CSF 8044 All-Aluminum Filler Neck Scion FR-S Subaru BRZ Toyota 86 FA20

Vehicle Fitment

• 2013-2016 Scion FR-S (FA20 2.0L H4, RWD Manual/Automatic)
• 2013-2020, 2022-2026 Subaru BRZ (FA20 / FA24 2.0L / 2.4L H4, RWD Manual/Automatic)
• 2017-2020, 2022-2026 Toyota 86 / GR86 (FA20 / FA24 2.0L / 2.4L H4, RWD Manual/Automatic)

Fitment Notes

• Direct-fit replacement for the factory coolant filler neck - no modifications required; installs in under 5 minutes
• The factory plastic filler neck on the FR-S/BRZ/86 platform is well documented to crack under thermal cycling and to break during radiator removal for servicing - the CSF 8044 replaces it permanently with all-aluminum construction
• Includes a 1.4 bar high-pressure mini-style radiator cap - compatible with the stock cap location; the higher pressure rating raises the coolant's boiling point for additional thermal protection
• Compatible with both FA20 (2013-2020) and FA24 (2022+) platform generations - confirm before ordering on the GR86 / BRZ Gen 2 application

Features

• All-aluminum construction - eliminates the cracking and breakage failures of the OEM plastic filler neck, providing long-term durability across the repeated thermal cycling and occasional radiator service procedures typical of FA20/FA24 builds
• 100% TIG-welded and mirror polished - strong, clean construction with a premium show-quality finish well-suited to built engine bays
• Mini-style cap profile matches the factory filler neck packaging and cap size for a true drop-in installation
• Includes 1.4 bar (approx. 20 psi) high-pressure mini radiator cap - raises the coolant system boiling point above the factory cap rating for added margin under spirited driving, track use, and performance builds
• No modifications required - plug-and-play replacement that bolts directly to the factory location in minutes
• Limited lifetime warranty

Specifications

• Part Number: CSF 8044
• Part Type: All-Aluminum Coolant Filler Neck with High-Pressure Radiator Cap
• Construction: All-Aluminum, 100% TIG-Welded
• Finish: Mirror Polished
• Cap Style: Mini-style high-pressure radiator cap
• Cap Pressure Rating: 1.4 bar (approx. 20.3 psi)
• Application: 2013-2026 Scion FR-S / Subaru BRZ / Toyota 86 / GR86
• Warranty: Limited Lifetime

Included Components

• 1x CSF 8044 All-Aluminum Coolant Filler Neck (mirror polished)
• 1x 1.4 bar Mini High-Pressure Radiator Cap

Product Description

The CSF 8044 is a direct-fit all-aluminum coolant filler neck for the 2013-2026 Scion FR-S, Subaru BRZ, and Toyota 86/GR86 platform. The factory filler neck on these vehicles is a plastic unit known to crack from heat cycling over time and to break during radiator removal - a common service point on these platforms for cooling upgrades and engine work. The CSF 8044 replaces it permanently with a 100% TIG-welded all-aluminum construction that mirrors the factory mounting and cap dimensions for a plug-and-play installation requiring no modifications and taking under five minutes to complete.

The 8044 includes a 1.4 bar high-pressure mini-style radiator cap, which raises the coolant system's boiling point above the factory cap rating - providing additional thermal headroom for track use, spirited driving, and performance builds. The mirror polish finish adds a premium visual element to engine bay builds where aesthetics matter alongside function. Backed by a limited lifetime warranty.