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Subaru Thread Pitch and Hardware Information


Front and rear O2 sensor plug = M18 x 1.5

Up-pipe EGT plug = M12 x 1.25

ECU cover plate = M6 x 1.0

Intake manifold to TGV risers = M6 x 1.00 x 40

Sway bar bolts (bushings and endlinks), strut tops, ram intake duct, the spare tire hold-down, plastic splash shield, and jacking plate = M8 x 1.25

Exhaust bolts and a bunch of other stuff under the hood (green brackets for fuel rail, radiator mount) = M10 x 1.25

EGT bung, lug nuts, and shift knob = M12 x 1.25

Gallery threading on the block for oil pressure/temp sensors = M18 x 1.5

Oil drain bolt = M20 x 1.5

Uppipe stud: automotive stud, M10 x 1.25 by 41mm

The female fitting on the clutch line is M10x1.00

The banjos on the brake calipers are also M10x1.00

The banjo on the turbo for the oil feed line is M10X1.5

Top-mount intercooler mounting bolts are 8X1.25

Rear seat upper part (3 of them) are 10x1.25

Rear seat lower part (2 of them) are 8x1.25

Front fender attachment inside the engine bay is M6 x 1.0 x 10

Breather lines attaching to TMIC (3) are M6 x 1.0 x 10

COBB Rear Sway Bushing Bracket to Mount are M10 x 1.5 - 25mm Length Socket Head Cap Screw, Black Oxide

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