DEI Vapor Block Sleeve - 3/8in x 36in

DEI Vapor Block is a fuel-line sleeve that prevents vapor lock by keeping fuel below its boiling point, eliminating the rough idle and hard starts caused by heat soak. Made from glass fiber and polyester laminated to an aluminum outer layer, it installs without disconnecting the line - just wrap it around, peel the adhesive liner, and press the flap closed. Easy to cut to size. Do not apply directly to exhaust components.

Specifications

Shipping

• In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
• Standard, expedited, and overnight options at checkout.
• Oversized items ship by freight and take longer.
• Backordered items ship as soon as stock lands — contact us for lead times.
• International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

• 30-day returns on new, uninstalled items in original packaging with all hardware.
• Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
• Installed or used parts can’t be returned — confirm fitment before you install.
• Special orders and custom items are final sale.
• Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy