{"product_id":"dorman-aluminum-a-c-line-block-off-for-5-16-line-800-994-corrosion-resistant-seal","title":"Dorman Aluminum A\/C Line Block-Off for 5\/16\" Line — 800-994, Corrosion-Resistant Seal","description":"\u003cp\u003e\u003cstrong\u003eThe Dorman 800-994 is an aluminum block‑off designed to securely seal a 5\/16\" air conditioning line, restoring system integrity while resisting corrosion.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhen a short section of A\/C hard line or tubing is damaged, the Dorman 800-994 Aluminum Line Block Off offers a focused, cost‑effective alternative to replacing the entire assembly. Built from durable aluminum, this block‑off stops leaks, helps return the system to proper operating temperatures, and reduces the risk of future failure from rust or corrosion. It installs quickly and is compatible with standard 5\/16\" lines used in many automotive systems.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this block‑off help fix a leaking A\/C line?\u003c\/h3\u003e\n\u003cp\u003eThe Dorman 800-994 provides a reliable mechanical seal to isolate a damaged section of tubing without the expense and labor of replacing the entire line. It restores a closed refrigerant circuit so the compressor, evaporator, and condenser can operate normally again.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSeals a 5\/16\" A\/C hard line leak point to prevent refrigerant loss\u003c\/li\u003e\n  \u003cli\u003eAluminum body resists rust that can cause repeat failures\u003c\/li\u003e\n  \u003cli\u003eSaves time compared with full-line replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs the 800-994 simple to install for DIY and shop technicians?\u003c\/h3\u003e\n\u003cp\u003eYes—this part is engineered for straightforward installation so technicians can repair only the failed section. Typical installation requires basic hand tools and standard A\/C service procedures; it’s a practical option for fast turnaround.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eQuick fit for 5\/16\" diameter lines with common shop tools\u003c\/li\u003e\n  \u003cli\u003eReduced labor compared to removing and replacing assemblies\u003c\/li\u003e\n  \u003cli\u003eCompatible with Dorman’s A\/C Line Repair Kit options for expanded repairs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat makes this aluminum block‑off more durable than other options?\u003c\/h3\u003e\n\u003cp\u003eConstructed from corrosion‑resistant aluminum, the 800-994 is less prone to rust and degradation than many plated or steel alternatives. That material choice helps prolong the life of the repair and limits the chance of future leaks at the same joint.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAluminum construction resists oxidation and environmental corrosion\u003c\/li\u003e\n  \u003cli\u003eSturdy build maintains seal under typical automotive operating conditions\u003c\/li\u003e\n  \u003cli\u003eDesigned to hold refrigerant pressure when installed correctly\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat support is available if I need help selecting or installing this part?\u003c\/h3\u003e\n\u003cp\u003eDorman backs this product with technical assistance from certified specialists, so technicians and DIYers can get guidance on fitment, installation best practices, and compatibility. Documentation and customer support help minimize installation errors and speed diagnostics.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAccess to Dorman ASE Blue Seal Certified technical support\u003c\/li\u003e\n  \u003cli\u003ePart also available within Dorman A\/C Line Repair Kits for comprehensive fixes\u003c\/li\u003e\n  \u003cli\u003eProduct literature and fitment guidance for common vehicle applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The Dorman 800-994 Aluminum Line Block Off is ideal for automotive technicians, service shops, and experienced DIYers who need a durable, economical way to stop a refrigerant leak on a 5\/16\" A\/C hard line. If you want to save labor and parts cost by repairing only the damaged section—while choosing a corrosion‑resistant solution backed by manufacturer support—this block‑off is a practical component to keep on hand.\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: What line size does the Dorman 800-994 fit?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It is designed specifically for 5\/16\" air conditioning hard lines.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I install this block‑off myself?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — experienced DIYers can install it with basic tools, but follow A\/C service safety procedures.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":48086126395550,"sku":"B0083H5JAS","price":45.72,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/dorman-800-994-front-view.jpg?v=1785885711","url":"https:\/\/northtrailauto.ca\/products\/dorman-aluminum-a-c-line-block-off-for-5-16-line-800-994-corrosion-resistant-seal","provider":"North Trail Auto","version":"1.0","type":"link"}