Please check notes in each part listing to ensure the Oxygen (O2) Sensor Connector is correct for your 1986 GMC C3500 PICKUP with a 4.8L 292 engine. STANDARD MOTOR PRODUCTS & ACDELCO are competing brands, and each brand's Oxygen (O2) Sensor Connector may be interchangeable. Special restrictions like "California only" or "with sport package" may indicate a Oxygen (O2) Sensor Connector fits only certain 1986 GMC C3500 PICKUP models.
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