Description: Helps seal and maintain pressure in your vehicle's engine cooling system This GM Genuine part is designed, engineered and tested to rigorous standards, and are backed by General Motors

Description: Low Temperature. Vendor:acdelco. Vendor #131-30. 4.3L. Riviera. Standard. Vendor #131-54. 3.8L. Park Avenue. Controls the flow of coolant through your vehicle's radiator to help the engine reach and maintain its optimal operating temperature

Description: Impala, Monte Carlo. 3.8l. Left. Pontiac. Park Avenue. All models. 3.8l. LaCrosse. 3.8l. Bonneville, LeSabre. 3.8l. Lucerne. Riviera. Grand Prix. Thoroughly tested for reliable, leak-resistant performance Uniform wall sections and smooth coolant-flow cavities for efficient operation Coated seals with a stainless steel spring for durability