{"product_id":"4-1-stainless-steel-headers","title":"4-1 Stainless Steel Headers","description":"The PPE Engineering Lexus SC400 headers are a performance-oriented exhaust component designed to improve engine breathing and power output. These headers feature a 4-1 design with 1 5\/8\" primary runners that smoothly transition into a 2.5\" collector outlet, all constructed from durable 100% 304 stainless steel for longevity and corrosion resistance.\n\nEngineered to provide significant performance improvements, these headers are claimed to deliver 18-20 wheel horsepower and over 20 ft-lb of torque. The installation is designed as a bolt-on, and importantly, does not require O2 sensor extensions, simplifying the process. New outlet gaskets are included to ensure a proper seal.\n\nIt is crucial to note that these headers are not a direct fit to the stock catalytic converters. The design is longer than the factory manifolds, and installation necessitates minor fabrication. Users will need to modify their stock catalytic converters, opt for high-flow catalytic converters, or create custom test pipes to properly integrate these headers into the exhaust system. Matching flanges for exhaust modification are available separately.\n\nFor those seeking to reduce underhood temperatures and maintain aesthetic appeal, an optional ceramic coating is available. This coating not only helps dissipate heat but also preserves the headers' appearance over time.","brand":"PPE Engineering","offers":[{"title":"Default Title","offer_id":52663322050872,"sku":"1140004-SS","price":1595.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687527863.jpg?v=1784325935","url":"https:\/\/store.motormia.co\/products\/4-1-stainless-steel-headers","provider":"MOTORMIA","version":"1.0","type":"link"}