ACDelco GM 21648 Radiator delivers exceptional thermal management through its advanced heat exchange design. Positioned at the vehicle's front for maximum airflow, this GM Genuine Part features aluminum construction with plastic components for optimal durability and heat dissipation. Engineered to precise specifications with superior corrosion resistance, it maintains the same quality standards as original equipment. Previously marketed under ACDelco GM OE, this authentic General Motors component ensures reliable performance and perfect fitment for compatible GM vehicles.

• Lightweight; the radiators have a positive heat transfer to weight ratio
• Corrosion-resistant aluminum designed core helps optimize the radiators long lasting
• Some GM Genuine Parts may have formerly appeared as ACDelco GM OE
• GM Genuine Parts are designed, engineered and tested to rigorous standards and are backed by General Motors
• GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC or Cadillac vehicle.
• GM regularly updates production and service part designs to integrate new materials and technologies

Product Specifications