{"id":2853,"date":"2026-10-11T14:19:23","date_gmt":"2026-10-11T14:19:23","guid":{"rendered":"https:\/\/www.jlinlin.com\/?post_type=product&#038;p=2853"},"modified":"2026-10-11T14:22:53","modified_gmt":"2026-10-11T14:22:53","slug":"male-90-degree-3-4-6-8-10-12an-bulkhead-full-flow-fitting-adapter-aluminum-with-3-4-6-8-10-12an-nut-black","status":"publish","type":"product","link":"https:\/\/www.jlinlin.com\/index.php\/product\/male-90-degree-3-4-6-8-10-12an-bulkhead-full-flow-fitting-adapter-aluminum-with-3-4-6-8-10-12an-nut-black\/","title":{"rendered":"Male 90 Degree 3\/4\/6\/8\/10\/12AN Bulkhead Full Flow Fitting Adapter Aluminum with 3\/4\/6\/8\/10\/12AN Nut Black"},"content":{"rendered":"<p><h2>Specifications<\/h2>\n<\/p>\n<p><!-- ===== Product Details ===== --><\/p>\n<h2>Product Details<\/h2>\n<table style=\"width: 100%; height: 313.594px;\">\n<thead>\n<tr style=\"height: 19.5996px;\">\n<td style=\"text-align: left; height: 19.5996px;\"><strong>Specification<\/strong><\/td>\n<td style=\"text-align: left; height: 19.5996px;\"><strong>Details<\/strong><\/td>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"height: 19.5996px;\">\n<td style=\"height: 19.5996px;\"><strong>Brand<\/strong><\/td>\n<td style=\"height: 19.5996px;\"><\/td>\n<\/tr>\n<tr style=\"height: 19.5996px;\">\n<td style=\"height: 19.5996px;\"><strong>Material<\/strong><\/td>\n<td style=\"height: 19.5996px;\">Aluminum Alloy 6061-T6 (Anodized Black)<\/td>\n<\/tr>\n<tr style=\"height: 117.598px;\">\n<td style=\"height: 117.598px;\"><strong>Size<\/strong><\/td>\n<td style=\"height: 117.598px;\">3AN: 3\/8-24 UNF<br \/>4AN: 7\/16-20 UNF<br \/>6AN: 9\/16-18 UNF<br \/>8AN: 3\/4-16 UNF<br \/>10AN: 7\/8-14 UNF<br \/>12AN: 1-1\/16-12 UNF\n<\/td>\n<\/tr>\n<tr style=\"height: 19.5996px;\">\n<td style=\"height: 19.5996px;\"><strong>Color<\/strong><\/td>\n<td style=\"height: 19.5996px;\">Black<\/td>\n<\/tr>\n<tr style=\"height: 19.5996px;\">\n<td style=\"height: 19.5996px;\"><strong>Connector Type<\/strong><\/td>\n<td style=\"height: 19.5996px;\">Adapter<\/td>\n<\/tr>\n<tr style=\"height: 19.5996px;\">\n<td style=\"height: 19.5996px;\"><strong>Thread Type<\/strong><\/td>\n<td style=\"height: 19.5996px;\">UNF<\/td>\n<\/tr>\n<tr style=\"height: 19.5996px;\">\n<td style=\"height: 19.5996px;\"><strong>Max Working Pressure<\/strong><\/td>\n<td style=\"height: 19.5996px;\">1500 PSI<\/td>\n<\/tr>\n<tr style=\"height: 19.5996px;\">\n<td style=\"height: 19.5996px;\"><strong>Temperature Range<\/strong><\/td>\n<td style=\"height: 19.5996px;\">-63\u00b0F to 252\u00b0F<\/td>\n<\/tr>\n<tr style=\"height: 19.5996px;\">\n<td style=\"height: 19.5996px;\"><strong>Seal Type<\/strong><\/td>\n<td style=\"height: 19.5996px;\">37\u00b0 AN Flare (Metal-to-Metal)<\/td>\n<\/tr>\n<tr style=\"height: 19.5996px;\">\n<td style=\"height: 19.5996px;\"><strong>Manufacturer<\/strong><\/td>\n<td style=\"height: 19.5996px;\">Speedwow Tuning<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><h2>Description<\/h2>\n<\/p>\n<h2>\n<meta charset=\"utf-8\">90 Degree AN Bulkhead Full Flow Fitting Overview<\/h2>\n<p><!-- ===== About this item ===== --><\/p>\n<p> 90 Degree Bulkhead Full Flow Fitting \u2014 the clean way to route fuel lines through firewalls, fuel cells, and custom panels. CNC-machined from 6061-T6 aluminum with a black anodized finish, this fitting features an <strong>enlarged internal bore<\/strong> (Full Flow) that <meta charset=\"utf-8\">reduces internal restriction compared with conventional <span style=\"color: rgb(255, 42, 0);\"><strong><a style=\"color: rgb(255, 42, 0);\" href=\"\/collections\/bulkhead-fittings\">bulkhead fittings<\/a><\/strong><\/span> found in standard bulkheads. The 37\u00b0 AN flare seat provides a metal-to-metal seal rated to 1500 PSI across a -63\u00b0F to 252\u00b0F temperature range. Includes a matching AN nut.