PRL Motorsports Baffled Coolant Expansion Tank
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PRL Motorsports Baffled Coolant Expansion Tank - Honda Civic Type R (FK8) / (FL5)
This kit swaps the factory plastic coolant expansion tank, which can weaken and crack with heat and pressure cycles, for a fully welded aluminium tank. It holds 1.25 L against the factory 0.55 L, so more coolant is on hand to carry heat away. Internal baffles stop coolant sloshing and cavitation under hard driving.
Note: Supplied in black anodised finish with fittings for both the Civic Type R (FK8 and FL5) and the 10th-gen Civic 1.5T. Installation by a professional is recommended.
Features
- 3mm 6061 aluminium, laser cut and TIG welded
- 1.25 L capacity, more than double the factory 0.55 L tank
- Internal baffling to prevent sloshing and cavitation
- Black anodised finish with laser-engraved logos
- Billet-machined barb fittings and 10AN sight glass
- Buna-N O-rings for heat and leak resistance
Pairs Well With
- PRL Motorsports Turbocharger Gasket & Hardware Kit - Honda Civic Type R (FK8 / FL5)
- Radium Engineering Fluid Lock Dual Catch Can Kit - Honda Civic Type R (FK8 / FL5)
- JUN AUTO Oil Filler Cap – Honda Civic Type R (FK8/FL5)
- PRACWORKS Intake Manifold Plenum – Polished Red Honda Civic Type R FK8 / FL5
- JUN AUTO Valve Cover – Honda Civic Type R (FK8/FL5)
- PRL Motorsports Helix Air Oil Separator - Honda Civic Type R (FL5)
- PRL Motorsports Billet Battery Tie Down V3 - Honda Civic Type R (FK8 / FL5) / Civic (FC / FK / FL) / Accord (CV)
- PRL Motorsports Billet Oil Cap V2 - Honda Civic Type R (FK8 / FL5) / Civic 1.5T (FC / FK / FL) / Accord 1.5T (CV)
- PRL Motorsports 1.3 Bar Radiator Cap Type-A - Honda Civic Type R (FK8 / FL5) / Civic 1.5T (FC / FK)
Need help confirming fitment? Contact our team at sales@chicaneaustralia.com.au.
Product
- Brand
- PRL Motorsports
- Finish
- Black anodised, laser-engraved logos
- Part number(s)
- PRL-EXPTNK-BLK
Details
- Product
- Coolant expansion tank
- Material
- 3mm 6061 aluminium, TIG welded
- Capacity
- 1.25 L (factory 0.55 L)
- Internal
- Baffled
- Fittings
- Billet barb fittings, 10AN sight glass
- Seals
- Buna-N O-rings
- Replaces
- Factory plastic coolant expansion tank
Contents
- 1 x Fully welded and anodised expansion tank (black)
- 1 x 1/16" NPT 8mm barb fitting
- 2 x 8AN ORB 14mm barb fittings
- 1 x 8AN ORB 17mm barb fitting
- 1 x 8AN ORB 8mm barb fitting
- 1 x 10AN sight glass
Vehicle fitment
Universal fit: this part suits any car. Check the specifications above for sizes and fittings.
| Make | Model | Chassis | Years | Versions | Engine | Brakes | Position |
|---|
Can’t see your car? Ask us and we’ll check fitment for you.

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