Generator Belt Idler Pulley 16604-31010 for Toyota 4RUNNER
1660431010 - Engine parts
Price Details
Dealer Price ≠ Your Price
Official dealer price is only a benchmark. Your LongTop quote is significantly lower.
| Brand | Longtop Supply Quote | Action |
|---|---|---|
| FAW Toyota | $14.60 | Check Better Price |
| GAC Toyota | $14.60 | Check Better Price |
| Imported Toyota | $14.56 | Check Better Price |
| Lexus | $14.56 | Check Better Price |
Compatible Models
Vehicle models currently mapped to this OE part.
Show all 84 mapped vehicle models
Product Overview
The genuine Toyota generator belt idler pulley, OE 16604-31010, drives the accessory belt and turns the accessory mounted on it. Fits 4RUNNER, BLADE, ESTIMA, FJ CRUISER, FORTUNER and LEXUS ES240/350, built from 1999 to 2014. The listing carries 4 interchangeable numbers, among them 16604-0P010, 16604-0P011 and 419-651.
Ask for a wholesale quotation with your VIN or OE number; we ship worldwide.
Technical Specifications
| OE Number | 1660431010 |
| Part Name | Idler Pulley |
| Brand | Toyota |
| Position | Left Upper / Right Upper |
| Type | Idler Pulley |
| Outer Diameter | 70mm |
| Width | 34.5mm |
OE Cross-Reference
| 16604-0P010 | Toyota |
| 16604-0P011 | Toyota |
| 419-651 | Dorman |
| 36173 | Gates |
Questions and Answers
Which Toyota and Lexus models does 16604-31010 fit?
Genuine Toyota Generator Belt Idler Pulley 16604-31010 is used on 4RUNNER, BLADE, ESTIMA, FJ CRUISER, FORTUNER and LEXUS ES240/350, built from 1999 to 2014.
Which OEM part numbers interchange with 16604-31010?
4 interchangeable part numbers are listed for 16604-31010, including 16604-0P010 (Toyota), 16604-0P011 (Toyota), 419-651 (Dorman), 36173 (Gates).
What are the dimensions of 16604-31010?
Genuine Toyota Generator Belt Idler Pulley 16604-31010 measures 34.5mm wide, and 70mm outer diameter.
How can I verify that 16604-31010 is a genuine Toyota part?
To verify this Generator Belt Idler Pulley, look for the ten-character number 16604-31010 on the box label together with the country-of-origin marking, then check that the part number is die-stamped or laser-etched into the metal itself rather than printed in ink, and it matches the box label, and that the metal carries the supplier’s mark cast or stamped next to Toyota’s own mark, not a separate printed sticker. We can provide the invoice, packing list and CoO for any order.
Where is 16604-31010 installed on the vehicle?
It is fitted in the Left Upper / Right Upper position.
How many pieces are needed for 16604-31010?
Supplied as one piece per position – check the quantity required for your application.
Is there anything I need to know before installing this part?
Yes. Compare the number on the part with your invoice before installation, and follow the torque values in the service manual.
Is the genuine part worth it compared with an aftermarket equivalent?
The genuine part earns its price in details that matter over time: the part is machined to OE tolerance, so it mounts and seats without shimming or rework; and the OE heat treatment and surface finish help the part resist wear, corrosion and seizing. These are the aftermarket equivalents you may also see quoted.
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