Silicone Post MAF Hose Kit Lexus ISF V8 5.0L

The HPS Silicone Air Intake Kit Post MAF Hose (part number 18521) is engineered to replace the restrictive OEM rubber air intake hose on the 2008-2014 Lexus ISF V8 5.0L. Constructed from high-temperature, 4-ply reinforced silicone, this hose meets or exceeds OE specifications, with a maximum temperature rating of 350°F, ensuring durability and heat resistance. This direct-fit upgrade optimizes airflow, delivering dyno-proven performance gains of +4.6 whp and +7.2 ft/lbs of torque, along with improved throttle response. The HPS silicone intake kit also helps reduce heat soak, allowing the factory air box to function efficiently, and integrates with the stock fresh air scoop for optimal cooling. Beyond performance enhancements, this kit serves as a crucial replacement part to address and prevent common issues such as rough idling and vacuum leaks that arise from cracked or damaged OEM rubber hoses. Installation is designed to be straightforward, with an estimated time of 45 minutes, and requires no re-tuning or modifications, nor does it trigger a CEL light. The kit includes HPS Performance industrial-grade 100% stainless steel t-bolt clamps for secure and easy installation. This product is not CARB exempt and is unavailable for purchase or use in California. It is backed by a 2-year warranty.