{"id":6069,"date":"2026-05-18T20:55:16","date_gmt":"2026-05-18T20:55:16","guid":{"rendered":"https:\/\/automotivebrakeandclutch.com\/index.php\/product\/mc-kit-376mk\/"},"modified":"2026-05-18T20:55:16","modified_gmt":"2026-05-18T20:55:16","slug":"mc-kit-376mk","status":"publish","type":"product","link":"https:\/\/automotivebrakeandclutch.com\/index.php\/product\/mc-kit-376mk\/","title":{"rendered":"MC KIT 376MK"},"content":{"rendered":"<p><span style=\"font-size: 25.92px; color: #333333;\">Master Cylinder Repair Kit 376MK \u2013 Fits M3606330 \/ CM3283971<\/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>Ensure maximum hydraulic integrity with this brand new **Master Cylinder Repair Kit (376MK)** from **Bexar Pro**. This rebuild package is precision-engineered to meet the rigorous demands of **heavy-duty automotive** fleets and **industrial equipment**, providing a balanced solution for both highway vocational vehicles and stationary hydraulic units.<\/p>\n<h2>Key Specifications<\/h2>\n<ul class=\"feature-list\">\n<li><strong>Condition:<\/strong> NEW Repair Components<\/li>\n<li><strong>Warranty:<\/strong> No warranty on internal replacement parts<\/li>\n<li><strong>Application:<\/strong> Suitable for medium-duty trucks and heavy-duty hydraulic units<\/li>\n<li><strong>Installation Guide:<\/strong> <a href=\"https:\/\/automotivebrakeandclutch.com\/master-cylinder-replacement\/\" style=\"color: #cc0000; font-weight: bold;\">Master Cylinder Replacement Guide<\/a><\/li>\n<\/ul>\n<h2>Verified Part Number Compatibility<\/h2>\n<p>This kit is a confirmed fit for the following master cylinder casting and part numbers:<\/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;\">M3606330<\/li>\n<li style=\"border-left: 4px solid #cc0000; padding-left: 10px; margin-bottom: 5px; font-family: monospace; background: #f9f9f9;\">CM3283971<\/li>\n<\/ul>\n<h2>Expert Installation &#038; Field Note<\/h2>\n<div class=\"important-note\">\n<p>Drawing from our shop experience specializing in heavy-duty brakes since 1985, the most common reason for a master cylinder failing shortly after a rebuild is internal damage caused by over-extending the internal cup during the bench bleeding process. To ensure long-term reliability, always utilize short, controlled strokes. Additionally, verify that the master cylinder bore is completely free of pitting or vertical scoring before installing the 376MK components. Proper pushrod alignment is critical to prevent premature seal wear and maintain a consistent pedal feel.<\/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; margin-bottom: 8px;\">Components may differ from the photo due to manufacturer updates. Always verify all contents against your specific unit requirements before assembly.<\/p>\n<p style=\"margin: 0; color: #cc0000; font-weight: bold;\">\u26a0\ufe0f CLUTCH WARNING: For clutch master cylinder applications, do NOT install the check valve if there was not one already installed in the unit.<\/p>\n<\/p><\/div><\/div>\n<p><strong>SKU:<\/strong> 376MK<\/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        376MK\n    <\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Master Cylinder Repair Kit 376MK \u2013 Fits M3606330 \/ CM3283971 Bexar Pro Components: Heavy-Duty Reliability for the Long Haul. Ensure maximum hydraulic integrity with this brand new **Master Cylinder Repair Kit (376MK)** from **Bexar Pro**. This rebuild package is precision-engineered to meet the rigorous demands of **heavy-duty automotive** fleets and **industrial equipment**, providing a balanced<\/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-6069","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":"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>Master Cylinder Repair Kit 376MK | Fits M3606330 CM3283971 | Bexar Pro<\/title>\n<meta name=\"description\" content=\"New master cylinder rebuild kit 376MK. 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