These fittings fit 1997 to mid 2010 cases. They should be 0.521".
Black AN6 X1/4NPS Oil Cooler Adapter FIT 97-07 4L80E GM Transmission Fittings
-6AN x 1/4NPSM 90Degree Banjo Fitting Fit 97-10 GM 4L80E Transmission Oil Cooler
New Upgrade Bell Housing Bolt Set Fit for LS Engine Transmission 4L60e 4L80e
8x Bell Housing Bolts Kit Fit for GM Automatic & Manual Transmission 4L60e 4L80e
4L80E Transmission Adapter Fitting Front & Rear Port -6AN Flare 6 AN 4l80e Bare
2Sets 44MM Wastegate External For Turbo W/ TIAL V-Band Flange Spring MV-R 14PSI
