• Cobb [15 - 21 WRX/STI] Coolant Overflow Tank - JDMuscleOverflow Tanks / Coolant Tank and Accessoriescobb800660
  • Cobb [15 - 21 WRX/STI] Coolant Overflow Tank - JDMuscleOverflow Tanks / Coolant Tank and Accessoriescobb800660
  • Cobb [15 - 21 WRX/STI] Coolant Overflow Tank - JDMuscleOverflow Tanks / Coolant Tank and Accessoriescobb800660
  • Cobb [15 - 21 WRX/STI] Coolant Overflow Tank - JDMuscleOverflow Tanks / Coolant Tank and Accessoriescobb800660
  • Cobb [15 - 21 WRX/STI] Coolant Overflow Tank - JDMuscleOverflow Tanks / Coolant Tank and Accessoriescobb800660
  • Cobb [15 - 21 WRX/STI] Coolant Overflow Tank - JDMuscleOverflow Tanks / Coolant Tank and Accessoriescobb800660

COBB Tuning

COBB Tuning Be the first one to review

COBB Coolant Overflow Tank

Fits: 15-21 WRX/STI

$29000
Earn $5.80 In JDMuscle Rewards!
Profile Avatar

Talk to an Enthusiast

Verify Fitment & Product Recommendations

M-F 9:00AM - 6:00PM

(866) 833-3536 Email Text (610) 735-6688Text
24 in stock
Pay over time available · Est. $9.06/payment
ⓘ

Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.

Katapult Affirm Klarna Shop Pay
View all options
Pay over time available · Est. $9.06/payment
ⓘ

Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.

Katapult Affirm Klarna Shop Pay
View all options
COBB Tuning COBB Coolant Overflow Tank
Fits: 15-21 WRX/STI
Be the first one to review

Other coolant tanks for 15-21 WRX

Fitment

Please Note: COBB 800660 official fitment: 2015-2021 Subaru WRX and WRX STI applications. Aluminum coolant overflow tank retains OEM 1L capacity and is designed to improve clearance for front-mount intercooler piping.
  • 2015–2021 Subaru | WRX STI
  • 2015–2021 Subaru | WRX

Description

COBB Tuning’s Subaru Coolant Overflow Tank upgrades the factory plastic reservoir on 2015–2021 Subaru WRX and WRX STI models with a durable, space-efficient aluminum design that improves engine-bay appearance and makes room for front-mount intercooler piping while retaining OEM capacity.

  • TIG-welded aluminum tank with internal and external anodizing
  • Maintains OEM 1L coolant capacity
  • Relocated mounting position works on stock cars and with aftermarket front-mount intercoolers
  • Custom heat-resistant Delrin cap
  • Silicone adapter hose and injection-molded washer-fluid reservoir cap included
  • Single-fastener removal and re-installation for easy service
  • Product code: 800660
  • References: COBB Subaru Coolant Overflow Tank STI 2015–2021, WRX 2015–2021

Shipping and Delivery

Review our Shipping Policy for delivery details, shipping costs and exclusions.

Warranty and Support

For COBB Tuning warranty information, contact our support team.

Return and Refund

Eligibility, exclusions, applicable fees and exceptions are detailed in our Return Policy. Restrictions apply to special-order and custom products.

Proposition 65

Proposition 65 Warnings: cancer and reproductive harm www.p65warnings.ca.gov