GBR 845-12121 Fuel Injector

Reman GDI Fuel Injector for Mazda 3

GBR 845-12121 is a remanufactured OEM-style fuel injector for select 2016-2018 Mazda 3 models. It is built for direct replacement service and is tested across multiple operating conditions to verify flow rate, spray pattern, coil resistance, form, fit, and function.

The GBR Reman GDI Fuel Injector line focuses on restoring OE-level performance through a controlled remanufacturing process in the USA. This part number, 845-12121, is a practical choice for a Mazda 3 fuel injector replacement when the original injector shows drivability or fueling issues.

Key Features

• Remanufactured OEM fuel injector for direct-fit service
• Tested under multiple operating conditions for consistent output
• Verified for flow rate, spray pattern, coil resistance, form, fit, and function
• Includes new external seals and O-rings
• Built for 2016-2018 Mazda 3 applications
• Cross-reference: PEAR13250

Detailed Description

GBR 845-12121 is a reman GDI fuel injector engineered for 2016, 2017, and 2018 Mazda 3 vehicles. It is remanufactured from OEM components using a structured process and then tested to confirm performance characteristics that matter in modern direct injection systems. For buyers searching for a 2016-2018 Mazda 3 fuel injector, this part provides a direct replacement option with the correct OE-style fit and function.

This injector is intended for vehicles listed with OE number PEAR13250. If you are replacing a Mazda 3 fuel injector due to rough idle, misfire, fuel trim concerns, or hard starting, part number 845-12121 is the application-specific replacement to verify against your original unit.

What It Is Used For

• Replacing a leaking or worn direct injection fuel injector
• Addressing misfire codes related to fuel delivery
• Correcting rough idle or uneven engine operation
• Restoring proper spray pattern and fuel atomization
• Replacing an injector that no longer meets OE flow or resistance specs

Installation Notes and Tips

Confirm OE number PEAR13250 before ordering. For Mazda 3 injector service, follow the vehicle service procedure and inspect the fuel system for contamination before installation. The manufacturer notes that the fuel filter should be replaced when the injector is replaced, and references Technical Bulletin TB-0119-EFS.

Quality Assurance

GBR remanufactures this injector in a U.S.A. facility using a 15-step process and tests each unit to meet or exceed OE specifications for key operating characteristics. New external seals and O-rings are included for service readiness.