{"product_id":"wheeler-9138133-01-mb4-brake-master-cylinder-filler-cap","title":"Wheeler 9138133-01 MB4 Brake Master Cylinder Filler Cap","description":"\u003ch3 data-section-id=\"17lc1ru\" data-start=\"0\" data-end=\"16\"\u003eDescription:\u003c\/h3\u003e\n\u003cp data-start=\"18\" data-end=\"575\"\u003eThe Wheeler 9138133-01 MB4 Brake Master Cylinder Filler Cap is used in towing and push back tractor hydraulic brake systems to seal and protect the brake fluid reservoir from contamination and fluid loss. Commonly installed on airport ground support equipment, towing tractors, and industrial transport vehicles where dependable brake system sealing is required for safe operation. Maintenance teams and fleet service technicians use this filler cap for replacement of damaged or missing reservoir caps during brake system maintenance and equipment repairs.\u003c\/p\u003e\n\u003ch3 data-section-id=\"5ms9th\" data-start=\"577\" data-end=\"594\"\u003eApplications:\u003c\/h3\u003e\n\u003cp data-start=\"596\" data-end=\"889\"\u003eThe Wheeler 9138133-01 MB4 filler cap is commonly used in airport push back tractors, towing vehicles, industrial transport equipment, and fleet maintenance operations where hydraulic brake systems require secure reservoir sealing and contamination protection for reliable braking performance.\u003c\/p\u003e\n\u003ch3 data-section-id=\"5hg6bl\" data-start=\"891\" data-end=\"920\"\u003eTechnical Specifications:\u003c\/h3\u003e\n\u003cp data-start=\"922\" data-end=\"1521\"\u003e• Brand: Wheeler\u003cbr data-start=\"938\" data-end=\"941\"\u003e• Part Number: 9138133-01\u003cbr data-start=\"966\" data-end=\"969\"\u003e• Model Reference: MB4\u003cbr data-start=\"991\" data-end=\"994\"\u003e• Product Type: Brake Master Cylinder Filler Cap\u003cbr data-start=\"1042\" data-end=\"1045\"\u003e• Application: Hydraulic brake reservoir sealing\u003cbr data-start=\"1093\" data-end=\"1096\"\u003e• Compatible Equipment: Towing and push back tractors\u003cbr data-start=\"1149\" data-end=\"1152\"\u003e• Function: Prevents brake fluid contamination and leakage\u003cbr data-start=\"1210\" data-end=\"1213\"\u003e• Installation Type: Threaded or press-fit reservoir cap\u003cbr data-start=\"1269\" data-end=\"1272\"\u003e• Usage Environment: Industrial and airport ground support equipment\u003cbr data-start=\"1340\" data-end=\"1343\"\u003e• Construction: Industrial-grade cap assembly\u003cbr data-start=\"1388\" data-end=\"1391\"\u003e• Designed For: Brake system maintenance and replacement\u003cbr data-start=\"1447\" data-end=\"1450\"\u003e• Typical Industries: Ground support, transportation, fleet maintenance\u003c\/p\u003e\n\u003ch3 data-section-id=\"1cz0398\" data-start=\"1523\" data-end=\"1547\"\u003eCommon Replacements:\u003c\/h3\u003e\n\u003cp data-start=\"1549\" data-end=\"1655\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e• Grove Brake Reservoir Cap\u003cbr data-start=\"1576\" data-end=\"1579\"\u003e• TLD Brake Master Cylinder Cap\u003cbr data-start=\"1610\" data-end=\"1613\"\u003e• Tug Technologies Hydraulic Reservoir Cap\u003c\/p\u003e","brand":"WHEELER","offers":[{"title":"New Surplus No Box","offer_id":51732732805422,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_06d3895f-b0c8-4a09-8733-d5546ebb35ff.jpg?v=1770600336","url":"https:\/\/plgautomation.com\/products\/wheeler-9138133-01-mb4-brake-master-cylinder-filler-cap","provider":"PLG Automation ","version":"1.0","type":"link"}