Parts for your 2007 Honda Stream-Egr valve

Does the 2007 Honda Stream use an EGR valve?

Short answer: no. The 2007 Honda Stream (second generation, chassis codes RN6–RN9) with the 1.8-litre R18A or 2.0-litre R20A petrol i‑VTEC engines does not use a separate, external EGR valve. Instead, these engines achieve the “EGR effect” internally by controlling valve timing and overlap via i‑VTEC and VTC, so there’s no standalone egr‑valve to service or replace on this model year.

This isn’t guesswork. It’s backed by technical sources:

• Honda Electronic Parts Catalogue (EPC) for Stream RN6–RN9: no EGR valve or EGR piping listed for the intake/exhaust sections on R18A/R20A engines.
• Honda Service information for the 2006–2011 Civic R18A (mechanically related to the Stream’s 1.8): the engine control and emissions sections omit an external EGR system, and routine service procedures contain no EGR valve maintenance.
• Honda engineering papers describing the R‑series petrol engines’ use of variable valve timing to generate internal EGR and reduce pumping losses, eliminating the need for an external egr‑valve while meeting emissions targets.

Why Honda didn’t fit an egr‑valve on the 2007 Stream:

• Internal EGR via cam phasing: By adjusting intake valve timing and overlap, the ECU allows a controlled amount of spent gases to remain in the cylinder. That cools combustion and reduces NOx, just like an EGR system, but without extra plumbing.
• Simpler hardware, better reliability: Deleting the external egr‑valve and passages removes a common source of carbon build‑up, vacuum leaks and fault codes.
• Fuel economy and driveability: Internal EGR helps cut pumping losses and improves part‑throttle efficiency, supporting the Stream’s real‑world fuel figures without the response lag some external systems can introduce.

What to maintain instead if someone’s chasing “EGR‑like” issues on a 2007 Stream: focus on the throttle body cleanliness, PCV valve condition, intake tract leaks, up‑to‑date ECU calibrations, and the health of O2 sensors and catalytic converter. Those are the big hitters for idle quality, fuel trim and emissions on these engines. If a parts site lists an egr‑valve for this vehicle, it’s typically a catalogue cross‑over error from other Honda engines that did use external EGR in earlier generations or different markets.

References for identification: Honda EPC (Stream RN6–RN9, intake/exhaust sections), Honda service literature for R18A/R20A engine control systems, and Honda technical papers outlining internal‑EGR strategy on R‑series petrol engines.

• Where is the egr‑valve located on a 2007 Honda Stream?
  It isn’t—this model’s R18A/R20A petrol engines don’t use a separate egr‑valve. The ECU manages internal EGR through variable valve timing, so there’s no external valve or EGR pipework under the bonnet.
• Why do some catalogues show an egr‑valve for this car?
  Generic catalogues sometimes blend listings across Honda models and years. Earlier or different Honda engines used external EGR, but the 2007 Stream’s R‑series petrol engines did not. Always check the RN6–RN9 parts diagrams before ordering.
• What should be serviced if there are “EGR‑type” symptoms?
  Clean the throttle body, verify the PCV valve, check for intake air leaks, confirm oxygen sensor performance, and ensure the ECU is on the latest calibration. These items have the biggest impact on idle stability, fuel economy and emissions for this engine family.