Generally
The gasket between the fuel filter holder and the glass cup, Outer diameter 53mm. Inner diam. 43mm. 2mm thick.
This gasket only fits Cadillac original fuel filter cup, if you are unsure check the dimensions and compare with your old one.
125 kr
This gasket is better than the original, thicker and softer, with better sealing ability.
The gasket between the fuel filter holder and the glass cup, Outer diameter 53mm. Inner diam. 43mm. 2mm thick.
This gasket only fits Cadillac original fuel filter cup, if you are unsure check the dimensions and compare with your old one.
Buy an extra gasket and take it with you in the car, when you get a leak in the fuel filter cup it can be impossible to find a gasket that fits.