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Fuel Injector

WARNING: This page is about a different car, the 2022 Subaru WRX. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Fuel Injector Components (With Torque Specifications)
G14600866Courtesy of SUBARU OF AMERICA, INC.

Tightening torque: N.m (kgf-m, ft-lb) 

T1: 19 (1.9, 14.0) 

T2: 46 (4.7, 33.9)