{"product_id":"subaru-oem-bypass-valve-hose-04-05-sti-99071ac541","title":"Subaru OEM Bypass Valve Hose 2004-2005 STI","description":"\u003ch3\u003eSubaru OEM Bypass Valve Hose 2004-2005 STI | OEM Fitment \u0026amp; Reliability | Replacement Part\u003c\/h3\u003e\n\n\u003ch4\u003eOverview\u003c\/h4\u003e\n\u003cp\u003eThe Subaru OEM Bypass Valve Hose for the 2004-2005 STI is a genuine replacement component designed to ensure your turbocharged engine maintains optimal boost control and throttle response. Built specifically for Subaru enthusiasts who prioritize factory reliability and precise fitment, this hose plays a critical role in the turbo system’s operation. Whether you're restoring your vehicle or replacing a worn or damaged hose, this OEM part guarantees seamless integration with your existing setup, helping to preserve the performance and longevity of your turbocharged engine.\u003c\/p\u003e\n\u003cp\u003eManufactured to Subaru’s strict standards, this bypass valve hose embodies the brand’s commitment to quality and durability. Crafted from high-grade materials, it withstands extreme temperatures and pressure cycles common in forced induction applications. Subaru’s engineering approach ensures that each component, including this hose, delivers consistent performance under demanding driving conditions. By choosing genuine OEM parts, you maintain the integrity of your vehicle’s factory systems, avoiding potential issues caused by aftermarket substitutes.\u003c\/p\u003e\n\u003cp\u003eFor Subaru owners who demand reliability and consistent turbo performance, this bypass valve hose is an essential upgrade or replacement. It helps prevent boost leaks and maintains proper pressure regulation, which is vital for peak engine efficiency and responsiveness. Restoring your vehicle’s boost management system with OEM parts ensures your WRX STI continues to deliver the driving experience you expect—smooth, responsive, and dependable.\u003c\/p\u003e\n\n\u003ch4\u003eFeatures \u0026amp; Specifications\u003c\/h4\u003e\n\u003cp\u003eThis Subaru OEM Bypass Valve Hose is engineered for the Subaru WRX STI (2004-2005) and features a direct OEM replacement design. Constructed from durable high-quality rubber, it provides excellent resistance to heat, pressure, and aging, ensuring long-lasting performance for spirited driving and daily use.\u003c\/p\u003e\n\u003cul style=\"list-style:none;padding:0;margin:0;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Subaru OEM\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProduct:\u003c\/strong\u003e Bypass Valve Hose\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e Not specified in the description\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Subaru WRX STI (2004-2005)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e High-quality rubber\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Natural rubber finish\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Molded OEM design\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Japan\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eCategory-Specific Specs\u003c\/h5\u003e\n\u003cul style=\"list-style:none;padding:0;margin:0;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e Not specified\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eService Interval:\u003c\/strong\u003e Replace as needed during maintenance or when damaged\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1 piece per package\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eKey Benefits\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOEM Fitment:\u003c\/strong\u003e Ensures perfect compatibility with your 2004-2005 STI, maintaining factory performance and reliability.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Crafted from high-quality materials that resist heat, pressure, and aging, providing long-lasting service life.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBoost Control:\u003c\/strong\u003e Restores proper boost pressure regulation, preventing leaks that can compromise turbo performance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEngine Reliability:\u003c\/strong\u003e Helps maintain consistent throttle response and turbo efficiency, supporting your vehicle’s overall engine health.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEase of Installation:\u003c\/strong\u003e Designed as a direct replacement, making installation straightforward for DIY enthusiasts or professional mechanics.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eWhat's Included\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1× Subaru OEM Bypass Valve Hose for 2004-2005 STI\u003c\/li\u003e\n  \u003cli\u003eInstallation instructions (if applicable)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eInstallation \u0026amp; Compatibility\u003c\/h4\u003e\n\u003cp\u003eReplacing the bypass valve hose is a straightforward process suitable for DIY enthusiasts with basic mechanical skills. It requires minimal tools—typically just pliers and screwdrivers—and can be completed in under an hour. Proper inspection of surrounding hoses and connections is recommended to ensure optimal performance. This OEM hose is a direct fit for the 2004-2005 Subaru WRX STI, ensuring a perfect seal and fitment. For best results, consider replacing other related hoses or seals during your maintenance interval. Tuning is generally not required for this component, but maintaining proper boost pressure and system integrity is essential for peak turbo performance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProfessional Installation:\u003c\/strong\u003e Recommended for those unfamiliar with turbo system components.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Confirm your vehicle is a 2004-2005 Subaru WRX STI to ensure proper fitment.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModifications Required:\u003c\/strong\u003e None; direct OEM replacement.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Subaru OEM","offers":[{"title":"Default Title","offer_id":45722210173103,"sku":"99071AC541","price":42.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0587\/3598\/4815\/files\/subaru-oem-bypass-valve-hose-2004-2005-sti-99071ac541-3439453.jpg?v=1762298316","url":"https:\/\/subimods.com\/products\/subaru-oem-bypass-valve-hose-04-05-sti-99071ac541","provider":"Subimods.com","version":"1.0","type":"link"}