{"product_id":"pentair-triton-filter-tank-lid-8-1-2-black-buttress-thread-direct-fit-replacement","title":"Pentair Triton filter tank lid, 8-1\/2\" Black — buttress-thread direct-fit replacement","description":"\u003cp\u003e\u003cstrong\u003eReplacement Pentair tank lid kit for Triton II\/C-3\/TR100C\/TR140C filters — 8-1\/2\" black buttress-thread closure that restores a secure, leak-resistant seal.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhen your Triton-series pool or spa filter lid becomes worn, cracked, or difficult to seal, this Pentair 154856 buttress thread closure kit provides a direct-fit replacement engineered for the Triton II, C-3, TR100C and TR140C housings. The kit reproduces the original lid dimensions and thread profile so you can reinstall a dependable cover quickly without replacing the entire filter tank. It’s designed for straightforward swap-outs and to match the factory fit and finish in both appearance and function.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this lid kit fit my Triton filter?\u003c\/h3\u003e\n\u003cp\u003eThe Pentair kit is manufactured to the same specifications as the original Triton lid, including the 8-1\/2\" diameter and buttress thread pattern. That means it threads into the existing tank collar and aligns with the factory seal surface for a tight fit.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible models: Triton II, C-3, TR100C, TR140C.\u003c\/li\u003e\n  \u003cli\u003e8-1\/2\" diameter matches original factory lid sizing.\u003c\/li\u003e\n  \u003cli\u003eButtress-style threading for secure mechanical engagement.\u003c\/li\u003e\n  \u003cli\u003eDirect replacement—no tank modification required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and finish should I expect?\u003c\/h3\u003e\n\u003cp\u003eThe lid is molded in durable black thermoplastic engineered for pool and spa environments, providing resistance to chlorine and UV exposure typical of outdoor installations. Its finish matches common Pentair aesthetic standards and is built for repeated installation and removal.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBlack thermoplastic construction for chemical and UV resistance.\u003c\/li\u003e\n  \u003cli\u003ePrecision molded thread profile for long-term engagement.\u003c\/li\u003e\n  \u003cli\u003eSmooth sealing surface to mate with existing O-rings or gaskets.\u003c\/li\u003e\n  \u003cli\u003eFactory color and texture to blend with the filter tank.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is installation and what tools are needed?\u003c\/h3\u003e\n\u003cp\u003eInstalling the replacement closure is a simple maintenance task that most pool owners or service techs can complete in minutes. You’ll typically remove the old lid, inspect or replace the O-ring, then thread in the new closure hand-tight plus a small final turn with a strap wrench if needed.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMinimal tools: strap wrench or large pliers with padding recommended.\u003c\/li\u003e\n  \u003cli\u003eInspect and lubricate O-ring or replace if brittle before installation.\u003c\/li\u003e\n  \u003cli\u003eHand-thread first to avoid cross-threading, then snug to seal.\u003c\/li\u003e\n  \u003cli\u003eFollow standard safety: depressurize system prior to removal\/installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this lid prevent leaks and restore performance?\u003c\/h3\u003e\n\u003cp\u003eReplacing a degraded lid with this genuine Pentair closure restores the original mechanical seal interface, reducing the chance of leaks caused by cracked or stripped closures. Proper installation with a good O-ring improves pressure retention and filter performance comparable to factory condition.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReplaces worn or cracked lid that can cause bypass or leaks.\u003c\/li\u003e\n  \u003cli\u003eRestores correct sealing distance and thread engagement.\u003c\/li\u003e\n  \u003cli\u003eWorks with existing tank gasket or newly replaced O-ring for best results.\u003c\/li\u003e\n  \u003cli\u003eHelps maintain intended filter pressure and flow characteristics.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This Pentair 154856 8-1\/2\" black buttress-thread tank lid kit is intended for pool and spa owners, maintenance professionals, and service centers that operate Triton II, C-3, TR100C or TR140C filters. Choose this part when you need a direct, OEM-compatible replacement to stop leaks, restore correct sealing geometry, and avoid the cost of a full tank replacement. If you’re unsure about model compatibility, check your filter model plate or consult Pentair documentation before ordering.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this Pentair lid compatible with my Triton TR100C filter?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — the 154856 lid fits Triton II, C-3, TR100C and TR140C models with an 8-1\/2\" buttress-thread closure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do I need a new O-ring when replacing the lid?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: You should inspect and replace a brittle or flattened O-ring; a fresh O-ring ensures a proper seal and prevents leaks.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":56806001246548,"sku":"B0043EN2BS","price":277.8,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/pentair-tank-lid-front-view.jpg?v=1786811248","url":"https:\/\/gardenluxe.co.uk\/products\/pentair-triton-filter-tank-lid-8-1-2-black-buttress-thread-direct-fit-replacement","provider":"Gardenluxe Uk","version":"1.0","type":"link"}