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Vehicle Info NeededHUSHMATPART NUMBER: 774-584554
Trunk Sound Deadening and Thermal Insulation Kit for 1977-1986 BMW Models
$32391
Ships on 11/03/2026
Lowest Price GuaranteeTrunk Sound Deadening and Thermal Insulation KitFits 1977-1986 BMW Models See Fitment Tab for All Applications Covers Firewall, Floor, Doors, Roof, Rear Wall Butyl Rubber Compound, R-7 Rating Black/Silver Backing Sold as a Kit
Quiet down road noise and heat in the trunk of the BMW lineup with a custom-measured HushMat Ultra kit that treats firewall, floor, doors, roof, rear wall.
HushMat 584554 Trunk Sound Deadening Kit Features:
- Covers Firewall, Floor, Doors, Roof, Rear Wall
- 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
- Fits the following applications:
- 1977-1978 BMW 630CSi
- 1978-1984 BMW 633CSi
- 1985-1986 BMW 635CSi
Part TypeThermal Acoustic Insulation
BrandHUSHMAT
Package Width12 in
Package Length23 in
Part CategoryPerformance Parts
R-Value7
Cold Flexibility-30 deg C without Cracking
ColorBlack Polymer / Silver Backing
QuantitySold as a Kit
MaterialButyl Rubber Compound
CoverageFirewall, Floor, Doors, Roof, Rear Wall
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
