GM LS2 6.0L (Corvette, GTO, CTS-V, TrailBlazer SS) Fuel Injector Cleaning & Flow Testing

The Bosch 12569113 is a MPFI (port injection) fuel injector used in GM LS2 6.0L V8: Chevrolet Corvette C6 (2005-2007), Pontiac GTO (2005-2006), Cadillac CTS-V (2006-2007), Chevrolet TrailBlazer SS (2006-2009); 48.5mm O-ring length (medium). 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	12569113
Type	MPFI (port injection)
Connector	EV14 / USCAR
Published flow	360 cc/min @ 4 bar
	33.9 lb/hr

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Our measured results

These are the actual before-and-after numbers from our flow bench for the Bosch 12569113 — not published estimates.

Tested in our shop	8 injector(s) @ 40.0 psi
Measured coil (avg)	12.57 Ω
10s open flow (avg)	49.88 → 50.25 ml (+0.7%)
60s pulsed flow (avg)	52.62 → 53.38 ml
Leak test after cleaning	8/8 PASS

Also known as / cross-references

The Bosch 12569113 is interchangeable with or cross-references to these part numbers:

0280158049 (Bosch)

What vehicles use the Bosch 12569113?

GM LS2 6.0L V8: Chevrolet Corvette C6 (2005-2007), Pontiac GTO (2005-2006), Cadillac CTS-V (2006-2007), Chevrolet TrailBlazer SS (2006-2009); 48.5mm O-ring length (medium)

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 12569113 injector?

The Bosch 12569113 is used in GM LS2 6.0L V8: Chevrolet Corvette C6 (2005-2007), Pontiac GTO (2005-2006), Cadillac CTS-V (2006-2007), Chevrolet TrailBlazer SS (2006-2009); 48.5mm O-ring length (medium).

Can you clean and test a 12569113 injector?

Yes. We ultrasonic-clean, backflush, and flow-test the Bosch 12569113 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 12569113 flow at?

On our bench, 8 12569113 injectors averaged 49.88 ml open flow before cleaning and 50.25 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 12569113 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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