{"product_id":"valve-non-return-193695","title":"Valve Non Return for Defender (1986 – 2006) Less Anti - Lock Braking System – STC493","description":"\u003cp\u003eThe STC493 is a non-return valve used within the brake servo vacuum circuit on Land Rover Defender models equipped with non-ABS braking systems. Its function is to maintain one-directional vacuum flow between the inlet manifold and the brake servo, ensuring consistent servo assistance during braking. A faulty or degraded valve can result in a hard brake pedal, reduced braking assistance, or vacuum loss that affects overall stopping performance.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eOne-way valve design prevents vacuum backflow into the servo circuit\u003c\/li\u003e\n\u003cli\u003eDirect OEM replacement for the original fitment valve - no modification required for installation\u003c\/li\u003e\n\u003cli\u003eSpecified for non-ABS brake system configurations only - not compatible with ABS-equipped variants\u003c\/li\u003e\n\u003cli\u003eWhen replacing this valve, inspect the vacuum hose and servo diaphragm for wear or cracking, as these components are subject to the same age-related deterioration\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eVehicle Fitment\u003c\/h4\u003e\n\u003cp\u003eThis valve fits Land Rover Defender models produced from 1986 to 2006, specifically those equipped with a non-ABS (Less Anti-Lock Braking System) braking system.\u003c\/p\u003e\n\u003cp\u003eNot sure about fitment? Feel free to get in touch at \u003ca href=\"mailto:info@thomasperformance.co.uk\"\u003einfo@thomasperformance.co.uk\u003c\/a\u003e\u003c\/p\u003e","brand":"Allmakes 4x4","offers":[{"title":"Default Title","offer_id":55821800735064,"sku":"STC493","price":5.58,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/0070\/6392\/files\/STC493-600x600.jpg?v=1758871827","url":"https:\/\/thomasperformance.co.uk\/products\/valve-non-return-193695","provider":"Thomas Performance Ltd","version":"1.0","type":"link"}