Dorman 82594 Engine Coolant Reservoir Cap

Reliable Engine Coolant Reservoir Cap for Select GM and Saab Vehicles

The Dorman 82594 engine coolant reservoir cap is designed to provide a secure seal for your vehicle's coolant system. Engineered with durable plastic and a twist-on attachment, this cap ensures proper containment of coolant in models like the Chevrolet Blazer, GMC Envoy, and Saab 9-7x.

• Constructed from durable black plastic for corrosion resistance
• Measures 51.18 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 dimensions: 0.614 inches length and 2.015 inches width

Product Details and Specifications

The Dorman 82594 coolant reservoir cap is a twist-type cap made from sturdy plastic material, designed to fit a range of GM and Saab vehicles. Its 51.18 mm diameter ensures compatibility with coolant reservoirs on models such as the Buick LeSabre, Chevrolet Colorado, GMC Canyon, Hummer H3, Oldsmobile Bonneville, Pontiac Grand Am, and Saab 9-7x. The cap does not include a pressure release lever and is neither vented nor pressurized, making it suitable for coolant systems that rely on separate pressure regulation components.

Compatible Vehicles and Applications

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

• Buick LeSabre
• Chevrolet Astro, Blazer, Colorado, Express 1500/2500/3500, S10, S10 Blazer, Trailblazer, Trailblazer EXT
• GMC Bravada, Canyon, Envoy, Envoy XL, Envoy XUV, Jimmy, Safari, Savana 1500/2500/3500, Sonoma
• Hummer H3, H3T
• Oldsmobile Bonneville
• Pontiac Bonneville
• Saab 9-7x

Common Issues Addressed by This Coolant Reservoir Cap

• Preventing coolant leaks due to worn or damaged caps
• Maintaining proper coolant system pressure in non-pressurized reservoirs
• Ensuring a secure seal to avoid contamination of the coolant
• Replacing missing or cracked caps to maintain system integrity
• Providing a reliable replacement for twist-on style coolant caps

Installation Notes and Tips

Installation of the Dorman 82594 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 clockwise until securely seated. Avoid over-tightening to prevent damage to the cap or reservoir. This cap is designed for non-pressurized coolant reservoirs and should not be used in systems requiring vented or pressurized caps.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM specifications, providing reliable performance and durability. The 82594 coolant reservoir cap undergoes quality checks to ensure proper fit and function. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in material and workmanship.