{"id":6073,"date":"2026-05-18T20:55:16","date_gmt":"2026-05-18T20:55:16","guid":{"rendered":"https:\/\/automotivebrakeandclutch.com\/index.php\/product\/mc-kit-39mk\/"},"modified":"2026-05-18T20:55:16","modified_gmt":"2026-05-18T20:55:16","slug":"mc-kit-39mk","status":"publish","type":"product","link":"https:\/\/automotivebrakeandclutch.com\/index.php\/product\/mc-kit-39mk\/","title":{"rendered":"MC KIT 39MK"},"content":{"rendered":"<p><span style=\"font-size: 25.92px; color: #333333;\">Master Cylinder Repair Kit 39MK \u2013 Fits M66177<\/span><\/p>\n<div class=\"product-page-wrapper\">\n<div class=\"product-content\">\n<div class=\"product-container\">\n<p class=\"brand-slogan\">Bexar Pro Components: Heavy-Duty Reliability for the Long Haul.<\/p>\n<p>Maintain your braking performance with this brand new **Master Cylinder Repair Kit (39MK)** from **Bexar Pro**. This kit is balanced to provide the durability required for both **heavy-duty automotive** fleets and specialized **heavy-duty equipment** applications.<\/p>\n<h2>Key Specifications<\/h2>\n<ul class=\"feature-list\">\n<li><strong>Condition:<\/strong> NEW Repair Kit<\/li>\n<li><strong>Warranty:<\/strong> No warranty on kits<\/li>\n<li><strong>Application:<\/strong> Designed for heavy-duty vocational trucks and industrial hydraulic units<\/li>\n<\/ul>\n<h2>Verified Part Number Compatibility<\/h2>\n<p>This kit is a confirmed fit for the following brake master cylinder part number:<\/p>\n<ul class=\"feature-list\" style=\"list-style-type: none; padding-left: 0;\">\n<li style=\"border-left: 4px solid #cc0000; padding-left: 10px; margin-bottom: 5px; font-family: monospace; background: #f9f9f9;\">M66177<\/li>\n<\/ul>\n<h2>Expert Installation &#038; Field Note<\/h2>\n<div class=\"important-note\">\n<p>Based on our shop experience specializing in heavy-duty brakes since 1985, always verify that the master cylinder bore is smooth and free of corrosion before installing the new 39MK components. Precise pushrod alignment is essential to ensure long-term seal life and consistent hydraulic pressure.<\/p>\n<div style=\"border: 2px solid #cc0000; padding: 10px; margin-top: 15px;\">\n<p style=\"color: #cc0000; font-weight: bold; margin: 0;\">CRITICAL: Verify Specifications<\/p>\n<p style=\"margin: 5px 0 0 0;\">Components may differ from the photo due to manufacturer updates. Always verify kit contents against your specific unit requirements before installation.<\/p>\n<\/p><\/div><\/div>\n<p><strong>SKU:<\/strong> 39MK<\/p>\n<\/p><\/div><\/div>\n<\/div>\n<div class=\"bexar-banner\" style=\"display: flex; align-items: stretch; border: 2px solid #cc0000; margin-top: 30px; height: 120px; width: 100%; max-width: 600px; overflow: hidden;\">\n<div style=\"flex: 0 0 160px; background-color: white; display: flex; align-items: center; justify-content: center; padding: 10px; border: 2px solid #cc0000;\">\n        <img decoding=\"async\" style=\"max-width: 100%; max-height: 100%; object-fit: contain;\" src=\"2026\/03\/bexar-pro-01-1.png\" alt=\"Bexar Pro Components Logo\" \/>\n    <\/div>\n<div style=\"flex: 1; background-color: #cc0000; display: flex; align-items: center; padding-left: 30px; color: white; font-family: 'Arial Black', Gadget, sans-serif; font-weight: bold; font-size: 32px; letter-spacing: 2px;\">\n        39MK\n    <\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Master Cylinder Repair Kit 39MK \u2013 Fits M66177 Bexar Pro Components: Heavy-Duty Reliability for the Long Haul. Maintain your braking performance with this brand new **Master Cylinder Repair Kit (39MK)** from **Bexar Pro**. This kit is balanced to provide the durability required for both **heavy-duty automotive** fleets and specialized **heavy-duty equipment** applications. Key Specifications Condition:<\/p>\n","protected":false},"featured_media":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":""},"product_brand":[18],"product_cat":[27,17],"product_tag":[],"class_list":{"0":"post-6073","1":"product","2":"type-product","3":"status-publish","5":"product_brand-bexar-pro-componets","6":"product_cat-brake-master-cylinder-repair-kits","7":"product_cat-view-all-products","9":"first","10":"outofstock","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>Master Cylinder Kit 39MK | Fits Part Number M66177<\/title>\n<meta name=\"description\" content=\"New master cylinder repair kit 39MK. Fits brake master cylinder part number M66177. 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