TOYOTA 13505-17020 Timing Belt Idler Pulley

The Toyota 13505-17020 genuine (OEM) timing belt idler/tensioner pulley (IDLER SUB-ASSY, TIMING BELT, NO.1) is a critical component of the engine timing drive. Its primary function is to maintain proper tension and precise running geometry for the timing belt during the synchronized rotation of the camshaft and crankshaft. The precision internal bearing minimizes friction and vibration, preventing belt overstretching, slipping, or jumping teeth.

Technical Specifications:

• Manufacturer: TOYOTA (Genuine OEM part)
• Part Number: 13505-17020
• Part Type: Timing Belt Guide/Idler/Tensioner Pulley (No. 1)
• Construction: Durable unit featuring a premium-quality sealed rolling bearing and a heavy-duty contact surface
• Engine Family Compatibility: Toyota 4.2-liter diesel engines (1HZ, 1HD-FT, 1HD-FTE)

Maintenance Guide and Symptoms of Wear:

Indicators of pulley wear include rumbling, humming, or high-pitched whining bearing noises originating from the front of the engine, as well as noticeable radial play or binding when rotated by hand. Failure of timing components can in extreme cases lead to timing belt breakage and catastrophic internal engine collision; therefore, replacing the idler/tensioner pulley at every scheduled timing belt service interval is strictly recommended.

Vehicle Compatibility:

• Toyota Coaster (B40/B50) 4.2 TD [1995 - 1997] (IDLER SUB-ASSY, TIMING BELT, NO.1 (1HDFT))
• Toyota Coaster (B40/B50) 4.2 D [1997 - ...] (IDLER SUB-ASSY, TIMING BELT, NO.1 (1HZ))
• Toyota Coaster (B60/B70) 4.2 D [2017 - 9999] (IDLER SUB-ASSY, TIMING BELT, NO.1 (1HZ))
• Toyota Land Cruiser 100 (J100) 4.2 TD [1998 - ...] (IDLER SUB-ASSY, TIMING BELT, NO.1 (HDJ100, 1HDFTE))
• Toyota Land Cruiser 100 (J100) 4.2 D [1998 - 2002] (IDLER SUB-ASSY, TIMING BELT, NO.1 (HDJ100, 1HZ))
• Toyota Land Cruiser 70 (J70) 4.2 D [1998 - 1999] (IDLER SUB-ASSY, TIMING BELT, NO.1 (HZJ75, 1HZ))
• Toyota Land Cruiser 80 (J80) 4.2 TD [1995 - 1998] (IDLER SUB-ASSY, TIMING BELT, NO.1 (HDJ81, 1HDFT))