Parts for your 2007 Lexus Is-Egr valve

2007 Lexus IS EGR valve — is it fitted, and does it matter?

Based on factory documentation and parts catalogues, the 2007 Lexus IS petrol models sold in Australia and New Zealand (IS250 4GR‑FSE and IS350 2GR‑FSE) are not equipped with a conventional external EGR (exhaust gas recirculation) valve. The diesel IS220d (2AD‑FHV), sold mainly in Europe and the UK, does have an EGR valve and EGR cooler.

Technical sources referenced:

• Lexus IS250/IS350 Repair Manual (Toyota TIS, 2006–2010): Emission Control section details PCV, EVAP, secondary air injection and three‑way catalysts, no EGR system listed for 4GR‑FSE/2GR‑FSE.
• Toyota New Car Features (NCF) for 4GR‑FSE/2GR‑FSE: Notes that an external EGR system is not adopted, NOx reduction is achieved via precise fuel control and Dual VVT‑i (internal EGR through valve overlap).
• Lexus IS220d Repair Manual (Toyota TIS): Dedicated EGR system section describing the EGR valve and cooler (diesel only).

Why there’s no EGR valve on the 2007 IS250/IS350 petrol models: these direct‑injection V6 engines use Dual VVT‑i to create controlled internal EGR by overlapping intake and exhaust valve timing. Combined with accurate mixture control and fast light‑off catalytic converters (and secondary air injection on applicable markets), they meet emissions targets without a separate EGR valve. That means less intake soot, fewer hot‑side components, and one less failure point under the bonnet.

For owners of 2007 IS250/IS350 chasing “EGR problems,” it’s worth noting there isn’t an external valve to clean or replace. If there are drivability or emissions‑related faults, attention usually turns to items like the MAF sensor, throttle body cleanliness, PCV valve condition, intake valve deposits (common on direct‑injection engines), and the variable valve timing oil control valves and their tiny oil strainers. Secondary air injection hardware (where fitted) can also trigger emissions codes on cold start.

If the car is an IS220d, that’s a different story — the diesel does use an EGR valve and cooler, and periodic inspection/cleaning is normal due to soot and deposit build‑up. But for the 2007 IS petrol lineup common in Australia and New Zealand, an EGR valve simply isn’t part of the servicing picture.

• Does a 2007 Lexus IS250 have an EGR valve?
  Factory literature for the 4GR‑FSE petrol V6 shows no external EGR system. Emissions control is handled by Dual VVT‑i, catalytic converters, EVAP, PCV, and (on some markets) secondary air injection, so there’s no EGR valve to replace.
• Which 2007 Lexus IS models actually use an EGR valve?
  The diesel IS220d is equipped with an EGR valve and cooler and typically needs periodic cleaning. The petrol IS250/IS350 do not have an external EGR valve.
• What should be checked if the 2007 IS250/IS350 has rough idle or emissions faults?
  Look at the MAF sensor, throttle body and PCV valve, inspect for intake valve deposits, and verify VVT oil control valves and their strainers are clean. Where fitted, secondary air injection pumps/valves can also cause cold‑start codes.