Subaru OEM Trunk Torsion Bar - Left Hand 15-21 WRX / STI | 57529VA011 vendor_Precision Works With each model change from

With each model change from Subaru engineers the improved engine design from the GC8 to GDB and A models had the increased the rib of the outer bore diameter which improved the gas sealing characteristics

more pronounced induction tone under acceleration without requiring additional modifications

Be sure to check out our Oil Filter adaptor Plates to make installing the sender a snap

14-0146 SAE Quick Connect Fitting

maintaining factory-like Noise

Subaru OEM Trunk Torsion Bar - Left Hand 15-21 WRX / STI | 57529VA011 vendor_Precision Works With each model change fromProduct Fitment: 2015 2021 WRX 2015 2021 STI 57529VA011 THSN Bar A LH is Part Code 57521A in the diagram Warranty Disclaimer: Subaru of America will only warranty parts installed by a CERTIFIED Subaru Dealership. The part being installed must also match the vehicle VIN. IE If you install an STi block in a WRX at your friends shop, do not expect a warranty claim to come through if it explodes! Please use your best judgement.