TOYOTA 11321-17040 Timing Belt Cover No. 1

The genuine Toyota timing belt cover (part number 11321-17040 / Timing Belt Cover No. 1) is an essential protective component for the engine timing drive. Specifically designed for Toyota's 4.2-liter naturally aspirated and turbocharged diesel engines (1HZ, 1HD-T), its primary function is to physically isolate and shield the timing belt, idlers, and tensioner pulleys from engine compartment contaminants, such as dust, mud, moisture, oil leaks, and other mechanical foreign objects.

Mechanical damage, cracks, or deformation of the cover can lead to premature wear, surface damage, or even catastrophic failure of the timing belt. Because these diesel engines feature an interference design, timing belt failure results in severe valve and cylinder head damage. Installing a genuine Toyota OEM component guarantees an exact fit, superior resistance to vibration and heat, and optimal sealing against the engine block face.

Technical Specifications:

• Manufacturer: TOYOTA (OEM)
• Part Number: 11321-17040
• Alternative / Superseded Part Number: 1132117030
• Part Designation: Timing Belt Cover / No. 1 Cover
• Installation Position: Engine front face, front timing protective cover
• Applicable Engine Codes: 4.2 D (1HZ), 4.2 TD (1HD-T)

Compatible Vehicles:

• Toyota Coaster (B40/B50) 4.2 D [1997 - ...] (COVER, TIMING BELT, NO.1 (1HZ))
• Toyota Coaster (B60/B70) 4.2 D [2017 - 9999] (COVER, TIMING BELT, NO.1 (1HZ))
• Toyota Land Cruiser 100 (J100) 4.2 TD [1998 - 2002] (COVER, TIMING BELT, NO.1 (HDJ100, 1HDT))
• Toyota Land Cruiser 100 (J100) 4.2 D [2002 - ...] (COVER, TIMING BELT, NO.1 (HZJ105, 1HZ))
• Toyota Land Cruiser 70 (J70) 4.2 D [1998 - 1999] (COVER, TIMING BELT, NO.1 (HZJ75, 1HZ))