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Moroso 25900 2-Stage Crankcase Evacuation System

Manufacturer

Picture for manufacturer Moroso

Part Number

25900
5 reviews
Sale Price

$103.51

In Stock (5)

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Moroso 25900 is a complete 2-stage crankcase evacuation system designed to reduce crankcase pressure and improve engine performance. This comprehensive Vac-U-Pan system uses exhaust scavenging to create vacuum in the crankcase, which helps reduce windage losses, minimize oil leaks, and improve ring seal for increased horsepower.

Complete System Includes:

  • Two oil separators/breathers for efficient oil vapor separation
  • Filler cap for valve cover installation
  • Grommets for secure mounting
  • One-way check valve to prevent backflow
  • Weld-in nipple for header collector integration

This 2-stage design provides superior crankcase evacuation compared to single-stage systems, making it ideal for high-performance racing engines where maximum vacuum and oil control are critical. The system connects to your exhaust collector to harness exhaust flow energy for consistent vacuum generation throughout the RPM range.

Products specifications

Breather Finish

Gold iridited

Breather Material

Steel

Check Valve Finish

Gold iridited

Check Valve Material

Steel

Check Valves Included

Yes

Evacuation Hose Included

No

Grommet Material

Rubber

Grommet Material (descriptive)

Rubber

Notes

Cannot be be used on vehicles with mufflers.

Quantity

Sold as a kit.

Valve Cover Breather Included

Yes

Valve Cover Breathers Included

Yes

Valve Cover Grommets Included

Yes

Weld-In Nipples for Header Included

Yes

Real easy to use

Very competitive price, responsive customer service, very satisfied.

Best price I could find. It was delivered just when I needed it. Thank you !

Wow that was fast. I ordered a Pertronix Ignitor conversion kit. Not only were they by far the lowest price I could find, they shipped within hours of submitting the order. I got the shipment in less than 24 hrs, even though I ordered ground shipping. I was a little bummed that they did not offer free shipping, as I am used to with other online places, but with their fast turnaround, I am not begrudging it. Sure it might have been because they have a warehouse nearby, but it was still unexpectedly impressive. The part arrived and looks like it all there and should be good to go. <br><br>I can't vouch for their customer service, but so far I am pleasantly surprised.

Fast -regular- shipping even on large items. I was skeptical at first but I am happy and don't regret my purchase!!!

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