Good evening,
Yes, you can replace it with used but you are taking a chance if the used one is no good.
I attached a picture of one available from rockauto. It is pricey but so are all the parts for a Lexus.
Roy
Procedure
REMOVAL
1. REMOVE COOL AIR INTAKE DUCT SEAL
2. DRAIN ENGINE COOLANT
3. REMOVE ENGINE ROOM SIDE COVER RH
4. REMOVE V-BANK COVER SUB-ASSEMBLY
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5. DISCONNECT NO. 2 VENTILATION HOSE
a. Disconnect the ventilation hose from the cylinder head.
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6. REMOVE AIR CLEANER CAP WITH AIR CLEANER HOSE
a. Disconnect the MAF meter connector.
b. Disconnect the clamp from the air cleaner.
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c. Disconnect the VSV hose.
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d. Disconnect the 4 clamps.
e. Remove the hose clamp and air cleaner cap with air cleaner hose.
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7. REMOVE THROTTLE BODY
a. Disconnect the throttle motor connector.
b. Remove the 4 bolts and disconnect the throttle body from the intake air surge tank.
Images (Click to enlarge)
Jan 29, 2019 at 3:40 PM