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Moroso 25900 Crankcase Evacuation System

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Moroso 25900 Crankcase Evacuation System
Moroso

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#54525900

Moroso 25900 Crankcase Evacuation System

  • Made from durable steel with a zinc finish for added corrosion resistance
  • It reduces crankcase pressure throughout entire rpm range for increased piston ring seal
  • Will also reduce intake charge contamination and has fewer oil leaks
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$103.99

/each

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$114.26

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Product Summary

0.68" Hole Diameter, Push-in Attachment Style, Steel

  • Made from durable steel with a zinc finish for added corrosion resistance
  • It reduces crankcase pressure throughout entire rpm range for increased piston ring seal
  • Will also reduce intake charge contamination and has fewer oil leaks
  • The track and dyno tests prove that it increases engine performance
  • Has a 3.06" overall diameter and a .68" hole diameter
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Key Specs

MFG. Part #25900
Attachment StylePush-in
Valve Cover Hole Size0.625"
Material TypeSteel
FinishZinc Plated
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Moroso 25900 Details

Evac System Reduces crankcase pressure throughout entire rpm range for increased piston ring seal, reduced intake charge contamination and fewer oil leaks. Track and dyno tests prove increases in engine performance. Welding required. Cannot be used on cars w/ mufflers.

Moroso 25900 Crankcase Evacuation System Includes 2 each: Oil Separators/Breathers, Breather/Filler Cap Grommets, One-Way Check Valve and Weld-In Nipple for header collector, use with 5/8” diameter hose.

 

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Moroso 25900 Specifications

KEY SPECS
MFG. Part #25900
BrandMoroso
Attachment StylePush-in
Valve Cover Hole Size0.625"
Material TypeSteel
FinishZinc Plated
GENERAL
Mounted Height2.50"
Hole Diameter0.68"
GTIN Code084663259005
Sold in QuantityKit
Overall Diameter3.06"

Ratings & Reviews

4

7 Reviews

Overall Assessment

Customers praise the product for its outstanding features and confirmed qualities. It is highly regarded for its great system, easy installation, and simplicity. Users particularly mention its practical usage in drag race and oval track applications and its effective prevention of oil leaks. Though some had issues with a faulty valve, many were satisfied with the efficiency of the one-way valve, while underscoring the need to order a hose together with the kit. The product's construction was seen as comprehensive and devoid of unnecessary extras, although customers expressed minor disappointment in the product being made in Taiwan. Despite this, customers generally recommend the product and would buy it again.

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4

7 reviews

5

4

4

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2

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Yes

4.0

a year ago

Turtle

Ct.

Verified

Don't know yet

Would Recommend

would buy again

5.0

9 years ago

hank

Medora il

Verified

B-mod

Would Recommend

system

5.0

9 years ago

ole

sf sd

Verified

works great

Would Recommend

Great system thats easy to install

5.0

9 years ago

Grampa Kurt

NE Wisconsin

Verified

I have used several of these over the years on both drag race and oval track applications. Drawing a vacuum inside the crankcase has really prevented oil leaks for me. Highly recommend!

Would Recommend

one of the valves were bad

1.0

11 years ago

mark

delta ut

Verified

one of the valves were bad post to be a one-way valve which were a 2 Way valve cause a lot of headache and caused a lot of problems

Would Not Recommend

Simple and Complete

5.0

14 years ago

FalconRacer

Muskogee, OK

Verified

Simple and complete kit. No frills just what is needed. Remember to order hose when purchasing.

Would Recommend

Taiwan

3.0

15 years ago

racer56

san antonio,texas

Verified

love speedway motors,just a little disappointed the moroso crankcase evacuation system I ordered had "made in Taiwan" on breathers.

Showing 7 of 7 reviews

Questions & Answers

2 Questions • 2 Answers

How are the breathers/oil separators emptied of oil? Can this system be used in a water cooled boat exhaust collector?

by Jay

• 10 years ago

1 answer

View Answer

what type of hose do you use with this crankcase evacuation system?

by 43lmod

• 11 years ago

1 answer

View Answer

2 of 2 questions shown

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