Parts for your 2013 Honda Stream-Egr valve

2013 Honda Stream egr-valve — is it fitted?

For the 2013 Honda Stream (RN6–RN9) with the petrol R-series engines (R18A 1.8L and R20A 2.0L), an external egr-valve isn’t used. Honda engineered these engines to meet emissions and fuel economy targets using variable valve timing and lift control (i‑VTEC/VTC) strategies that provide “internal EGR” via cam timing, so there’s no separate egr-valve to service or replace on these models.

This design choice shows up clearly when checking the factory information for the RN6–RN9 Stream: the emissions control overview lists EGR as “not equipped” for the R18A/R20A, and Honda’s electronic parts catalog doesn’t list an egr-valve assembly for these engines. Technical development papers on Honda’s R‑series also explain that delayed intake valve closing and cam phasing are used to lower pumping losses and recirculate a controlled portion of exhaust gas within the cylinder, achieving the emissions and economy benefits normally associated with an external EGR circuit.

Why Honda doesn’t use an egr-valve here:

• Internal-EGR via cam timing meets NOx and economy targets without an external valve and piping.
• Fewer parts, lower cost, and less risk of carbon clogging or valve failure.
• Smoother control at light load, improving drivability and fuel use in everyday Kiwi and Aussie conditions.

Owners chasing an “EGR clean” on a 2013 Stream are usually dealing with other routine items. If there’s rough idle, pinging, or hesitation, the usual suspects are the throttle body and idle passages, PCV valve, spark plugs, coil performance, intake runner deposits, MAP/MAF sensor accuracy, or a software calibration update. Quality fuel (at least 95 RON where recommended), fresh plugs at the specified service interval, and periodic intake cleaning go a long way.

Technical references (manufacturer and engineering sources):

• Honda Stream RN6–RN9 Factory Service Manual, Emissions Control section (R18A/R20A): EGR not equipped on petrol models.
• Honda Electronic Parts Catalog (RN6–RN9): No egr-valve assembly listed for R18A/R20A engines.
• SAE Technical Paper on Honda’s 1.8L R-series i‑VTEC engine (Civic application): describes use of delayed intake valve closing and cam phasing to reduce pumping losses and provide internal EGR, eliminating a conventional egr-valve on these petrol engines.

Popular questions about the 2013-honda-stream egr-valve

Does the 2013 Honda Stream have an egr-valve?
For the petrol R18A/R20A models, no. Honda relies on cam phasing (i‑VTEC/VTC) to achieve internal EGR, so there’s no external egr-valve to replace or clean. The 2013 Stream range in most markets was petrol-only, so an egr-valve isn’t part of the emissions hardware.

Why do some sources say to clean the egr on a Stream?
That’s usually confusion with other Honda engines or generic advice. Workshops may actually be referring to cleaning the throttle body, intake manifold passages, or EGR-like deposits in the intake track. On the 2013 Stream petrol models, there’s no separate egr-valve to service.

What should be checked instead of the egr-valve if there’s a stumble or ping?
Look at the throttle body and idle passages, PCV valve operation, spark plugs and coils, MAP/MAF sensor readings, and carbon build-up in the intake runners. Also consider fuel quality (95+ RON where appropriate) and software updates. These items commonly fix “EGR-like” symptoms on R-series Streams.