{"product_id":"jabsco-top-valve-gasket-29042-0000-for-29090-2-and-29120-2-manual-toilets-1998-and-newer","title":"Jabsco Top Valve Gasket 29042-0000 for 29090-2 and 29120-2 Manual Toilets, 1998 and Newer","description":"\u003cp\u003eThe Jabsco Top Valve Gasket 29042-0000 is a replacement seal for the top valve assembly on Jabsco 29090-2 and 29120-2 series manual marine toilets built 1998 and newer. This gasket seats between the top valve seat and the pump cylinder housing, sealing the discharge path so the manual pump can build and hold pressure during flushing. Over time, repeated pump strokes and exposure to saltwater and waste can compress or degrade the original gasket, leading to a soft pump handle, reduced flush effectiveness, or leakage around the top valve area. Replacing this gasket restores a firm seal without requiring a full service kit or pump cylinder replacement.\u003c\/p\u003e\u003cp\u003eInstallation involves removing the top valve cover and pump cylinder to access the old gasket, cleaning the mating surfaces, and fitting the new 29042-0000 gasket in its place before reassembly. It is a genuine Jabsco part, so fit and material match the original equipment exactly, and it is manufactured from metal construction consistent with the rest of the top valve assembly. Because it addresses only the top valve gasket, it is a targeted fix for owners who do not need the broader range of seals and o-rings included in a full major service kit.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Jabsco\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 29042-0000\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Category:\u003c\/strong\u003e Marine Toilet Parts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Metal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 6.3 x 3.1 x 0.7 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.1 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 671880022354\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eJabsco 29090-2 and 29120-2 series manual toilets, 1998 and newer\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Jabsco 29042-0000 gasket fit?\u003c\/strong\u003e This gasket is designed for Jabsco 29090-2 and 29120-2 series manual toilets built 1998 and newer, sealing the top valve assembly of those models.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs 29042-0000 a genuine Jabsco part?\u003c\/strong\u003e Yes, part number 29042-0000 is a genuine Jabsco top valve gasket, not a generic aftermarket substitute, so it matches the original equipment fit and material exactly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included with this purchase?\u003c\/strong\u003e The package contains one top valve gasket (Jabsco 29042-0000); no other seals, o-rings, or hardware are included.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 29042-0000 gasket made from?\u003c\/strong\u003e The gasket is made of metal construction, matching the material used in the surrounding top valve assembly on the compatible Jabsco toilets.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of this gasket?\u003c\/strong\u003e The Jabsco 29042-0000 gasket measures 6.3 x 3.1 x 0.7 inches and weighs 0.1 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need a full service kit, or will this gasket alone fix a leak?\u003c\/strong\u003e If the leak or pressure loss is isolated to the top valve gasket area, installing 29042-0000 alone can resolve it; a broader major service kit is only needed if other seals in the pump assembly are also worn.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this gasket fit older Jabsco toilets made before 1998?\u003c\/strong\u003e No, the 29042-0000 top valve gasket is specified for 29090-2 and 29120-2 series manual toilets from 1998 and newer; earlier models are not covered by this part number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I install the 29042-0000 gasket?\u003c\/strong\u003e Installation requires removing the pump cylinder and top valve cover to access the old gasket, cleaning the sealing surfaces, and fitting the new 29042-0000 gasket before reassembling the pump.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat symptoms indicate the top valve gasket needs replacing?\u003c\/strong\u003e A soft or spongy pump handle, weak flush pressure, or visible leakage around the top valve area on a Jabsco 29090-2 or 29120-2 toilet are common signs the 29042-0000 gasket has worn out.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use this gasket with the 29045-2000 or 29045-3000 service kits?\u003c\/strong\u003e The 29042-0000 gasket is a standalone top valve gasket; it is a different part from the broader 29045-2000 and 29045-3000 major service kits, which include multiple additional seals and components.\u003c\/p\u003e","brand":"Jabsco","offers":[{"title":"Default Title","offer_id":49028222255323,"sku":"ITT-29042-0000","price":25.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/ITT-29042-0000_lg__78348.1558114558.500.750.jpg?v=1785164566","url":"https:\/\/www.goodvibesmarina.com\/products\/jabsco-top-valve-gasket-29042-0000-for-29090-2-and-29120-2-manual-toilets-1998-and-newer","provider":"Good Vibes Marina","version":"1.0","type":"link"}