and 86mm pistons require sleeving the block

3/16" (5mm)

the 148mm-length rods are ideal for high-horsepower and forced induction applications

-Aluminum Threaded Block (x1)-12AN ORB to 12AN Male Fitting (x1)-10AN ORB to 10AN Male Fitting (x3)-10AN ORB Plug Fitting (x1)-Stainless M5x0

Supports various sensors including wideband O2

Radium Engineering Direct Mount Filler Filler Configuration:20-1197-V FCST-X - Fill Neck & Cap - Vented and 86mm pistons require sleevingInstallation Instructions These fuel fillers are designed to mount directly to Radium Engineering fuel cell surge tanks. There are fuel fillers on this page specific to both the FCST and the FCST X. FCST DIRECT MOUNT FUEL FILLERS The direct mount fuel fillers listed below are specific to the following FCSTs ONLY: 20 014X XX, 20 049X XX, 20 069X XX, and 20 099X XX. NOTE: Direct mount fuel fillers for the newer FCST X (20 199X XX) can be found towards