{"product_id":"oimdk-dex2421jkit-tension-control-clamp-for-hayward-swim-clear-pro-grid-aluminum-hand-tighten-knob","title":"OIMDK DEX2421JKIT Tension Control Clamp for Hayward Swim-Clear \u0026 Pro-Grid — Aluminum, Hand-Tighten Knob","description":"\u003cp\u003e\u003cstrong\u003eThe OIMDK 2026 upgraded DEX2421JKIT tension control clamp is a lightweight aluminum replacement clamp kit that secures the cartridge or DE filter tank top for Hayward Swim-Clear and Pro-Grid systems.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhen a pool filter clamp becomes worn, cracked, or fails to keep the filter tank sealed, the OIMDK DEX2421JKIT offers a direct-fit replacement designed for several Hayward models. Built from corrosion-resistant aluminum and optimized for an easy hand-tighten knob, this clamp kit restores the seal and tension needed to keep water and air where they belong—inside the system. It replaces multiple OEM part numbers and fits both Swim-Clear cartridge filters and later-model Pro-Grid DE housings.\u003c\/p\u003e\n\n\u003ch3\u003eWhich Hayward filters will this clamp kit fit?\u003c\/h3\u003e\n\u003cp\u003eThis clamp is engineered to be compatible with a broad set of Hayward cartridge and DE filter models. It fits Swim-Clear cartridge models C2030, C3030, C4030, C5030 and C7030, and Pro-Grid DE models produced after 2007, including DE2420, DE3620, DE4820, DE6020 and DE7220.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect replacement for many OEM part numbers such as 4811-100 and HAY-051-9790\u003c\/li\u003e\n  \u003cli\u003eDesigned for post-2007 Hayward Pro-Grid housings\u003c\/li\u003e\n  \u003cli\u003eAlso replaces DEX2420J and other related kit numbers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow durable and weather-resistant is the OIMDK clamp?\u003c\/h3\u003e\n\u003cp\u003eThe clamp uses upgraded aluminum for a balance of light weight and corrosion resistance, so it stands up to poolside humidity and routine chemical exposure better than untreated steel. The material reduces the likelihood of rust and keeps the clamp functioning season after season with normal maintenance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAluminum alloy construction for corrosion resistance\u003c\/li\u003e\n  \u003cli\u003eKnob fastening avoids seizing common with metal-on-metal threads\u003c\/li\u003e\n  \u003cli\u003eForgiving under regular disassembly for cleaning or winterizing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is it to install and operate this replacement kit?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward: position the clamp around the tank seam, align the top and bottom housing sections, then hand-turn the knob until the tank is snug. No specialty tools are required for usual installs, and the knob design makes future removal and retightening simple during maintenance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTool-free hand-tighten knob for quick installs\u003c\/li\u003e\n  \u003cli\u003eFits the factory groove and seals without modification\u003c\/li\u003e\n  \u003cli\u003eSuitable for field replacement during routine filter servicing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat performance issues does replacing the clamp resolve?\u003c\/h3\u003e\n\u003cp\u003eReplacing a damaged or loose clamp reduces air ingestion and water leakage at the filter seam, which helps maintain proper hydraulic flow and filtration efficiency. A secure clamp also prevents uneven tank compression that can damage the filter lid or gasket over time.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHelps prevent air pockets forming inside the filter tank\u003c\/li\u003e\n  \u003cli\u003eStops water seepage from the housing seam\u003c\/li\u003e\n  \u003cli\u003eProtects the filter top and gasket from uneven stress\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Pool owners, service technicians, and maintenance pros who use Hayward Swim-Clear cartridge systems or later-model Pro-Grid DE filters and need a reliable OEM-compatible clamp replacement. Choose the OIMDK DEX2421JKIT when you want an upgraded, lightweight aluminum clamp that installs without tools, restores a tight tank seal, and replaces multiple Hayward part numbers for convenient compatibility.\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: Does this clamp replace Hayward part 4811-100?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — the OIMDK DEX2421JKIT replaces 4811-100 and several related Hayward OEM numbers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do I need tools to install the clamp?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No special tools required; the hand-tighten knob allows tool-free installation and removal.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"OIMDK","offers":[{"title":"Default Title","offer_id":56805670420820,"sku":"B0FGWC2YXV","price":215.89,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/oimdk-clamp-front-view.jpg?v=1786808746","url":"https:\/\/gardenluxe.co.uk\/products\/oimdk-dex2421jkit-tension-control-clamp-for-hayward-swim-clear-pro-grid-aluminum-hand-tighten-knob","provider":"Gardenluxe Uk","version":"1.0","type":"link"}