Cummins Crankcase Filters

Fleetguard CV50634 Crankcase Ventilation Filter

A coalescer element assembly listed for 2010 Cummins ISX and ISM engines. Fit depends on the build, the breather arrangement and the number on the old element.

Part number: CV50634
Type: Coalescer element assembly
Engine reference: 2010 Cummins ISX and ISM

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What the Fleetguard CV50634 Crankcase Ventilation Filter Is

The CV50634 is a rectangular coalescer element that seats into the crankcase ventilation housing. It separates oil mist from blow-by so oil drains back and gas leaves the crankcase. Listings describe two attached perimeter seals.

The system label isn’t settled. Cummins-side listings describe open crankcase ventilation (OCV); many resellers call the same element a CCV filter. Those are different venting arrangements, so confirm which one your engine uses.

Engine model & build
Provide the engine maker, model and full serial or build number. The model name alone does not confirm fitment.
Venting arrangement: OCV or CCV
Confirm whether the engine uses open crankcase ventilation or a closed crankcase ventilation system. The same element is sold under both labels, but the housing must match.
Complete old part number
Send the full number printed on the removed element, including any suffix. If the records disagree, send all of them for review.

CV50634 Specifications

We publish only the fields that agree across listings. Dimensions, weight and efficiency figures conflict between sellers, so they are withheld and confirmed against the manufacturer specification for your build. Not sure which number you have? Send the old element details for checking.

CV50634 interface fields and confirmation methods
Check	Value to compare	How to confirm
Element type	Crankcase ventilation coalescer element assembly	Match the old element
Housing	Not included	Reuse the existing housing
Seals	Two attached perimeter gaskets, as listed	Inspect the offered item
System	OCV on Cummins-side listings; CCV on many reseller pages	Confirm the breather arrangement
Envelope	Not published; listings conflict	Confirmed per quotation
Engine-maker number	4312013 most cited; 4312011 and 3685528 also appear	Check the build record
Media and rating	Not published	Confirmed per specification

Swipe horizontally to view all columns.

CV50634 Cross-References Are Candidates, Not Confirmations

Candidate cross-references for CV50634, requiring verification
Brand	Candidate reference
Cummins	4312013, 4312011, 3685528, 3683918, 3691687, 3691476
Baldwin	CV15000
WIX	WS10124
Dorman	904-7904
NAPA	220124
Carquest	99340
Fleetguard	CV50617, CV50633

Lists differ between sellers, and the Cummins numbers are assigned differently from one list to the next. A cross-reference is a shortlist, not a statement of equivalence. Verify a number with the filter lookup; quality control covers pre-shipment checks.

Similar numbers.
Different parts.

CV50617 — the earlier reference. Fleetguard-side listings state CV50634 replaces it. Treat that as a supersession to confirm, not a guarantee.

CV50633 — an earlier revision in the same family. One reseller states that upgrading to CV50634 requires the CV50638 retrofit kit, which suggests the housing or regulator may differ.

CV50634 — the later reference, listed for 2010 ISX and ISM. Order the number you can evidence; accept a substitution only when the quotation names it.

CV50626-MF is a different element, listed for Cummins ISX12 and X12 applications, with a different element shape and housing. It is not an alternative to CV50634. If your engine is an ISX12 or X12, send the build record and old number; the families are confirmed separately.

Applications, and How a CV50634 Order Is Quoted

Start with the engine, not the seller’s list.

Cummins ISX 15.0 / ISM

Applications are engine-led: trucks, buses, motorhomes, generator sets and plant. Some fitment databases also list ISB and ISC; confirm those on the engine’s own record, not a seller’s list.

ISB and ISC listings need the engine’s own record, not a reseller’s catalogue.

Know exactly what is being quoted.

We check each line against the parts record and breather arrangement, then state the offered item, maker, complete number, quantity and delivery terms.

No real-time stock feed is published. Send a multi-engine parts list if this is one line of several.

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Frequently Asked Questions

Is CV50634 an open or closed crankcase ventilation filter?

Sources disagree. Cummins-side listings call it OCV; many resellers call the same element a CCV filter. Confirm the breather arrangement and old number before choosing a label.

What is the difference between CV50633 and CV50634?

Earlier and later references in the same family. Upgrading a CV50633 installation is reported to need the CV50638 retrofit kit, so confirm the housing before substituting.

Does CV50634 replace CV50617?

Fleetguard-side listings say it does. Treat that as a supersession to confirm against the build record, not proof that the earlier element will simply interchange.

What Cummins number matches CV50634?

4312013 is most often cited. 4312011 and 3685528 also appear, so check the build record rather than choosing from a list.

Is CV50634 just the element, or the complete housing?

The service element assembly. The housing and any additional gasket kit are separate. Reuse the housing and confirm the seals.

Confirm the breather arrangement. Then confirm the number.

Send the engine model, build number, breather arrangement and the number printed on the old element.
We will confirm the offered item, maker, complete number and terms.

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