This Original Equipment Manufacturer part is the same part that was made & installed by the car manufacturer at the factory where the car was produced.
Volvo has replaced strut assembly 31200416 with part #31277877. If using 31277877 in place of the original 31200416 strut assembly, this Strut Bump Stop #31277953 MUST also be used. This Strut Bump Stop is only needed with strut #31277877; other strut part #s DO NOT require this Strut Bump Stop.