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13069AA037 (pulley)
Even unmodified vehicles can benefit from fuel octane specific tuning
A 5mm internal hex in the end of the studs assists with installation
TGV Delete Housings
COOL UNDER PRESSURE
5th Drive Gear TY856 6MT Ratio 1.062 REM ISF:No 13069AA037 (pulley)5th drive gear for 6 speed manual transmissions with trans ID codes starting with "TY856". This is for close ratio (short) 5th 6th applications such as JDM STI. Optional REM ISF (superfinishing) treatment. ISF is a precisely controlled treatment that reduces surface roughness left from the machining processes thereby improving reliability, reducing friction, and all but eliminating break in requirements and the resulting swarf. Ideally, we recommend
