Cobb Fuel Stumble/Pressure Regulator Kit - 2008-2021 Subaru STI

The Cobb 315200 Fuel Pressure Regulator Kit provides precise fuel regulation for Subaru STI models from 2008 to 2021. It features a plug‑and‑play design with OEM‑specified fittings and Dorman quick‑connect fuel connections, eliminating the need for hose cutting. The kit includes a sheathed regulator for abrasion resistance and supports multi‑fuel operation. Installation is rated intermediate to difficult, requiring basic mechanical skills and a tuning session for optimal performance. Compatibility extends to Stage 3 OTS maps, making it suitable for high‑performance applications.

                  
                                          
                        
Fitment
                        
2008-2021 Subaru STI
                      
                                          
                        
Plug-n-Play
                        
Yes
                      
                                          
                        
OEM Subaru Regulator
                        
Included
                      
                                          
                        
Fuel Fittings
                        
Dorman Quick Connect
                      
                                          
                        
Sheathing
                        
Abrasion resistant
                      
                                          
                        
Fuel Compatibility
                        
Flex fuel capable
                      
                                          
                        
Installation Effort
                        
Intermediate to Difficult
                      
                                          
                        
Tuning Required
                        
Yes, for Stage 3 OTS maps