{"product_id":"trw-psa939-power-brake-booster","title":"TRW PSA939 Power Brake Booster","description":"\u003ch2\u003eReliable Power Brake Booster for Saab 9-3 and 9-3X\u003c\/h2\u003e\u003cp\u003eThe TRW PSA939 power brake booster is designed as a standard replacement part for Saab 9-3 and 9-3X models. This vacuum booster enhances braking performance by providing consistent pedal assist, ensuring safer and more responsive stops.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eStandard replacement brake service grade\u003c\/li\u003e\n\u003cli\u003eVacuum booster type for efficient brake assist\u003c\/li\u003e\n\u003cli\u003eSteel housing with a 243 mm diameter for durability\u003c\/li\u003e\n\u003cli\u003eDual diaphragm design with 243 mm diameter for reliable operation\u003c\/li\u003e\n\u003cli\u003eIncludes gasket and neck seal for proper installation\u003c\/li\u003e\n\u003cli\u003eCompatible with Saab 9-3 and 9-3X models\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe TRW PSA939 power brake booster is engineered with a robust steel housing measuring 243 mm in diameter, providing strength and longevity under demanding conditions. Its dual diaphragm design, also 243 mm in diameter, ensures consistent vacuum assistance to the brake pedal, reducing driver effort and improving braking response. This vacuum-type booster does not include a master cylinder or mounting hardware, but it comes with essential seals and gaskets to maintain system integrity and prevent vacuum leaks. Specifically designed for Saab 9-3 and 9-3X vehicles, this booster meets standard replacement specifications to restore original braking performance.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Problem Resolution\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRestores brake pedal responsiveness in Saab 9-3 and 9-3X\u003c\/li\u003e\n\u003cli\u003eEliminates hard brake pedal issues caused by failing boosters\u003c\/li\u003e\n\u003cli\u003ePrevents vacuum leaks that reduce brake assist efficiency\u003c\/li\u003e\n\u003cli\u003eAddresses inconsistent braking force and pedal travel\u003c\/li\u003e\n\u003cli\u003eReplaces worn or damaged brake booster components\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the TRW PSA939 power brake booster, ensure the vacuum lines are free of cracks or damage to maintain proper vacuum pressure. Since mounting hardware and brake pedal rod extension are not included, retain original components or source compatible parts separately. Use the included gasket and neck seal to prevent vacuum leaks and ensure a secure fit. Proper alignment during installation is critical to avoid brake system malfunctions.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eTRW manufactures the PSA939 power brake booster to meet standard replacement quality requirements. The steel housing and dual diaphragm design provide durability and consistent performance. This part includes essential seals to maintain system integrity. Warranty details should be confirmed with the distributor or manufacturer, as coverage may vary.\u003c\/p\u003e","brand":"TRW","offers":[{"title":"Default Title","offer_id":52183020601525,"sku":"DJVT-PSA939","price":288.73,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/TW_PSA939_Fro.jpg?v=1775591867","url":"https:\/\/www.partcatalog.com\/products\/trw-psa939-power-brake-booster","provider":"PartCatalog","version":"1.0","type":"link"}