2016–2022 Lexus RX
By Ray Delgado ✓ Certified Mechanic · Published Sep 21, 2026 · Updated Oct 22, 2026
Save $75 by doing it yourself! Shop cost: $110
Quick answer: Engine Air Filter Replacement on a 2016–2022 Lexus RX is rated Easy and takes about 5–10 minutes. No tools are required for this job, and parts cost about $35. This guide walks you through the full job step by step, including the mistakes to avoid.
| Part Name | Part Number | Price | Buy |
|---|---|---|---|
| Engine air filter for 2016-2022 Lexus RX 350; verify engine, housing shape, and VIN fitment | — | $35.00 |
About prices: shown prices are typical retail averages and change frequently; cheaper alternatives may be available. Confirm the current price before buying.
💡 Pro tip: Order all parts at once to save on shipping
Follow these steps carefully
Give a hot engine 15 minutes to cool. On the RX350 this feeds the 3.5L 2GR-FKS V6; if you own the RX450h hybrid instead, its 2GR-FXS powertrain uses a similar clip-style box, but double-check your filter matches the hybrid before opening anything.
Flip each clip off its catch around the lid. You do not need to remove any engine covers to reach this box.
Tilt the lid up and aside. Don't yank the lid sideways or stretch that wiring harness. Never touch the MAF sensor's sensing element; oil or pressure on it can cause a check-engine light and rough running.
I never learn this the expensive way: Never touch the MAF sensor's sensing element; oil or pressure on it can cause a check-engine light and rough running.
Pull the old filter out and note its orientation — which face was up and which edge sat where. Inspect it like a mechanic would: look for dark "hot spots" of concentrated dirt, embedded leaves, or a sagging rubber frame. An evenly dirty filter was simply due; a crushed or folded edge suggests a previous sloppy install that never sealed right.
Quick word from me — I've been under there: Inspect it like a mechanic would: look for dark "hot spots" of concentrated dirt, embedded leaves, or a sagging rubber frame.
With the filter out, run a clean microfiber cloth around the lower housing to pick up sand, leaves, and grit sitting in the tray. This takes a minute and keeps debris from being sucked straight onto your brand-new filter the first time you start up. Check the housing rim and lid seal for cracks — any crack passes dirt around the filter no matter how fresh it is.
Lower the new filter into the tray in the same orientation as the old one. A clip that suddenly won't close in step 7 almost always means the gasket isn't seated, not that the clip is broken.
Set the lid back down squarely and flip each clip back onto its catch — count them and confirm none are left loose. Start the engine and let it idle for a minute.
Test your repair before closing everything up. If something doesn't work right, double-check your steps.
⚠️ Common Mistakes to Avoid
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2016–2022
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