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Vehicle Info NeededHUSHMATPART NUMBER: 774-617422
Firewall Sound Deadening and Thermal Insulation Kit for 1961-1964 Cadillac Series 75 Fleetwood
$17252
Ships on Sep 04, 2026
Lowest Price GuaranteeFirewall Sound Deadening and Thermal Insulation KitFits 1961-1964 Cadillac Series 75 Fleetwood Covers Firewall Butyl Rubber Compound, R-7 Rating Black/Silver Backing Sold as a Kit
Block engine and exhaust heat and noise from the cabin of a 1961-1964 Cadillac Series 75 Fleetwood with a custom-measured HushMat Ultra firewall kit that covers firewall.
HushMat 617422 Firewall Sound Deadening Kit Features:
- Covers Firewall
- Butyl Rubber Compound construction with an R-7 thermal insulation rating
- Black/Silver finish
- Withstands bakes up to 240 deg C (464 deg F) without sagging or losing adhesion
- Self-adhesive peel-and-stick application, no separate tools or adhesive required
- Sold as a complete kit
Part TypeThermal Acoustic Insulation
BrandHUSHMAT
Part CategoryPerformance Parts
R-Value7
Cold Flexibility-30 deg C without Cracking
ColorBlack Polymer / Silver Backing
QuantitySold as a Kit
MaterialButyl Rubber Compound
CoverageFirewall
Hardness6.5-9.0 mm (ASTM D-5)
Thickness1.5 mm
ReusableNo
Cutting RequiredYes
Temperature Resistance464 deg F (1 hr Bake, No Deformation)
FlammabilitySelf-Extinguishing per FMVSS 302
Additional Adhesive RequiredNo
Shelf Life12 Months Minimum, Stored Below 40 deg C
SafetyNot Considered a Hazardous Material
Part FitmentDirect Fit
Specific Gravity1.47 (0.47 lb per sq ft)
Package Qty1
No Questions
No Reviews
Some parts are not legal for use in California or other states with similar laws / regulations
