{"id":5816,"date":"2026-05-18T20:13:54","date_gmt":"2026-05-18T20:13:54","guid":{"rendered":"https:\/\/automotivebrakeandclutch.com\/?post_type=product&#038;p=5816"},"modified":"2026-05-18T20:50:02","modified_gmt":"2026-05-18T20:50:02","slug":"1990-1993-chevy-astro-gmc-safari-hydroboost-brake-booster-bp7251","status":"publish","type":"product","link":"https:\/\/automotivebrakeandclutch.com\/index.php\/product\/1990-1993-chevy-astro-gmc-safari-hydroboost-brake-booster-bp7251\/","title":{"rendered":"1990-1993 Chevy Astro &#038; GMC Safari Hydroboost Brake Booster | BP7251"},"content":{"rendered":"<p><script src=\"https:\/\/cdn.tailwindcss.com\"><\/script><\/p>\n<div style=\"display: none;\" aria-hidden=\"true\">Interchange: 52-7251, NBB 527251, Cardone 52-7251, GM 18018261<\/div>\n<div class=\"max-w-5xl mx-auto p-4 sm:p-8 text-gray-800 font-sans text-left\">\n<div class=\"space-y-8 text-left\">\n<div class=\"pb-4 border-b-4 border-[#DC2626] text-left\">\n<h1 class=\"text-3xl sm:text-4xl font-extrabold text-gray-900 leading-tight uppercase text-left\">Bexar Pro Hydroboost | 1990-1993 Chevy Astro &amp; GMC Safari<\/h1>\n<div class=\"flex flex-col sm:flex-row justify-between items-start sm:items-center mt-4 gap-2 text-left\">\n<p class=\"text-xl font-bold text-[#DC2626]\">SKU: BP7251<\/p>\n<div class=\"flex gap-2 text-left\"><span class=\"bg-[#1F2937] text-white text-xs font-bold px-3 py-1 rounded uppercase tracking-widest\">Bexar Pro Components Grade<\/span><br \/>\n<span class=\"bg-amber-100 text-amber-800 text-xs font-bold px-3 py-1 rounded uppercase tracking-widest\">Special Order: Ships in 3-5 Business Days<\/span><\/div>\n<\/div>\n<\/div>\n<p class=\"text-gray-700 font-semibold border-l-4 border-[#DC2626] pl-4 italic text-left\">&#8220;Precision hydraulic restoration for mid-size van fleets, providing maximum assist in compact engine bays.&#8221;<\/p>\n<div class=\"prose max-w-none text-gray-700 text-lg leading-relaxed text-left\">Restore original braking confidence to your GM mid-size van with the **Bexar Pro Hydroboost**. Specifically engineered for the **1990-1993 Chevrolet Astro** and **GMC Safari**, this unit is designed to handle the high-pressure demands of heavily loaded passenger and cargo vans. Utilizing the power steering pump for hydraulic assist, it offers significantly more stopping power than traditional vacuum systems. Every unit is reverse-engineered to correct design weaknesses, featuring 100% O.E. quality internal components for reliable performance.<\/div>\n<div class=\"overflow-hidden rounded-xl border border-gray-200 shadow-lg text-left\">\n<table class=\"w-full text-sm text-left\">\n<thead class=\"bg-[#1F2937] text-white uppercase text-xs tracking-wider\">\n<tr>\n<th class=\"px-6 py-4 text-left\">Specification<\/th>\n<th class=\"px-6 py-4 text-left\">Detail<\/th>\n<\/tr>\n<\/thead>\n<tbody class=\"divide-y divide-gray-200\">\n<tr class=\"bg-white\">\n<td class=\"px-6 py-4 font-bold text-left\">Booster Type<\/td>\n<td class=\"px-6 py-4 text-left\">Hydraulic Assist<\/td>\n<\/tr>\n<tr class=\"bg-gray-50\">\n<td class=\"px-6 py-4 font-bold text-left\">Housing Diameter<\/td>\n<td class=\"px-6 py-4 text-left\">3.72 Inches<\/td>\n<\/tr>\n<tr class=\"bg-white\">\n<td class=\"px-6 py-4 font-bold text-left\">Housing Material<\/td>\n<td class=\"px-6 py-4 text-left\">Durable Cast Iron<\/td>\n<\/tr>\n<tr class=\"bg-gray-50\">\n<td class=\"px-6 py-4 font-bold text-left\">Stud Thread Size<\/td>\n<td class=\"px-6 py-4 text-left\">10 x 1.25mm<\/td>\n<\/tr>\n<tr class=\"bg-white\">\n<td class=\"px-6 py-4 font-bold text-left\">Internal Components<\/td>\n<td class=\"px-6 py-4 text-left\">100% New Seals, Diaphragms &amp; Valves<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div class=\"rounded-xl border-t-4 border-[#DC2626] bg-white p-6 shadow-md text-left\">\n<h2 class=\"text-xl font-bold text-gray-900 mb-4 