Request a quote
Get a Quote for Engine Filters
Email and phone are required. Leave anything you don't know blank.
Menu
Menu
Perkins Crankcase Breather Filters
A Perkins crankcase breather filter separates oil mist from blow-by gas, and the system it serves is open or closed crankcase ventilation. Which element your build takes depends on that system, the engine, and the complete number — not on the model name alone. Unlike a fuel or air filter, the breather element strips oil mist and returns oil to the sump; it is not a particle filter. This page covers Perkins crankcase breather filters for generator sets, plant, agricultural, and industrial duty.
Request a Breather Filter Quote →
Browse Perkins Crankcase Breather Filters
Two crankcase breather filter references currently listed. Confirm the engine build, the installed ventilation system, and the complete number before ordering.
What This Page Covers — and What It Does Not
This page covers crankcase ventilation filtration for Perkins applications: the open and closed systems, the pressure failure mode, and the emission-related angle. The rest of the range sits under the Perkins filter range, and the breather element is part of a complete Perkins filter kit.
What This Page Covers
- Crankcase ventilation
- Open systems
- Closed systems
- Pressure failure mode
- Emission-related angle
- Breather elements
What This Page Does Not Cover
This is not a stock list, a price list, or a fitment certificate. Specific crankcase breather filter pages follow once each number is verified. Scope note: Engine-service crankcase ventilation for Perkins-powered equipment. Perkins is an engine application and original reference name only. Confirm the engine build, the ventilation system, the complete part number, and the installed housing before ordering.
Availability is confirmed in the quotation. The offered item also needs confirmation.
Confirm the
Engine Build
Engine Build
The engine model narrows the search. The serial or build number, the installed housing, and the full reference determine what needs to be checked. With the build and the old element’s number, request a quote.
Open or Closed Crankcase Ventilation?
Blow-by gas leaves the crankcase carrying oil mist. The breather element coalesces the mist and returns the oil to the sump; what happens to the cleaned gas next depends on the system.
| System | What Happens to the Gas | What it Means for the Element |
|---|---|---|
| Open crankcase ventilation | Gas vents to atmosphere. | Simpler arrangement; the element strips oil mist before venting. |
| Closed crankcase ventilation | Cleaned gas returns to the intake. | The element must protect the induction and aftertreatment from oil carryover. |
The system decides the element’s job and its failure mode, so confirm the system before the number. A breather element sized for an open system does not do the same work on a closed one, and the breather housing may be supplied by the equipment packager rather than the engine maker. Order the element as part of a complete Perkins filter kit only after the system is known.
What a Clogged Breather Actually Does
A clogged breather does not simply restrict flow — it pressurizes the crankcase. The symptom is oil leaks and seal failures, not reduced intake flow.
Crankcase Pressurization
The symptom is oil leaks and seal failures, not reduced intake flow. Left unchecked, this pressure forces oil past seals and gaskets.
Check Crankcase Pressure →Induction & Aftertreatment Risk
Excess oil can enter the induction or aftertreatment system and, in the worst case, cause uncontrolled engine speed.
Check Oil Carryover →Cold-weather
icing warning
icing warning
- Cold-climate kit may apply
- Not a cleaning service
- No blow-by diagnosis over the page
- Check maker and complete number
Six Records to Confirm Before You Order a Perkins Crankcase Breather Filter
Have these details ready when you request a quote, whether you need a single element or a complete service set.
Include These Six Details
Engine identification
Provide the engine maker, model, and the full serial or build number. The model badge alone does not identify every breather arrangement.
Ventilation system
Confirm whether the build runs open or closed crankcase ventilation. The system dictates the element’s job.
Complete part number
Copy the complete number printed on the element being replaced, including every prefix and suffix.
Breather housing
Provide the breather housing or canister make and model, if known — the housing may be packager-supplied.
Symptom context
Share any symptom context — oil leaks, elevated blow-by, or a service due — to confirm the element, not the diagnosis.
Quantity and route
State whether you need a single element or a fleet list, and whether a genuine original item or an alternative is required.
Where Perkins Crankcase Breather Filter Fitment Goes Wrong
Similar appearance and familiar references can hide a different application. Review these common mix-ups before confirming an order.
Ordering for the Wrong System
An element for an open system does not do the job on a closed one. The required element changes based on the crankcase ventilation setup.
Check the systemConfirm open or closed ventilation before matching the number.
Treating the Breather Like a Dust Filter
The breather element coalesces oil mist; it is not a particle filter. A wrong-media element changes the separation behaviour.
Check the mediaConfirm the element is designed for oil mist, not dust.
Matching the Number to the Engine, Not the Housing
The breather housing may be packager-supplied rather than from the engine maker. The installed housing decides the element.
Check the housingMatch the complete number to the housing, not just the engine model.
Reading One Interval Off the Wrong Series
Breather service schedules vary by engine series, and duty and blow-by move them. The wrong interval leads to premature replacement or failure.
Check the seriesUse the correct service schedule for your specific engine.
Quoting an Incomplete Number
A dropped suffix can deliver the wrong element or the wrong seal kit. Quote the complete number from the removed unit, including every character.
Check both referencesWhere a number has changed, keep the old and current references.
Frequently Asked Questions
What is a Perkins crankcase breather filter?
A crankcase breather filter is the element that separates oil mist from blow-by gas before the gas vents or returns to the intake. It is an emission-related component, not a dust filter.
What is the difference between open and closed crankcase ventilation?
Open ventilation vents the gas to atmosphere; closed ventilation returns cleaned gas to the intake. The system decides the element’s job and its failure mode.
What happens when a crankcase breather filter is clogged?
The crankcase pressurizes, causing oil leaks and seal failures. Unchecked, oil carryover into the induction or aftertreatment system can cause uncontrolled engine speed.
How often should a Perkins crankcase breather filter be changed?
The interval is system-, duty-, and condition-dependent and varies by engine series. Confirm against the machine’s maintenance schedule for the serial, not a single number.
Why does my Perkins crankcase breather number not match the cross-reference chart?
Usually one of three: a supersession, an open-versus-closed system variation, or a housing supplied by a different packager. Send both numbers with the engine serial.
Confirm the System, Then the Number
A Perkins crankcase breather filter is quoted against a ventilation system, a housing, and a complete number, in that order. Identify whether the build runs open or closed ventilation, treat a clogged breather as a pressure problem, and confirm the number against the installed housing. Send the engine serial or build number, whether the build runs open or closed ventilation, the complete number on the element, the housing make if you know it, and whether you need a genuine original or an alternative. We will confirm the item and the delivery terms line by line.
Request a Perkins Crankcase Breather Filter Quote →