Moog 397 Universal Joint - At Center Bearing, At Rear Axle or At Transmission

Moog Universal Joint for Mazda 626 and RX-7 Drive Shafts

The Moog 397 universal joint is engineered to provide reliable driveline performance for Mazda 626 and RX-7 models. Designed with precision, this greaseable U-joint features four grooved round bearings to ensure smooth operation and durability under various driving conditions.

• Compatible with Mazda 626 and RX-7 drive shafts
• Part number 397 for accurate identification
• Greaseable design with regular lube fitting in bearing
• Four grooved round bearing caps for enhanced durability
• Bearing cap diameter: 0.985 inches (25.0 mm)
• Length measurements: 1.717 inches (43.6 mm) across both axes

Technical Specifications and Features

This Moog universal joint (part number 397) is constructed with four grooved round bearings, each with a diameter of 0.985 inches (25.0 mm), providing consistent rotational support. The greaseable design includes a regular lube fitting located in the bearing, allowing for routine maintenance and extended service life. Length measurements from outside groove to outside groove and inside groove to inside groove plus lock ring thickness are both 1.717 inches (43.6 mm), ensuring precise fitment on compatible Mazda driveline assemblies.

Applications and Problem Solving

This universal joint is specifically designed for use in the driveline and axle systems of Mazda 626 and RX-7 vehicles. It addresses common driveline issues such as:

• Excessive vibration or noise from worn U-joints
• Loss of smooth rotational movement in the drive shaft
• Grease starvation leading to premature bearing wear
• Misalignment or looseness in the driveline connection
• Corrosion or damage to bearing caps affecting performance

Installation Notes and Tips

When installing the Moog 397 universal joint, ensure the following for optimal performance:

• Verify compatibility with Mazda 626 or RX-7 drive shaft assemblies
• Use proper tools to avoid damage to bearing caps and seals
• Apply grease through the regular lube fitting to maintain lubrication
• Check for correct alignment and secure fitment of lock rings
• Inspect surrounding driveline components for wear or damage during installation

Quality Assurance and Warranty

Moog universal joints are manufactured to meet or exceed OEM specifications for Mazda vehicles. The 397 part number undergoes rigorous quality control to ensure durability and reliable performance. This product is greaseable to extend service intervals and maintain driveline integrity. Warranty coverage details should be confirmed through official Moog documentation or authorized distributors.