Bialetti Parts & Accessories

The gasket seals the pot's two chambers so pressure can build, and the filter plate helps keep coffee grounds out of the upper chamber. In a Bialetti espresso maker, the rubber gasket sits under the filter plate in the upper chamber, and screwing the pot together compresses it into an airtight seal. That seal lets steam pressure push hot water through the coffee, so a worn or missing gasket loses pressure and leaves you with weak, sputtering coffee.

You find the right Bialetti parts by matching them to your pot's model line and cup size, since gaskets and filters are both model- and size-specific. The aluminum Moka Express and the stainless Venus have different dimensions, so a Moka Express set will not fit a Venus, even at the same cup count. Check the cup size stamped on the base of the pot, remembering that Bialetti counts a cup as a small espresso serving, not a mug. If you don't have the marking or the box, measure the outside diameter of the old gasket and match it to the size you need.

Bialetti replacement parts are sized to each pot's cup capacity, not a universal size. For the aluminum Moka Express, we carry sets for the 3- and 4-cup pots, which share a single size, plus the 6-cup and the 9-cup. For the stainless Venus, we carry 4-cup, 6-cup, and 10-cup sets. Match the set to your pot's cup count, and note that the 3- and 4-cup Moka Express is the one case where a single size covers two pots.

You can replace the gasket and the filter plate together, which is why our sets include both, or change the gasket alone if the plate is still good. The gasket hardens and wears with heat and use, so it fails first. The metal filter plate lasts longer, but a fresh screen keeps the grounds barrier working as well as the seal, so swapping both at once is the cleanest option. If your filter plate is still flat and clean, reusing it and changing only the gasket is fine.

A Bialetti replacement set includes the gasket (s) and filter plate for your pot, and the exact contents depend on the model and size. Some sets include more than one rubber gasket, so you get a supply of seals in a single purchase, while others pair one gasket with one filter. Check the specific set listing for your pot, since the count varies by model and size.

You should replace a Bialetti gasket every one to two years depending on use, and sooner if you brew daily, since heat and pressure wear the rubber faster the more you use it. Replace it earlier if it leaks or the brewing performance changes before then. Keeping a spare on hand means you are never without your morning coffee when the old one gives out.

You can tell a gasket needs replacing when the pot starts leaking, or the coffee turns weak. Steam or coffee escaping from the seam where the two halves meet is the clearest sign the seal has failed. The rubber itself often looks worn by then, going hard, cracked, stiff, or flattened out of its round shape. Sputtering or under-extracted coffee that used to brew cleanly points the same way, since a worn seal may no longer hold pressure properly.

Yes, these are genuine Bialetti replacement parts, not generic aftermarket copies. We stock the authentic rubber gaskets and filter plates Bialetti makes for its own pots, which matters because a moka gasket has to seal precisely to hold pressure, and an off-size or wrong-material copy can leak or affect the brew. We carry the correct genuine part for your specific model rather than an off-size universal fit, the way a family-run store has since 1929.

The 4-, 6-, and 10-cup Venus makers we carry are induction-compatible, since the stainless Venus is built for induction as well as gas and electric. The aluminum Moka Express does not work directly on an induction hob, because aluminum is not magnetic. If you cook on induction, the Venus is the Bialetti espresso maker to choose, though it is worth checking your cooktop's minimum pan diameter against the pot's base. Both lines sit alongside the rest of our coffee accessories if you want to compare brewers before deciding.