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Sound insulation for BMW 3 Series E21 320i (1982)

This Sound insulation technical drawing provides a detailed breakdown of the assembly for the 3 Series E21 320i. It includes part names, part numbers and all associated mounting hardware for vehicles produced between 1982.

Sound insulation
No. Description Supp. Qty  From   Up To  Part Number Price Notes
01 Heat insulation tunnel bottom 1 09/1977 51481856988 $58.76 Shop at ECS Tuning
For vehicles with
California version

=Yes
02 Sound insulation 1 51481856987 ENDED Shop at ECS Tuning
03 Sound insulating dash panel engine room 1 09/1977 51481852059 $96.34 Shop at ECS Tuning
For vehicles with
California version

=No
03 Sound insulating dash panel engine room 1 09/1977 51481852059 $96.34 Shop at ECS Tuning
03 Sound insulating dash panel engine room 1 09/1977 51481855611 ENDED Shop at ECS Tuning
04 Sound insulating dash panel 1 51481866199 $135.03 ENDED Shop at ECS Tuning
05 Front floor panel sound insulation 1 09/1978 51481869789 ENDED Shop at ECS Tuning
06 Sound insulation floor rear 1 51481849727 $87.91 ENDED Shop at ECS Tuning
07 Sound insulating rear window frame left 1 51481826865 ENDED Shop at ECS Tuning
07 Sound insulating rear window frame right 1 51481826866 ENDED Shop at ECS Tuning
08 Sound insulating roof rear 1 51481866268 $13.11 ENDED Shop at ECS Tuning
09 Sound insulating roof front 1 51481866267 $13.11 ENDED Shop at ECS Tuning
For vehicles with
California version

=Yes
10 Heat insulation tunnel upper 1 51481855558 $103.70 ENDED Shop at ECS Tuning
11 Heat insulation tunnel bottom 1 51481860185 Shop at ECS Tuning
12 Damping piece for apron 1 51481825917 ENDED Shop at ECS Tuning
13 Sound deadener 1160X700MM X 51488165271 $50.35 Shop at ECS Tuning
Notes
  • ENDED = the part has been discontinued (no longer available).

See Also

Frequently Asked Questions

What assembly is shown in the BMW 3 Series E21 320i Sound insulation?
This technical diagram illustrates the Sound insulation within the Vehicle trim group for the 3 Series E21 320i produced during 1982. It provides a detailed exploded view of the components, identifying key parts such as the Heat insulation tunnel bottom (Part #51481856988).
Which models use the hardware listed in this Sound insulation?
The hardware and components featured in the Sound insulation are specific to the 3 Series E21 320i produced during 1982. These technical specifications ensure that parts like the Heat insulation tunnel bottom (51481856988) are correctly matched to the vehicle's structural and mechanical requirements.
How do I find specific parts within the Sound insulation assembly?
Each item in the Sound insulation corresponds to the numbered list below the illustration. For the 3 Series E21 320i, you can identify the Heat insulation tunnel bottom by locating its position on the schematic, which then links to the official BMW part number 51481856988 for the Vehicle trim section.