CSF All-Aluminum Filler Neck w/ 1.4 Bar High Pressure Radiator Cap - FRS/BRZ/86

Replace the weak plastic auxiliary filler neck of your FRS/BRZ/86 with an all-aluminum 100% TIG-welded and mirror polished upgraded version from CSF. Complete with a 1.4bar high-pressure cap with a high-quality “mini style” radiator cap, embossed with the CSF logo. This cap style is most commonly used with high-performance aftermarket caps if you wish to replace the CSF cap with another brand.

Easy drop-in replacement with no modifications – can be installed in less than 5 minutes.

2013-2020 Toyota 86 – OEM PN: SU00303939

2013-2016 Scion FR-S – OEM PN: SU00303939

2013-2020 Subaru BRZ – OEM PN: 45151CA000

2022+ Toyota GR86 – OEM PN: SU00309080

2022+ Subaru BRZ – OEM PN: 45151CC000

The Racing & High Performance Division of CSF Inc. strives to build and engineer the most advanced, efficient, and reliable cooling systems in the world. CSF manufacturers a wide variety of sophisticated cooling systems with more than 250 different applications, ranging from high performance all-aluminum direct-fit radiators, intercoolers, and oil coolers, to complete custom manufacturing for racecars, power sports, off-road, marine, and industrial use. All CSF cooling systems are designed and engineered to maintain optimal engine temperatures, even under the most extreme driving conditions.

With over 50 years of experience and over 40 million cooling systems sold globally, CSF has earned the industry reputation of being