Timken HM88648 Differential Pinion Bearing - Front Inner or Rear Inner

Timken HM88648 Differential Pinion Bearing Overview

The Timken HM88648 differential pinion bearing is engineered for reliable performance in a range of vehicles including Dodge, Ford, Jeep, Mazda, and Mercury models. Designed to meet precise specifications, this bearing supports smooth driveline operation and helps maintain differential integrity.

• Inside diameter options: 1.406 inches and 35.72 mm for accurate fitment
• Cone radius measurements of 0.138 inches and 3.50 mm ensure proper seating
• Compatible with multiple vehicle models such as Ford Explorer, Jeep Cherokee, Dodge Dakota, and Mazda B2300
• Part number HM88648 for easy identification and replacement
• Manufactured by Timken, a trusted name in driveline and axle components

Technical Specifications and Attributes

This differential pinion bearing features an inside diameter of 1.406 inches (35.72 mm), which is critical for fitting the pinion shaft securely within the differential assembly. The cone radius values of 0.138 inches (3.50 mm) contribute to the bearing’s ability to handle axial and radial loads effectively. These precise measurements ensure compatibility with specific driveline configurations found in vehicles like the Ford Mustang, Jeep Wrangler, and Mercury Mountaineer.

Compatible Vehicles and Applications

The Timken HM88648 bearing is compatible with a variety of makes and models, including but not limited to:

• Dodge Dakota, Durango, and Ramcharger
• Ford Explorer, Mustang, Bronco II, and Thunderbird
• Jeep Cherokee, Grand Cherokee, Wrangler, and TJ
• Mazda B2300, B2600, B3000, and B4000
• Mercury Mountaineer and Capri

This part is designed specifically for differential pinion bearing replacement, ensuring proper driveline function and longevity.

Common Issues Addressed by This Bearing

• Eliminates excessive pinion shaft play and noise
• Reduces wear caused by improper bearing fit or damage
• Prevents differential overheating due to bearing failure
• Restores smooth rotation and load distribution in the differential
• Helps avoid costly driveline repairs by maintaining bearing integrity

Installation Notes and Tips

When installing the Timken HM88648 differential pinion bearing, ensure the bearing is properly seated on the pinion shaft with the correct torque specifications. Clean all mating surfaces and inspect the differential housing for wear or damage before installation. Use appropriate tools to avoid bearing damage during press-fit installation. It is recommended to replace the bearing in pairs or along with other differential components to maintain balanced performance.

Quality Assurance and Warranty

Timken manufactures the HM88648 bearing to meet stringent quality standards, ensuring durability and consistent performance. This bearing undergoes rigorous testing to comply with OEM specifications. While specific warranty details may vary, Timken products typically include coverage against manufacturing defects, providing confidence in the part’s reliability for your Dodge, Ford, Jeep, Mazda, or Mercury vehicle.