Mopar Performance 46 lb/hr (Boosted Builds) Fuel Injector Cleaning & Flow Testing

The Siemens 4532586 is a MPFI (port injection, low impedance) fuel injector used in Chrysler / Mopar Performance applications (P4532586). Low-impedance high-flow injector, popular in boosted Mopar builds.. 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	Siemens
Part number	4532586
Type	MPFI (port injection, low impedance)
	46.5 lb/hr

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Our measured results

These are the actual before-and-after numbers from our flow bench for the Siemens 4532586 — not published estimates.

Tested in our shop	6 injector(s) @ 55.0 psi
Measured coil (avg)	2.78 Ω
10s open flow (avg)	93.17 → 94.0 ml (+0.9%)
60s pulsed flow (avg)	29.83 → 30.0 ml
Leak test after cleaning	6/6 PASS

Also known as / cross-references

The Siemens 4532586 is interchangeable with or cross-references to these part numbers:

Mopar P4532586

What vehicles use the Siemens 4532586?

Chrysler / Mopar Performance applications (P4532586). Low-impedance high-flow injector, popular in boosted Mopar builds.

How we service the Siemens 4532586

Every MPFI (port injection, low impedance) Siemens 4532586 we take in gets the full bench treatment, tested at 55 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 Siemens 4532586 injector?

The Siemens 4532586 is used in Chrysler / Mopar Performance applications (P4532586). Low-impedance high-flow injector, popular in boosted Mopar builds..

Can you clean and test a 4532586 injector?

Yes. We ultrasonic-clean, backflush, and flow-test the Siemens 4532586 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 4532586 flow at?

On our bench, 6 4532586 injectors averaged 93.17 ml open flow before cleaning and 94.0 ml after, tested at 55.0 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 4532586 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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