nylon) Material; Non-pressurized;Warranty : Lifetime Dorman limited warrantyQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Promotions : European Vehicle PartsSeries : Help SeriesInterchange Part Number : 1640546080Replaces OE Number : 1640546080Recommended Use : OE ReplacementProduct Fit : Direct Fit
924-1059 HD Solutions Series Coolant Reservoir Cap - Sold individually
Part Number: RB9241059
Vehicle Info Required to Guarantee Fit
$16.49
Product Details
Warranty : 3-year or unlimited-mile Dorman limited warrantyQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Promotions : European Vehicle PartsSeries : HD Solutions SeriesInterchange Part Number : 97223011, 8972230111, 8972230112, 572.2053Replaces OE Number : 97223011, 8972230111, 8972230112, 572.2053
Genuine Audi, Volkswagen Expansion Tank Cap - Replaces OE Number 1C9-121-321
Part Number: GXL1C9121321
Vehicle Info Required to Guarantee Fit
$39.49
Product Details
Warranty : 24-month or 24,000-mile limited warrantyQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Series : Genuine Audi, VolkswagenRecommended Use : OE ReplacementProduct Fit : Direct Fit
Expansion Tank Cap - Replaces OE Number MJA4440BA
Part Number: T4ZMJA4440BA
Vehicle Info Required to Guarantee Fit
$9.49
Product Details
Warranty : 24-month or 24,000-mile limited warrantyQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Interchange Part Number : MJA4440BAReplaces OE Number : MJA4440BARecommended Use : OE ReplacementProduct Fit : Direct Fit
Genuine Mini Expansion Tank Cap - Replaces OE Number 17-10-7-515-499
Part Number: GXL17107515499
Vehicle Info Required to Guarantee Fit
$28.49
Product Details
Warranty : 24-month limited warrantyQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Series : Genuine MiniRecommended Use : OE ReplacementProduct Fit : Direct Fit
Genuine Porsche Expansion Tank Cap - Replaces OE Number 955-106-447-20
Part Number: GXL95510644720
Vehicle Info Required to Guarantee Fit
$38.49
Product Details
Warranty : 24-month or 24,000-mile limited warrantyQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Series : Genuine PorscheRecommended Use : OE ReplacementProduct Fit : Direct Fit
T50 Coolant Reservoir Cap - Direct Fit, Sold individually
Part Number: MRDT50
Vehicle Info Required to Guarantee Fit
$11.49
Product Details
Notes : 21 PSI; 1.33 in. Width; 0.83 in. Valve OD; Cam-On Attachment TypeWarranty : 12-month Motorad limited warrantyQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Promotions : European Vehicle PartsMaterial : Stainless steel and rubberRecommended Use : OE ReplacementProduct Fit : Direct FitColor Finish : Silver
RC74 GM Original Equipment Series Coolant Reservoir Cap - Direct Fit, Sold individually
Part Number: ACRC74
Vehicle Info Required to Guarantee Fit
$7.49
Product Details
Notes : 15 P.S.I. radiator surge tank cap; With brass ring on fill neckWarranty : 24-months or unlimited mile AC Delco limited warrantyQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Series : GM Original Equipment SeriesReplaces OE Number : 10244485Recommended Use : OE ReplacementProduct Fit : Direct Fit
2Q0-121-321 A Genuine Volkswagen Coolant Reservoir Cap - Sold individually
Part Number: GXL2Q0121321A
Vehicle Info Required to Guarantee Fit
$37.99
Vehicle Fitment
  • 2019 - 2020 Volkswagen Jetta SEL 4 Cyl 1.4L
  • 2015 - 2019 Volkswagen Golf Sportwagen All Submodels All Engines
  • 2019 - 2020 Volkswagen GTI All Submodels All Engines
  • 2020 Volkswagen Atlas Cross Sport Comfortline 4 Cyl 2.0L
  • 2019 - 2020 Volkswagen Jetta R-Line 4 Cyl 1.4L
  • 2018 - 2019 Volkswagen Atlas Trendline 4 Cyl 2.0L
  • 2019 - 2020 Volkswagen Passat All Submodels All Engines
  • 2020 Volkswagen Atlas SEL Premium 4 Cyl 2.0L
  • 2018 - 2018 Volkswagen Atlas SEL 4 Cyl 2.0L
  • 2020 Volkswagen Atlas SEL 4 Cyl 2.0L
  • 2019 - 2020 Volkswagen Jetta Comfortline 4 Cyl 1.4L
  • 2018 - 2020 Volkswagen Atlas SE 4 Cyl 2.0L
  • 2015 - 2020 Volkswagen Golf All Submodels All Engines
  • 2018 - 2019 Volkswagen Atlas Comfortline 4 Cyl 2.0L
  • 2018 - 2020 Volkswagen Atlas S 4 Cyl 2.0L
  • 2019 - 2020 Volkswagen Jetta SE 4 Cyl 1.4L
  • 2019 - 2020 Volkswagen Jetta Execline 4 Cyl 1.4L
  • 2018 - 2020 Volkswagen Tiguan All Submodels All Engines
  • 2019 - 2020 Volkswagen Jetta S 4 Cyl 1.4L
  • 2017 - 2019 Volkswagen Golf Alltrack All Submodels All Engines
  • 2020 Volkswagen Atlas Cross Sport SE 4 Cyl 2.0L
  • 2019 - 2020 Volkswagen Jetta Highline 4 Cyl 1.4L
  • 2019 - 2020 Volkswagen Arteon All Submodels All Engines
  • 2019 - 2020 Volkswagen Jetta SEL Premium 4 Cyl 1.4L
  • 2020 Volkswagen Atlas Cross Sport S 4 Cyl 2.0L
  • 2020 Volkswagen Atlas Cross Sport SEL 4 Cyl 2.0L
Product Details
Warranty : 24-month limited warrantyQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Series : Genuine Volkswagen
36737 Expansion Tank Cap - Replaces OE Number 17-11-7-639-020
Part Number: FBI36737
Vehicle Info Required to Guarantee Fit
$12.99
Product Details
Warranty : 24-month or 24,000-mile limited warrantyQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Replaces OE Number : 17-11-7-639-020Recommended Use : OE ReplacementProduct Fit : Direct Fit
NTC7161G Expansion Tank Cap - Replaces OE Number NTC7161
Part Number: T4ZNTC7161G
Vehicle Info Required to Guarantee Fit
$6.99
Product Details
Warranty : 24-month or 24,000-mile limited warrantyQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Interchange Part Number : NTC7161Replaces OE Number : NTC7161Recommended Use : OE ReplacementProduct Fit : Direct Fit
40722 Expansion Tank Cap - Replaces OE Numbers
Part Number: FBI40722
Vehicle Info Required to Guarantee Fit
$5.49
Product Details
Warranty : 24-month or 24,000-mile limited warrantyQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Replaces OE Number : 3B0-121-321, 958-106-447-00Recommended Use : OE ReplacementProduct Fit : Direct Fit
Page 1 of 17 | Showing 1 - 15 of 241 results

