Mercruiser 8.1L 496 / GM Vortec 8100 Fuel Injector Cleaning & Flow Testing

The Delphi 25176061 is a MPFI marine + automotive fuel injector used in Mercury MerCruiser 8.1L MPI: 496 MAG, 496 HO, 8.1S MPI, 8.1L HO; also GM Vortec 4.8L/5.3L/6.0L/8.1L (1999-2007). 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	Delphi
Part number	25176061
Type	MPFI marine + automotive
Connector	Mini (Delphi Multec II)
Published flow	398 cc/min @ 3 bar
	38.9 lb/hr
Published impedance	12.0 Ω

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Our measured results

These are the actual before-and-after numbers from our flow bench for the Delphi 25176061 — not published estimates.

Tested in our shop	8 injector(s) @ 40.0 psi
Measured coil (avg)	12.45 Ω
10s open flow (avg)	63.5 → 65.0 ml (+2.4%)
60s pulsed flow (avg)	57.38 → 55.88 ml
Leak test after cleaning	8/8 PASS

Also known as / cross-references

The Delphi 25176061 is interchangeable with or cross-references to these part numbers:

1711373925348180

What vehicles use the Delphi 25176061?

Mercury MerCruiser 8.1L MPI: 496 MAG, 496 HO, 8.1S MPI, 8.1L HO; also GM Vortec 4.8L/5.3L/6.0L/8.1L (1999-2007)

How we service it

Every injector gets ultrasonic cleaning, backflushing, before-and-after flow testing (static and dynamic), leak testing, spray-pattern inspection, and new O-rings and micro-filter baskets where available — plus a detailed Injector Performance Report. Round-trip USPS shipping is $15 flat.

Frequently asked questions

What vehicles use the Delphi 25176061 injector?

The Delphi 25176061 is used in Mercury MerCruiser 8.1L MPI: 496 MAG, 496 HO, 8.1S MPI, 8.1L HO; also GM Vortec 4.8L/5.3L/6.0L/8.1L (1999-2007).

Can you clean and test a 25176061 injector?

Yes. We ultrasonic-clean, backflush, and flow-test the Delphi 25176061 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 25176061 flow at?

On our bench, 8 25176061 injectors averaged 63.5 ml open flow before cleaning and 65.0 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, 4-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 25176061 injectors

Mail-in cleaning and flow testing with a full before/after report. 4-injector minimum, $15 flat round-trip shipping.

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