Genuine Toyota Idler Pulley Sub-Assembly No.2 – OEM 16604-31020 / 16604-0P011, Made In Japan

This is a genuine Toyota idler pulley, part number 16604-31020 (also 1660431020 and 16604-0P011).

It's the No.2 idler sub-assembly.

Made in Japan, OEM quality.

If your idler pulley is noisy or seized, replace it with this factory part.

Fits various Toyota and Lexus models—check your application.

It's brand new, not aftermarket.

Interchanges with 16604-0P011.

Universal fitment?

No—specific to Toyota applications.

It's not a performance part, just OE spec.

If you're doing a timing belt or serpentine belt job, swap this pulley while you're in there.

Smooth, quiet operation.

Genuine Toyota reliability.