Flatline Barriers High Tunnel Floor Insulation Kit — Fits 1963-1966 GM Truck

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SKU: HMTJ_TABT4027
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Sale price$188.95 Regular price$230.99
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About Flatline Barriers

Flatline Barriers engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Flatline Barriers lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Ultimate Thermal and Acoustic Control for Your 1963-1966 GM Truck

Transform your classic pickup's interior comfort with the Flatline Barriers High Tunnel Floor Insulation Kit. Specifically engineered for 1963-1966 GM trucks equipped with high tunnel transmissions, this pre-cut kit provides a precision fit that eliminates the guesswork of custom trimming. By combining advanced aluminum-faced foam technology, this barrier effectively blocks radiant heat and dampens road noise, ensuring a quieter, cooler cabin during every drive.

Key Features and Benefits

  • Precision Pre-Cut: Designed specifically for the high tunnel floor configuration of 63-66 GM trucks.
  • Dual-Layer Protection: High-performance foam core with a durable aluminum heat shield.
  • Thermal Efficiency: Significantly reduces cabin temperatures by blocking engine and exhaust heat.
  • Noise Reduction: Absorbs vibrations and road drone for a premium driving experience.
  • Easy Installation: Lightweight materials that are easy to handle and install under your carpet or floor mats.

Whether you are restoring a classic workhorse or building a custom cruiser, managing cabin climate is essential. This insulation kit acts as a robust barrier against the elements, protecting your interior components and enhancing driver comfort. Don't let engine heat and road noise ruin your experience; invest in the best sound deadening solutions available. Experience the difference in quality and performance with this professional-grade kit from GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Flatline Barriers

Flatline Barriers engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Flatline Barriers lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Ultimate Thermal and Acoustic Control for Your 1963-1966 GM Truck

Transform your classic pickup's interior comfort with the Flatline Barriers High Tunnel Floor Insulation Kit. Specifically engineered for 1963-1966 GM trucks equipped with high tunnel transmissions, this pre-cut kit provides a precision fit that eliminates the guesswork of custom trimming. By combining advanced aluminum-faced foam technology, this barrier effectively blocks radiant heat and dampens road noise, ensuring a quieter, cooler cabin during every drive.

Key Features and Benefits

  • Precision Pre-Cut: Designed specifically for the high tunnel floor configuration of 63-66 GM trucks.
  • Dual-Layer Protection: High-performance foam core with a durable aluminum heat shield.
  • Thermal Efficiency: Significantly reduces cabin temperatures by blocking engine and exhaust heat.
  • Noise Reduction: Absorbs vibrations and road drone for a premium driving experience.
  • Easy Installation: Lightweight materials that are easy to handle and install under your carpet or floor mats.

Whether you are restoring a classic workhorse or building a custom cruiser, managing cabin climate is essential. This insulation kit acts as a robust barrier against the elements, protecting your interior components and enhancing driver comfort. Don't let engine heat and road noise ruin your experience; invest in the best sound deadening solutions available. Experience the difference in quality and performance with this professional-grade kit from GGCRACING.

Product Details

Product Description

About Flatline Barriers

Flatline Barriers engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Flatline Barriers lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Ultimate Thermal and Acoustic Control for Your 1963-1966 GM Truck

Transform your classic pickup's interior comfort with the Flatline Barriers High Tunnel Floor Insulation Kit. Specifically engineered for 1963-1966 GM trucks equipped with high tunnel transmissions, this pre-cut kit provides a precision fit that eliminates the guesswork of custom trimming. By combining advanced aluminum-faced foam technology, this barrier effectively blocks radiant heat and dampens road noise, ensuring a quieter, cooler cabin during every drive.

Key Features and Benefits

  • Precision Pre-Cut: Designed specifically for the high tunnel floor configuration of 63-66 GM trucks.
  • Dual-Layer Protection: High-performance foam core with a durable aluminum heat shield.
  • Thermal Efficiency: Significantly reduces cabin temperatures by blocking engine and exhaust heat.
  • Noise Reduction: Absorbs vibrations and road drone for a premium driving experience.
  • Easy Installation: Lightweight materials that are easy to handle and install under your carpet or floor mats.

Whether you are restoring a classic workhorse or building a custom cruiser, managing cabin climate is essential. This insulation kit acts as a robust barrier against the elements, protecting your interior components and enhancing driver comfort. Don't let engine heat and road noise ruin your experience; invest in the best sound deadening solutions available. Experience the difference in quality and performance with this professional-grade kit from GGCRACING.

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