55-59 GM Truck High Tunn el Floor Insulation Kit

The 55-59 GM Truck High Tunnel Floor Insulation Kit is designed for classic truck restoration enthusiasts and mechanics focused on improving thermal and acoustic management in the cab floor tunnel area. This kit addresses the common issue of deteriorated or absent factory insulation in vintage GM trucks, which can lead to excessive heat transfer and road noise.

Constructed from professional-grade barrier material, this insulation kit effectively absorbs road and engine vibration noise while providing a thermal break to keep cabin temperatures comfortable. It is engineered to cover the high tunnel section comprehensively, ensuring a seamless fit that minimizes the need for additional trimming or modification.

Ideal for owners performing frame-off restorations, engine upgrades, or modern drivetrain conversions, this kit is particularly beneficial for those where original insulation is absent or compromised. Its design and material composition enhance driver comfort during long drives while protecting modern upholstery and wiring from underhood heat.