Toyota Prius / Lexus CT200h 1.8L Hybrid Fuel Injector Cleaning & Flow Testing

The Denso 23250-37020 is a MPFI hybrid (port injection) fuel injector used in Toyota Prius, Prius V and Prius Plug-In 1.8L (2010-2015), plus Lexus CT200h 1.8L (2011-2015) — all the 2ZR-FXE hybrid engine. Denso EV14 with a 12-hole nozzle. Short-trip hybrid running is exactly the duty cycle that fouls these.. We ultrasonic-clean and flow-test injectors like this one in our shop, then send back before-and-after data so you know exactly what you're getting.

Manufacturer	Denso
Part number	23250-37020
Type	MPFI hybrid (port injection)
Connector	Denso (12-hole nozzle)

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Our measured results

These are the actual before-and-after numbers from our flow bench for the Denso 23250-37020 — not published estimates.

Tested in our shop	4 injector(s) @ 40.0 psi
Measured coil (avg)	12.38 Ω
10s open flow (avg)	43.5 → 45.0 ml (+3.4%)
60s pulsed flow (avg)	42.75 → 43.5 ml
Leak test after cleaning	4/4 PASS

Also known as / cross-references

The Denso 23250-37020 is interchangeable with or cross-references to these part numbers:

23209-3702023250-37021297500-1580 (Denso)842-12373

What vehicles use the Denso 23250-37020?

Toyota Prius, Prius V and Prius Plug-In 1.8L (2010-2015), plus Lexus CT200h 1.8L (2011-2015) — all the 2ZR-FXE hybrid engine. Denso EV14 with a 12-hole nozzle. Short-trip hybrid running is exactly the duty cycle that fouls these.

How we service the Denso 23250-37020

Every MPFI hybrid (port injection) Denso 23250-37020 we take in gets the full bench treatment, tested at 40 psi: ultrasonic cleaning, backflushing, before-and-after open and pulsed flow testing, leak testing, spray-pattern inspection, and new O-rings and micro-filter baskets where available. You get back a detailed Injector Performance Report with the actual before-and-after numbers for your own set, and round-trip USPS shipping is $15 flat.

Frequently asked questions

What vehicles use the Denso 23250-37020 injector?

The Denso 23250-37020 is used in Toyota Prius, Prius V and Prius Plug-In 1.8L (2010-2015), plus Lexus CT200h 1.8L (2011-2015) — all the 2ZR-FXE hybrid engine. Denso EV14 with a 12-hole nozzle. Short-trip hybrid running is exactly the duty cycle that fouls these..

Can you clean and test a 23250-37020 injector?

Yes. We ultrasonic-clean, backflush, and flow-test the Denso 23250-37020 on our bench, including before-and-after open and pulsed flow, leak testing, and spray-pattern inspection, with new O-rings where available.

What did the 23250-37020 flow at?

On our bench, 4 23250-37020 injectors averaged 43.5 ml open flow before cleaning and 45.0 ml after, tested at 40.0 psi.

How much does it cost?

Standard MPFI top-feed injectors are $30 each; side-feed, GDI, TBI and specialty injectors are $35 each. Round-trip shipping is $15 flat, 2-injector minimum.

How do I send them in?

Start an order on our Get Started page, ship your injectors to our Weymouth, MA shop, and we return them cleaned, tested, and documented.

Send in your 23250-37020 injectors

Mail-in cleaning and flow testing with a full before/after report. 2-injector minimum, $15 flat round-trip shipping.

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