uppercase tracking-wide flex items-center text-left\"><span class=\"mr-2\">\ud83d\udee0\ufe0f<\/span> Professional Installation &amp; Field Note<\/h2>\n<div class=\"space-y-4 text-sm text-gray-700 text-left\">\n<p class=\"italic font-medium text-left\">Based on our shop experience specializing in heavy-duty brakes since 1985:<\/p>\n<ul class=\"list-disc list-inside space-y-2 text-left\">\n<li><strong>Van Chassis Vibration:<\/strong> Astro and Safari engine bays are tight and prone to heat soak. Our exclusive rust-prohibitive finishing process protects this cast iron unit from environmental corrosion.<\/li>\n<li><strong>Fluid Contamination:<\/strong> These hydraulic systems are shared with the power steering. Always perform a complete flush with fresh, high-quality fluid. Sediment from a worn pump is the primary cause of hydroboost seal failure.<\/li>\n<li><strong>Pedal Return Issues:<\/strong> If your brake pedal is slow to return, check for air in the hydraulic lines. Follow our guide below for the specific bleeding procedure required for these GM van platforms.<\/li>\n<\/ul>\n<div class=\"mt-6 pt-4 border-t border-gray-100 text-left\"><a class=\"inline-block bg-[#1F2937] text-white px-6 py-3 rounded-lg font-bold uppercase tracking-widest text-xs hover:bg-gray-700 transition\" href=\"https:\/\/automotivebrakeandclutch.com\/brake-hydroboost-installation-troubleshooting-guide\/\"><br \/>\nInstallation &amp; Troubleshooting Guide \u2192<br \/>\n<\/a><\/div>\n<\/div>\n<\/div>\n<div class=\"bg-gray-50 rounded-2xl p-6 border border-gray-200 text-left\">\n<div class=\"grid grid-cols-1 md:grid-cols-2 gap-8 items-center text-left md:text-left\">\n<div>\n<h3 class=\"font-bold text-gray-900 uppercase text-left\">Special Order Item<\/h3>\n<p class=\"text-sm text-gray-600 text-left\">Flagged for specialty van fleet fulfillment. Please allow 3-5 business days for expert processing and shipping.<\/p>\n<\/div>\n<div>\n<p class=\"text-sm text-gray-600 text-left\">\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<footer class=\"bg-gradient-to-br from-[#1f2937] to-[#111827] w-full py-12 mt-12 shadow-2xl text-center\">\n<div class=\"max-w-7xl mx-auto px-4\">\n<div class=\"bg-white inline-block p-4 rounded mb-6 shadow-xl border-4 border-[#DC2626]\"><img decoding=\"async\" class=\"h-12\" src=\"2026\/03\/bexar-pro-01-1.png\" alt=\"Bexar Pro Components\" \/><\/div>\n<h3 class=\"text-2xl font-extrabold uppercase text-white tracking-widest\">Hydroboost BP7251<\/h3>\n<p class=\"mt-3 text-white text-opacity-90 font-medium italic tracking-wide text-sm text-center\">Heavy-Duty Braking Solutions for Astro &amp; Safari Fleets<\/p>\n<p class=\"text-white text-xs mt-4 opacity-70 uppercase tracking-widest\">Specialized Shop Support Since 1985<\/p>\n<\/div>\n<\/footer>\n","protected":false},"excerpt":{"rendered":"<p>Interchange: 52-7251, NBB 527251, Cardone 52-7251, GM 18018261 Bexar Pro Hydroboost | 1990-1993 Chevy Astro &amp; GMC Safari SKU: BP7251 Bexar Pro Components Grade Special Order: Ships in 3-5 Business Days &#8220;Precision hydraulic restoration for mid-size van fleets, providing maximum assist in compact engine bays.&#8221; Restore original braking confidence to your GM mid-size van with<\/p>\n","protected":false},"featured_media":5838,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":""},"product_brand":[18],"product_cat":[41],"product_tag":[],"class_list":{"0":"post-5816","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-bexar-pro-componets","7":"product_cat-hydroboost-brake-boosters","9":"first","10":"instock","11":"taxable","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Chevy Astro GMC Safari Hydroboost | 1990-1993 | BP7251 | Bexar Pro<\/title>\n<meta name=\"description\" content=\"Premium Bexar Pro Hydroboost for 1990-1993 Chevrolet Astro and GMC Safari vans. 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