Mercruiser 7.4L 454 Big Block MPI Fuel Injector Cleaning & Flow Testing

The Bosch 802632T is a MPFI marine fuel injector used in Mercury MerCruiser 7.4L MPI (454 big block): 7.4L Alpha MPI, 7.4L Bravo MPI, 7.4L Horizon MPI, 7.4L MX MPI (1993-2002); Volvo Penta 7.4GiE, 7.4GSiE sterndrive. 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	Bosch
Part number	802632T
Type	MPFI marine
Connector	EV1 (Jetronic, all-plastic Gen III body, 4-hole disc nozzle)
Published flow	267 cc/min @ 3 bar
	25.4 lb/hr
Published impedance	14.3 Ω

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Our measured results

These are the actual before-and-after numbers from our flow bench for the Bosch 802632T — not published estimates.

Tested in our shop	8 injector(s) @ 40.0 psi
Measured coil (avg)	12.49 Ω
10s open flow (avg)	26.71 → 46.5 ml (+74.1%)
60s pulsed flow (avg)	38.0 → 44.38 ml
Leak test after cleaning	5/8 PASS

Also known as / cross-references

The Bosch 802632T is interchangeable with or cross-references to these part numbers:

25180245 (GM)19244617 (GM OEM)3854518 (Volvo Penta)0280150947 (Bosch)53030262 (Siemens)

What vehicles use the Bosch 802632T?

Mercury MerCruiser 7.4L MPI (454 big block): 7.4L Alpha MPI, 7.4L Bravo MPI, 7.4L Horizon MPI, 7.4L MX MPI (1993-2002); Volvo Penta 7.4GiE, 7.4GSiE sterndrive

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 Bosch 802632T injector?

The Bosch 802632T is used in Mercury MerCruiser 7.4L MPI (454 big block): 7.4L Alpha MPI, 7.4L Bravo MPI, 7.4L Horizon MPI, 7.4L MX MPI (1993-2002); Volvo Penta 7.4GiE, 7.4GSiE sterndrive.

Can you clean and test a 802632T injector?

Yes. We ultrasonic-clean, backflush, and flow-test the Bosch 802632T 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 802632T flow at?

On our bench, 8 802632T injectors averaged 26.71 ml open flow before cleaning and 46.5 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 802632T 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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