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The Sparco seat base for BMW 3 Series (1975–1983), left side, is a vehicle-specific mounting plate that adapts Sparco seats to the factory floor attachment points. It serves as a direct-fit left-side replacement to ensure proper seat alignment and should be used with the matching right-side base when performing a full front-seat replacement.
Sparco Base BMW 3 Series 75-83 Lft
