PPE 578013565 3.5 inch x 50ft Heat Sleeve | Universal

Features:

• Covers up to 50 feet of components
• Withstands 500°F continuous heat exposure
• Handles heat spikes up to 2200°F
• Made from silicone-coated fiberglass material
• Fits 3.5-inch diameter components
• Ideal for full harness and hose protection
• Shields wiring, fuel, and vacuum lines
• Great for use near turbos and exhausts
• Flexible and easy to install in tight areas
• Can be cut for custom applications
• Helps reduce heat-related component wear
• Suitable for high-performance engine bays

Cover More Ground And Keep The Heat Away

If your build needs serious heat protection across a lot of surface area, this sleeve is the one to reach for. The PPE 3.5-inch x 50-foot Heat Sleeve gives you enough length to handle everything from long fuel runs to clustered wiring harnesses and bulky coolant lines. Whether you're wrenching on a boosted street car, a diesel tow rig, or a track-focused setup, heat management is one of those things that makes all the difference in long-term reliability. This sleeve wraps easily around sensitive components and shields them from the extreme temperatures common in performance engine bays. It’s got that rugged, silicone-coated fiberglass construction that shrugs off constant high temps and even brief surges without breaking a sweat. What really sets this apart is the extra length, it lets you get the job done in one go instead of piecing together short segments. The result is a cleaner install that performs better and looks more finished under the hood.

Designed For Builds That Demand Wide Coverage

The PPE 578013565 Heat Sleeve offers a universal, high-capacity solution for thermal insulation in demanding automotive environments. Built from tightly woven fiberglass and sealed with a high-temp silicone exterior, this sleeve is rated for continuous exposure to 500°F and can handle thermal spikes up to 2200°F. The 3.5-inch diameter allows it to accommodate larger diameter hoses, bulky wire bundles, or grouped components without restriction. At 50 feet long, it’s ideal for extended routing needs such as full-length fuel rails, intake tubing, or turbo-related plumbing that runs through heat-soaked areas. Its flexible design allows the sleeve to bend around corners and hug uneven paths while maintaining a strong barrier against radiant heat. It can be trimmed to fit, layered for added protection, or secured in place using clamps or ties based on your setup. This sleeve delivers the kind of industrial-grade insulation that supports both performance and durability in high-horsepower builds.

Fits: Universal

Notes:

• Provides 50 feet of sleeve for large coverage needs
• Best suited for shielding multiple components in one job
• Withstands up to 500°F continuously and 2200°F short-term
• Made from woven fiberglass with a silicone coating
• Designed for use near high-heat engine components
• 3.5-inch diameter fits larger hoses and wire bundles
• Ideal for turbocharged, supercharged, or high-output builds
• Can be trimmed to custom lengths for precise installations
• Flexible enough to fit around curves and tight spots
• Not intended for direct contact with moving parts
• Improves safety and reliability in high-performance setups
• Universal design fits a wide range of applications