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Hayden 5021 Accessory Drive Belt Idler Pulley
| Brand | Hayden 5021 |
|---|---|
| Belt Type | Serpentine |
| Belt Width IN | .88 |
| Belt Width MM | 22.4 |
| Bore Dia. IN | .47 |
| Color | Black |
| Description | Idler / Tensioner Pulley |
| Groove Quantity | 6 |
| I.D. MM | 12.0 |
| Inside Diameter | 1.18 |
| Material | Steel |
| Meets / Exceeds OEM? | Yes |
| Mount Hole Qty | 1 |
| Mounting Hardware? | Not Included |
| O.D. MM | 70.0 |
| Outside Diameter | 2.76 |
| Pulley Type | Idler Pulley |
| Pulley Width IN | 1.18 |
| Pulley Width MM | 30 |
| Style | Idler / Tensioner Pulley |
| Type | Pulley |
| Width | 22.2 |
| Product line | Pulley |
| Fits | Lexus and Toyota · 98 vehicles |
OE direct replacement. Meets or exceeds OEM requirements for dependable fit and function.
Steel construction. Durable material stands up to demanding accessory drive use.
Serpentine pulley. Keeps the belt system running smoothly as an idler or tensioner.
Cross-references Continental 49086, Dayco 89154 and DENSO Auto Parts 5021 for the same application. See all 17.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Accessory Drive Belt Idler Pulley for Toyota and Lexus
Hayden 5021 is an accessory drive belt idler pulley built for serpentine belt systems. It is a steel, black-finished pulley with a 6-groove design and OEM-matching dimensions for direct replacement service on select Toyota and Lexus applications.
Key Features
- Steel pulley construction with black finish
- 6-groove serpentine belt design
- Outside diameter: 2.76 in. (70.0 mm)
- Inside diameter: 1.18 in. (12.0 mm)
- Bore diameter: 0.47 in.
- Pulley width: 1.18 in. (30 mm)
- Meets or exceeds OEM requirements
- Idler / tensioner pulley style
Product Details
The Hayden 5021 accessory drive belt idler pulley is designed for vehicles using a 0.88 in. serpentine belt width and a 6-rib belt path. Its steel construction supports stable belt tracking, while the 70.0 mm outside diameter and 12.0 mm inside diameter help maintain the correct belt routing geometry. This pulley is a direct-fit service part for applications including 2000-2009 Toyota Tundra, 2003-2009 Toyota 4Runner, 1998-2007 Toyota Land Cruiser, 2003-2009 Lexus GX470, and 2002-2010 Lexus SC430. Hayden 5021 also cross-references DENSO Auto Parts 5021 for the same application.
Common Uses
- Restoring proper serpentine belt alignment
- Replacing a noisy or rough-spinning idler pulley
- Correcting belt squeal caused by pulley wear
- Addressing belt tracking issues in accessory drive systems
- Supporting consistent belt tension path operation
Installation Notes
Verify pulley dimensions, groove count, and belt width before installation. Mounting hardware is not included. Inspect the serpentine belt, tensioner, and adjacent accessory drive components during service to confirm the source of wear. This part is used on select Lexus LS430, Lexus GS430, Toyota Sequoia, and Toyota Tundra applications, so confirm year and model match before ordering Hayden 5021.
Quality Assurance
Hayden 5021 is engineered to meet or exceed OEM specifications for fit and function. It is built as an OE-style replacement pulley for accessory drive belt service on select Toyota and Lexus vehicles.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2010 | Lexus | SC430 | — | — | N/A | Pulley |
| 2009 | Lexus | GX470 | — | — | N/A | Pulley |
| 2009 | Lexus | SC430 | — | — | N/A | Pulley |
| 2009 | Toyota | 4Runner | 4.7L | V8 | N/A | Pulley |
| 2009 | Toyota | Sequoia | 4.7L | V8 | N/A | Pulley |
| 2009 | Toyota | Tundra | 4.7L | V8 | N/A | Pulley |
| 2008 | Lexus | GX470 | — | — | N/A | Pulley |
| 2008 | Lexus | SC430 | — | — | N/A | Pulley |
| 2008 | Toyota | 4Runner | 4.7L | V8 | N/A | Pulley |
| 2008 | Toyota | Sequoia | 4.7L | V8 | N/A | Pulley |
| 2008 | Toyota | Tundra | 4.7L | V8 | N/A | Pulley |
| 2007 | Lexus | GS430 | — | — | N/A | Pulley |
| 2007 | Lexus | GX470 | — | — | N/A | Pulley |
| 2007 | Lexus | LX470 | — | — | N/A | Pulley |
| 2007 | Lexus | SC430 | — | — | N/A | Pulley |
| 2007 | Toyota | 4Runner | 4.7L | V8 | N/A | Pulley |
| 2007 | Toyota | Land Cruiser | — | — | N/A | Pulley |
