Dorman 300-398 Power Steering Pump Pulley

Overview of Dorman Power Steering Pump Pulley 300-398

The Dorman 300-398 power steering pump pulley is engineered for reliable performance in select Buick, Cadillac, Chevrolet, and GMC vehicles. Designed with durable steel construction and a precise press fit mount, this pulley supports efficient power steering system operation.

• Constructed from durable steel with a black finish for corrosion resistance
• Features 6 grooves compatible with V-belt drive systems
• Measures 5 inches in outside diameter and 1.2 inches in width
• Press fit mount type with a single mounting hole for secure installation
• Standard replacement grade designed to meet OEM specifications
• Compatible with Buick Allure, Cadillac SRX and XTS, Chevrolet Equinox, Impala, Impala Limited, and GMC Terrain and Captiva Sport

Detailed Product Description

The Dorman 300-398 power steering pump pulley is a direct replacement part designed to restore proper function to the power steering pump assembly. Its steel construction ensures strength and durability under typical operating conditions. The black finish helps resist rust and wear over time. With six grooves, this pulley is intended for use with V-belt systems, providing consistent belt engagement and power transfer. The 5-inch outside diameter and 1.2-inch width are engineered to match factory specifications, ensuring compatibility and smooth operation. The press fit mount with a single mounting hole allows for straightforward installation without additional mounting hardware, which is not included.

Compatible Vehicles and Applications

This power steering pump pulley is compatible with a range of GM vehicles, including Buick Allure and LaCrosse models, Cadillac SRX and XTS, Chevrolet Equinox, Impala, and Impala Limited, as well as GMC Terrain and Captiva Sport. It is designed specifically for power steering systems requiring a 6-groove V-belt pulley with a .663 inch bore diameter.

Common Issues Addressed by This Pulley

• Worn or damaged pulley causing belt slippage or noise
• Corroded or rusted pulley affecting power steering pump performance
• Misaligned or bent pulley leading to premature belt wear
• Failure of original pulley resulting in loss of power steering assist
• Replacement needed after power steering pump repair or overhaul

Installation Notes and Tips

The Dorman 300-398 pulley is designed for press fit installation and does not include mounting hardware or installation instructions. It is recommended to use appropriate tools such as a pulley press or puller to remove the old pulley and install the new one without damaging the power steering pump shaft. Verify belt alignment and tension after installation to ensure proper operation. Professional installation is advised if unfamiliar with power steering system components.

Quality Assurance and Warranty

This Dorman power steering pump pulley is manufactured to meet standard replacement grade requirements, ensuring reliable fit and function. While specific warranty details are not provided, Dorman parts typically undergo quality control testing to comply with industry standards. For additional warranty information, consult the product packaging or manufacturer resources.