<\/p>\n<p><meta charset=\"utf-8\"><img decoding=\"async\" style=\"margin-bottom: 16px; float: none;\" alt=\"6061-T6 aluminum AN bulkhead fitting with black anodized finish\" data-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0590\/5403\/0984\/files\/A_PC_-1_b4fb40eb-91bc-4967-bbb6-3c13337b8017.jpg?v=1783678748\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\"><\/p>\n<p><!-- ===== Key Features ===== --><\/p>\n<h2>Key Features<\/h2>\n<ul>\n<li>\n<strong>Available in 3AN to 12AN sizes:<\/strong> Precision pass-through fitting with 3\/8-24 UNF thread and full flow design. Routes fuel lines clean through firewalls, fuel cells, and panels without restricting flow.<\/li>\n<li>\n<strong>1500 PSI Max Working Pressure:<\/strong> Rated for high-pressure fuel systems with an operating temperature range of -63\u00b0F to 252\u00b0F \u2014 handles everything from cold starts to sustained heat soak.<\/li>\n<li>\n<strong>6061-T6 Aluminum \u2014 Anodized Black:<\/strong> CNC-machined from aerospace-grade billet aluminum with a durable black anodized finish that resists corrosion and looks clean under the hood.<\/li>\n<li>\n<strong>37\u00b0 AN Flare Seal:<\/strong> Precision-machined flare angle provides a metal-to-metal seal without gaskets or crush washers. Delivers reliable, leak-free performance in fuel delivery, return lines, and custom fuel system builds.<\/li>\n<li>\n<strong>Multi-Size Available:<\/strong> Also offered in 4AN, 6AN, 10AN, and 12AN sizes.\u00a0<\/li>\n<\/ul>\n<p><meta charset=\"utf-8\"><img decoding=\"async\" style=\"float: none;\" alt=\"AN bulkhead fitting 37 degree flare metal seal design\" data-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0590\/5403\/0984\/files\/A_PC_-2_bf671a5b-6cd6-43a8-a76e-906153ebc740.jpg?v=1783678768\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\"><\/p>\n<p><!-- ===== Where does a 90\u00b0 bulkhead go? ===== --><\/p>\n<h3>Where does a 90 Degree bulkhead fitting go?<\/h3>\n<p>The 90-degree bulkhead fitting is purpose-built for clean firewall and panel pass-throughs. Route fuel lines through your firewall, fuel cell lid, surge tank, or custom panel with a single sealed fitting \u2014 no more drilling oversized holes or fighting hose routing angles. The 90\u00b0 orientation mounts flat against a panel and exits at a right angle, keeping your fuel system lines tidy and stress-free.<\/p>\n<p><!-- ===== Full Flow vs Standard ===== --><\/p>\n<h3>Full Flow vs Standard \u2014 what&#8217;s the difference?<\/h3>\n<p>Full Flow bulkhead fittings feature an enlarged internal bore that matches or exceeds the AN hose ID. Unlike standard bulkheads that neck down and restrict flow, the full flow design maintains a consistent cross-sectional area through the fitting. This matters for high-volume fuel pumps, E85 conversions, and boosted applications where maintaining consistent fuel flow is critical.<\/p>\n<h2>How Do You Choose The Right AN Bulkhead Fitting Size?<\/h2>\n<table>\n<thead>\n<tr>\n<th>AN Size<\/th>\n<th>Common Application<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>3AN<\/td>\n<td>Small fuel return and compact systems<\/td>\n<\/tr>\n<tr>\n<td>6AN<\/td>\n<td>Most EFI fuel systems<\/td>\n<\/tr>\n<tr>\n<td>8AN<\/td>\n<td>High flow fuel systems<\/td>\n<\/tr>\n<tr>\n<td>10AN<\/td>\n<td>High horsepower applications<\/td>\n<\/tr>\n<tr>\n<td>12AN<\/td>\n<td>Large fuel delivery systems<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><!-- ===== Why Choose ===== --><\/p>\n<article>\n<h2>Why Choose 90 Degree Bulkhead Full Flow Fitting?<\/h2>\n<ul>\n<li>\n<strong>Full Flow Internal Bore:<\/strong> No neck-down restriction. The bore diameter matches your AN hose ID, so your fuel pump&#8217;s full output reaches the rail without a bottleneck at the bulkhead.