| 2007 | Toyota | Sequoia | — | — | N/A | Grooved Pulley; Pulley |
| 2007 | Toyota | Tundra | 4.7L | V8 | N/A | Pulley |
| 2006 | Lexus | GS430 | — | — | N/A | Pulley |
| 2006 | Lexus | GX470 | — | — | N/A | Pulley |
| 2006 | Lexus | LS430 | — | — | N/A | Pulley |
| 2006 | Lexus | LX470 | — | — | N/A | Pulley |
| 2006 | Lexus | SC430 | — | — | N/A | Pulley |
| 2006 | Toyota | 4Runner | 4.7L | V8 | N/A | Pulley |
| 2006 | Toyota | Land Cruiser | — | — | N/A | Pulley |
| 2006 | Toyota | Sequoia | — | — | N/A | Grooved Pulley; Pulley |
| 2006 | Toyota | Tundra | 4.7L | V8 | N/A | Pulley |
| 2005 | Lexus | GS430 | — | — | N/A | Pulley |
| 2005 | Lexus | GX470 | — | — | N/A | Pulley |
| 2005 | Lexus | LS430 | — | — | N/A | Pulley |
| 2005 | Lexus | LX470 | — | — | N/A | Pulley |
| 2005 | Lexus | SC430 | — | — | N/A | Pulley |
| 2005 | Toyota | 4Runner | 4.7L | V8 | N/A | Pulley |
| 2005 | Toyota | Land Cruiser | — | — | N/A | Pulley |
| 2005 | Toyota | Sequoia | — | — | N/A | Grooved Pulley; Pulley |
| 2005 | Toyota | Tundra | 4.7L | V8 | N/A | Pulley |
| 2004 | Lexus | GS430 | — | — | N/A | Pulley |
| 2004 | Lexus | GX470 | — | — | N/A | Pulley |
| 2004 | Lexus | LS430 | — | — | N/A | Pulley |
| 2004 | Lexus | LX470 | — | — | N/A | Pulley |
| 2004 | Lexus | SC430 | — | — | N/A | Pulley |
| 2004 | Toyota | 4Runner | 4.7L | V8 | N/A | Pulley |
| 2004 | Toyota | Land Cruiser | — | — | N/A | Pulley |
| 2004 | Toyota | Sequoia | — | — | N/A | Grooved Pulley; Pulley |
| 2004 | Toyota | Tundra | 4.7L | V8 | N/A | Pulley |
| 2003 | Lexus | GS430 | — | — | N/A | Pulley |
| 2003 | Lexus | GX470 | — | — | N/A | Pulley |
| 2003 | Lexus | LS430 | — | — | N/A | Pulley |
| 2003 | Lexus | LX470 | — | — | N/A | Pulley |
| 2003 | Lexus | SC430 | — | — | N/A | Pulley |
| 2003 | Toyota | 4Runner | 4.7L | V8 | N/A | Pulley |
| 2003 | Toyota | Land Cruiser | — | — | N/A | Pulley |
| 2003 | Toyota | Sequoia | — | — | N/A | Grooved Pulley; Pulley |
| 2003 | Toyota | Tundra | 4.7L | V8 | N/A | Pulley |
| 2002 | Lexus | GS430 | — | — | N/A | Pulley |
| 2002 | Lexus | LS430 | — | — | N/A | Pulley |
| 2002 | Lexus | LX470 | — | — | N/A | Pulley |
| 2002 | Lexus | SC430 | — | — | N/A | Pulley |
| 2002 | Toyota | Land Cruiser | — | — | N/A | Pulley |
| 2002 | Toyota | Sequoia | — | — | N/A | Grooved Pulley; Pulley |
| 2002 | Toyota | Tundra | 4.7L | V8 | N/A | Pulley |
| 2001 | Lexus | GS430 | — | — | N/A | Pulley |
| 2001 | Lexus | LS430 | — | — | N/A | Pulley |
| 2001 | Lexus | LX470 | — | — | N/A | Pulley |
| 2001 | Toyota | Land Cruiser | — | — | N/A | Pulley |
| 2001 | Toyota | Sequoia | — | — | N/A | Grooved Pulley; Pulley |
| 2001 | Toyota | Tundra | 4.7L | V8 | N/A | Pulley |
| 2000 | Lexus | GS400 | — | — | N/A | Pulley |
| 2000 | Lexus | LS400 | — | — | N/A | Pulley |
| 2000 | Lexus | LX470 | — | — | N/A | Pulley |
| 2000 | Lexus | SC400 | — | — | N/A | Pulley |
| 2000 | Toyota | Land Cruiser | — | — | N/A | Pulley |
| 2000 | Toyota | Tundra | 4.7L | V8 | N/A | Pulley |
| 1999 | Lexus | GS400 | — | — | N/A | Pulley |
| 1999 | Lexus | LS400 | — | — | N/A | Pulley |
| 1999 | Lexus | LX470 | — | — | N/A | Pulley |
| 1999 | Lexus | SC400 | — | — | N/A | Pulley |
| 1999 | Toyota | Land Cruiser | — | — | N/A | Pulley |
| 1998 | Lexus | GS400 | — | — | N/A | Pulley |
| 1998 | Lexus | LS400 | — | — | N/A | Pulley |
| 1998 | Lexus | LX470 | — | — | N/A | Pulley |
| 1998 | Lexus | SC400 | — | — | N/A | Pulley |
| 1998 | Toyota | Land Cruiser | — | — | N/A | Pulley |
| 1997 | Lexus | LS400 | — | — | N/A | Pulley |
| 1997 | Lexus | SC400 | — | — | N/A | Pulley |
| 1996 | Lexus | LS400 | — | — | N/A | Pulley |
| 1996 | Lexus | SC400 | — | — | N/A | Pulley |
| 1995 | Lexus | LS400 | — | — | N/A | Pulley |
| 1995 | Lexus | SC400 | — | — | N/A | Pulley |
| 1994 | Lexus | LS400 | — | — | N/A | Pulley |
| 1994 | Lexus | SC400 | — | — | N/A | Pulley |
| 1993 | Lexus | LS400 | — | — | N/A | Pulley |
| 1993 | Lexus | SC400 | — | — | N/A | Pulley |
| 1992 | Lexus | LS400 | — | — | N/A | Pulley |
| 1992 | Lexus | SC400 | — | — | N/A | Pulley |
| 1991 | Lexus | LS400 | — | — | N/A | Pulley |
| 1990 | Lexus | LS400 | — | — | N/A | Pulley |
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