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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 11/03/2026
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
Some parts are not legal for use in California or other states with similar laws / regulations