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Shopping for Coolant Reservoir Cap

Coolant Reservoir Cap Shopping Info

What Is a Coolant Reservoir Cap?

The engine coolant reservoir cap seals the coolant reservoir tank and prevents coolant contamination. It’s usually made of metal or plastic.

How Much Does a Coolant Reservoir Cap Replacement Cost?

A coolant reservoir replacement costs around $50 and $250. Coolant reservoir cap prices may vary depending on their brand, quantity, warranty, and series.

Shop for Aftermarket Coolant Reservoir Caps on CarParts.com

Need to replace your coolant’s reservoir cap? Find exactly what you need here at CarParts.com with just a few clicks!

We have top-notch coolant reservoir caps for various makes and models. They’re sold individually and in sets of 6. What’s more, they come with a low-price guarantee, so it doesn’t matter if you’re shopping while on a tight budget. You’re sure to get an OE-grade coolant reservoir cap replacement at a price that won’t break the bank.

We source all our replacement parts and accessories from top aftermarket brands. Our team of industry experts handpicked every coolant reservoir cap in our catalog to make sure you’re getting the best replacement part for your vehicle.

In a hurry to repair your ride? Take advantage of our fast shipping. All our coolant reservoir caps are on hand and ready to ship from strategically located warehouses across the country. Order now, and get your new coolant reservoir cap in a matter of days. If you have any questions about our products, our friendly customer service team is available round the clock to help you out.

Enter your ride’s exact details into our easy-to-use vehicle selector to view compatible coolant reservoir cap replacements. Then, use our filters to narrow down your search according to the brand, price range, and feature you prefer. Check out our catalog and shop now!

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Helpful Automotive Resources

Is Coolant the Same as Antifreeze? Plus Other Related Questions Answered
Is Coolant the Same as Antifreeze? Plus Other Related Questions AnsweredIf this seems confusing, don’t worry. Below, we’re going to cover the ins and outs of coolant, including the subtle yet important difference between the terms coolant and antifreeze. Many professionals use the terms coolant and antifreeze interchangeably because they mean almost the same thing—almost. What’s the Difference Between Coolant and Antifreeze?