### Dayco 89374 Overview

The Dayco 89374 is an Accessory Drive Belt Tensioner Assembly (No Slack™ Automatic Belt Tensioner) designed for serpentine belt systems in Toyota and Lexus vehicles. It features a patented flat spring design for consistent tension, reducing noise, vibration, and belt wear. Built with cast aluminum housing, steel pins, and a smooth pulley, it's engineered to exceed OEM performance.

#### Key Features

- **Pulley Type**: Smooth (non-ribbed).

- **OEM Cross-References**: Toyota 16620-31021, 16620-31040.

- **Aftermarket Equivalents**: Gates 38410/39140, Duralast 305374, ACDelco 38410, CARQUEST 38410, NAPA 38410, Goodyear 49424.

- **Warranty**: Dayco's standard coverage for defects (typically 1-3 years; check retailer).

#### Vehicle Compatibility

This tensioner fits select Toyota and Lexus models, primarily those with **2.5L, 3.0L, or 3.5L V6 engines** (e.g., 2GR-FE, 3GR-FE, 4GR-FSE). Here's a compiled list of common applications:

| Make | Model | Year Range |

|--------|--------------------|----------------|

| **Toyota** | Avalon | 2005–2018 |

| **Toyota** | Camry | 2007–2018 |

| **Toyota** | Highlander | 2008–2016 |

| **Toyota** | RAV4 | 2006–2012 |

| **Toyota** | Sienna | 2007–2016 |

| **Toyota** | 4Runner | 2010–2023 |

| **Toyota** | FJ Cruiser | 2010–2014 |

| **Toyota** | Tundra | 2011–2014 |

| **Toyota** | Venza | 2009–2015 |

| **Lexus** | ES350 | 2007–2018 |

| **Lexus** | GS300 | 2006 |

| **Lexus** | GS350 | 2007–2015 |

| **Lexus** | IS250 | 2006–2015 |

| **Lexus** | IS300 | 2016 |

| **Lexus** | IS350 | 2006–2017 |

| **Lexus** | RC350 | 2015–2017 |

| **Lexus** | RX350 (FWD/AWD) | 2007–2015 |

#### Notes:

- **Engine Specificity**: Primarily for V6 configurations; confirm your engine code (e.g., 2GR-FE for many Camry/Highlander models).

- **Verification**: Use a VIN or parts catalog (e.g., RockAuto, Summit Racing) for exact fitment, as sub-models or drive types (FWD/RWD/AWD) may vary.

- **Installation Tips**: Requires basic tools; torque to OEM specs (typically 20–40 ft-lbs). Inspect belt and pulleys during replacement.