Koyo PU126231ARR9D Timing Belt Idler Bearing

The Koyo PU126231ARR9D is a precision-engineered timing belt idler bearing designed for reliable performance in automotive engine timing systems. This sealed deep groove ball bearing features chrome steel construction and is manufactured to OEM specifications by JTEKT Corporation (Koyo).

Key Specifications:

• Inside Diameter: 47mm
• Outside Diameter: 85mm
• Thickness: 20.75mm
• Alternative Part Number: 60/32RR9D
• Sealed bearing design for protection against contaminants

Features and Benefits:

• Sealed deep groove ball bearing construction prevents dust and moisture intrusion
• High-temperature resistant seals and specialized grease formulated for engine compartment conditions
• Chrome steel bearing material ensures durability and longevity
• Precision manufacturing to ABEC-1 through ABEC-9 tolerances
• Designed to withstand high-speed rotation and elevated engine temperatures

This idler bearing is commonly used in Toyota and Lexus V6 engines including 1VZ, 3VZ, 4VZ, 5VZ, 1MZ, and 3MZ engine families. Cross-references with OEM numbers 13503-62040 and W0133-1630848. Replacement is typically recommended during timing belt service intervals, approximately every 100,000 km or 5 years.