Dorman 82596 Engine Coolant Reservoir Cap

Reliable Engine Coolant Reservoir Cap for Select GM Vehicles

The Dorman 82596 engine coolant reservoir cap is designed to provide a secure seal for the coolant reservoir in various Buick, Cadillac, Chevrolet, Oldsmobile, and Pontiac models. Its durable plastic construction and twist-on attachment ensure a proper fit and reliable performance.

• Constructed from durable black plastic for corrosion resistance
• Measures 50.9 mm in diameter for precise fitment
• Twist-on attachment type for easy installation and removal
• Non-vented and non-pressurized design suitable for specific coolant systems
• Compact size with 1.615 inches length and 2.003 inches width
• Includes one engine coolant reservoir cap per package

Product Details and Specifications

The Dorman 82596 coolant reservoir cap is engineered to meet the specifications required by several GM vehicles, including Buick Calais, Cadillac Cimarron, Chevrolet Cavalier, Oldsmobile Cutlass Calais, and Pontiac Grand Am, among others. The cap’s black plastic material offers resistance to heat and chemical exposure commonly found in engine compartments. Its 50.9 mm diameter and twist-on design ensure a secure and leak-free seal on the coolant reservoir. This cap does not include a pressure release lever and is neither vented nor pressurized, making it compatible with coolant systems designed for non-pressurized caps.

Compatible Vehicles and Applications

This engine coolant reservoir cap is compatible with the following makes and models:

• Buick Calais
• Cadillac Cimarron
• Chevrolet Cavalier
• Oldsmobile Cutlass Calais, Firenza, J2000, J2000 Sunbird, Skyhawk, Skylark, Sunbird
• Pontiac Grand Am

Common Issues Addressed by This Coolant Cap

• Prevents coolant leaks from the reservoir
• Maintains proper coolant system pressure where applicable
• Prevents contamination of coolant fluid
• Ensures secure attachment to avoid cap loosening during operation
• Helps maintain engine temperature regulation by sealing the reservoir

Installation Notes and Tips

Installation of the Dorman 82596 coolant reservoir cap is straightforward due to its twist-on design. Before installation, ensure the reservoir neck is clean and free of debris. Align the cap properly and twist until it is securely seated. Avoid over-tightening to prevent damage to the cap or reservoir neck. This cap is designed for non-pressurized coolant reservoirs, so verify compatibility with your vehicle’s cooling system specifications.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 82596 engine coolant reservoir cap undergoes quality checks to ensure durability and reliable performance. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in material and workmanship. Refer to the product packaging or Dorman’s official documentation for exact warranty terms.