<\/li>\n<li>\n<strong>CNC-Machined 6061-T6 Billet:<\/strong> Every fitting is machined from solid bar stock \u2014 not cast, not molded. Consistent thread pitch, clean flare seats, zero porosity.<\/li>\n<li>\n<strong>37\u00b0 AN Flare Metal-to-Metal Seal:<\/strong> No o-rings to swell, no gaskets to crush. The 37\u00b0 flare mates with any standard AN hose end for a leak-free connection rated to 1500 PSI.<\/li>\n<li>\n<strong>Clean Firewall &amp; Panel Routing:<\/strong> The 90\u00b0 design lets you mount flush against any flat surface and route the hose at a right angle \u2014 cleaner than a straight bulkhead + 90\u00b0 adapter stack-up.<\/li>\n<li>\n<strong>Backed by :<\/strong> Free technical support, 30-day returns, and line-of-sight pricing. Browse our full bulkhead line for straight, 45\u00b0, and tee configurations.<\/li>\n<\/ul>\n<p><meta charset=\"utf-8\"><img decoding=\"async\" data-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0590\/5403\/0984\/files\/A_PC_-4_098985b5-4ab3-48dc-8bb9-4a1299afeb47.jpg?v=1783678845\" alt=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\"><\/p>\n<h2>Where Can You Use A 90 Degree Bulkhead Fitting?<\/h2>\n<p>This bulkhead fitting is commonly used for fuel cells, firewall pass-throughs, engine bay routing, hose extensions, and custom fluid systems. The 90 degree design helps create cleaner installations where space is limited.<\/p>\n<p><meta charset=\"utf-8\"><img decoding=\"async\" data-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0590\/5403\/0984\/files\/A_PC_-3_4947813d-3ab7-48f6-8c7d-6c144f9d9894.jpg?v=1783678790\" alt=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\"><\/p>\n<p><a href=\"\/collections\/fittings\"><img decoding=\"async\" data-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0590\/5403\/0984\/files\/evil_energy_more_products.png?v=1727234077\" alt=\" more products\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\"><\/a><\/article>\n","protected":false},"excerpt":{"rendered":"<p>Specifications Product Details Specification Details Br [&hellip;]<\/p>\n","protected":false},"featured_media":2986,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[158],"product_tag":[123,159,93,162,119,125,164,256,257],"class_list":["post-2853","product","type-product","status-publish","has-post-thumbnail","product_cat-bulkhead-fittings","product_tag-10an","product_tag-12an","product_tag-3an","product_tag-4an","product_tag-6an","product_tag-8an","product_tag-bulkhead-fittings","product_tag-fuel-hose-fitting-kit","product_tag-fuel-line-adapter-fittings","first","instock","shipping-taxable","purchasable","product-type-variable","has-default-attributes"],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.jlinlin.com\/index.php\/wp-json\/wp\/v2\/product\/2853","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jlinlin.com\/index.php\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.jlinlin.com\/index.php\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/www.jlinlin.com\/index.php\/wp-json\/wp\/v2\/comments?post=2853"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jlinlin.com\/index.php\/wp-json\/wp\/v2\/media\/2986"}],"wp:attachment":[{"href":"https:\/\/www.jlinlin.com\/index.php\/wp-json\/wp\/v2\/media?parent=2853"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.jlinlin.com\/index.php\/wp-json\/wp\/v2\/product_brand?post=2853"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.jlinlin.com\/index.php\/wp-json\/wp\/v2\/product_cat?post=2853"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.jlinlin.com\/index.php\/wp-json\/wp\/v2\/product_tag?post=2853"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}