{"product_id":"mpa-electrical-b1139-power-brake-booster","title":"MPA Electrical B1139 Power Brake Booster","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eThis remanufactured vacuum power brake booster is built for direct brake assist replacement where the master cylinder is not included. MPA Electrical part B1139 is engineered to deliver strong vacuum-assisted braking with reduced pedal effort, and it is tested at the end of production for consistent output.\u003c\/p\u003e\u003cp\u003eCompatible with Dodge Ram 1500 Van, Ram 2500 Van, Ram 3500 Van, B1500, B2500, and B3500 applications listed below, this booster supports reliable pressure transfer in standard replacement service. The B1139 brake booster is a practical choice for restoring braking feel on Dodge Ram van and B-series truck platforms.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eVacuum booster design for power-assisted braking\u003c\/li\u003e\n\u003cli\u003eRemanufactured standard replacement unit\u003c\/li\u003e\n\u003cli\u003eMetal housing construction\u003c\/li\u003e\n\u003cli\u003e10.95 in. diaphragm diameter\u003c\/li\u003e\n\u003cli\u003e3\/8-16 master cylinder stud thread size\u003c\/li\u003e\n\u003cli\u003eTwo mounting studs for installation\u003c\/li\u003e\n\u003cli\u003eMaster cylinder, gasket, seal, and pedal rod extension not included\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eMPA Electrical B1139 is a remanufactured power brake booster engineered for vehicles that use a vacuum-assisted brake system. The unit is built with treated replacement components to support vacuum sealing and pressure transfer, while 100% end-of-line testing helps verify performance before shipment. As a brake booster for Dodge Ram 1500 Van, Ram 2500 Van, Ram 3500 Van, B1500, B2500, and B3500 fitments, it is suited to restoring brake assist when the original booster has weakened or failed.\u003c\/p\u003e\u003cp\u003eThis part cross-references Mopar (e.g., 4897211AB, 5101892AA) for the same application. Part number B1139 should be matched to the vehicle’s brake system configuration before installation.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Fix\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHard brake pedal feel\u003c\/li\u003e\n\u003cli\u003eReduced brake assist\u003c\/li\u003e\n\u003cli\u003eVacuum seal loss in the booster\u003c\/li\u003e\n\u003cli\u003eWeak or inconsistent pedal response\u003c\/li\u003e\n\u003cli\u003eBrake system performance loss from a worn booster\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eVerify master cylinder compatibility, stud thread size, and mounting layout before installation. This booster does not include a master cylinder, gasket, seal, mounting bracket, or brake pedal rod extension. Confirm the vehicle’s brake system condition and vacuum supply so the replacement booster can operate correctly.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eMPA Electrical subjects each unit to 100% end-of-line testing using proprietary equipment. Part number B1139 is remanufactured to standard replacement specifications for consistent brake assist performance.\u003c\/p\u003e","brand":"MPA Electrical","offers":[{"title":"Default Title","offer_id":53540932518069,"sku":"FQTW-B1139","price":180.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/MV_B1139_Fro.jpg?v=1792216678","url":"https:\/\/www.partcatalog.com\/products\/mpa-electrical-b1139-power-brake-booster","provider":"PartCatalog","version":"1.0","type":"link"}