
Alloy Coolant Expansion Tank With Sight Glass for Mustang 2015-23 | #HTFMUSTANGWSG | Pro Alloy
Coolant Expansion Tank
for Ford Mustang 2.3L EcoBoost / 5.0L GT 2015-23
Manufactured by Pro Alloy | #HTFMUSTANGWSG

Pro Alloy's alloy header tank is designed to fit the 6th Gen S550 Mustang with either the 2.3L EcoBoost or 5.0L V8 engine.
This tank mounts the same way as the OEM unit and comes with all mounting sundries to make the new tank a simple fit. There’s no need to change the original cap as this tank is designed to use the original.
Available in either textured black powder coat as well as the classic mirror polished finish.
To keep an eye on the all-important coolant level, installed is a billet sight glass as standard.
Features:
- Uses OEM mounting points
- Reuses OEM expansion tank cap
- Available in Mirror Polished or Textured Black finish
- Includes billet sight glass
- Pro Alloy branding engraved
- Made in the UK
Vehicle applications:
- Ford Mustang S550 2.3L EcoBoost & 5.0L GT - 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023
- Includes Bullitt & Mach 1.
Coolant Expansion Tank
for Ford Mustang 2.3L EcoBoost / 5.0L GT 2015-23
Manufactured by Pro Alloy | #HTFMUSTANGWSG

Pro Alloy's alloy header tank is designed to fit the 6th Gen S550 Mustang with either the 2.3L EcoBoost or 5.0L V8 engine.
This tank mounts the same way as the OEM unit and comes with all mounting sundries to make the new tank a simple fit. There’s no need to change the original cap as this tank is designed to use the original.
Available in either textured black powder coat as well as the classic mirror polished finish.
To keep an eye on the all-important coolant level, installed is a billet sight glass as standard.
Features:
- Uses OEM mounting points
- Reuses OEM expansion tank cap
- Available in Mirror Polished or Textured Black finish
- Includes billet sight glass
- Pro Alloy branding engraved
- Made in the UK
Vehicle applications:
- Ford Mustang S550 2.3L EcoBoost & 5.0L GT - 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023
- Includes Bullitt & Mach 1.
Original: $578.15
-65%$578.15
$202.35Description
Coolant Expansion Tank
for Ford Mustang 2.3L EcoBoost / 5.0L GT 2015-23
Manufactured by Pro Alloy | #HTFMUSTANGWSG

Pro Alloy's alloy header tank is designed to fit the 6th Gen S550 Mustang with either the 2.3L EcoBoost or 5.0L V8 engine.
This tank mounts the same way as the OEM unit and comes with all mounting sundries to make the new tank a simple fit. There’s no need to change the original cap as this tank is designed to use the original.
Available in either textured black powder coat as well as the classic mirror polished finish.
To keep an eye on the all-important coolant level, installed is a billet sight glass as standard.
Features:
- Uses OEM mounting points
- Reuses OEM expansion tank cap
- Available in Mirror Polished or Textured Black finish
- Includes billet sight glass
- Pro Alloy branding engraved
- Made in the UK
Vehicle applications:
- Ford Mustang S550 2.3L EcoBoost & 5.0L GT - 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023
- Includes Bullitt & Mach 1.

















