Crankcase Breather Filter CV52001 Replacement - Durable Fit
Crankcase Breather Filter CV52001 Replacement - Durable Fit
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In this review the 2PCS CV52001 crankcase breather element is assessed for technicians and truck owners who need a reliable, direct-fit replacement for heavy-duty engines. The bottom line: it is a straightforward, affordable replacement that matches the OEM reference numbers and performs the essential job of equalizing crankcase pressure. Installers will appreciate that it is plug-and-play with no electrical changes required, and fleet operators will like the value and clear fitment notes for Freightliner, International and several Dodge and Ford applications.
Key Features
- OEM compatibility: Replaces multiple factory numbers so buyers can match the correct part without hunting for obscure codes, reducing downtime.
- Wide fitment: Fits many Freightliner XB/XC rails and International models as well as Cummins-equipped Dodge and Ford, simplifying stocking for fleets.
- Crankcase function: Manages and equalizes crankcase pressure during engine operation, protecting seals and reducing blow-by related issues.
- Installation: Plug-and-play direct fitment requires no electrical modifications, allowing quick swapouts during routine service.
- Warranty and support: Backed by a 12-month warranty and lifetime technical service from the seller, providing peace of mind for professional use.
Who It's For
This part is best for professional mechanics, fleet maintenance managers, and owner-operators running 6.7L Cummins engines in Dodge Ram 2500/3500/4500/5500 or heavy chassis trucks where the listed OEM numbers are referenced. It is also well suited to shops that service Freightliner XB/XC rails and International 4300/7300 series vehicles and want a single replacement to cover several applications.
Those who should look elsewhere include owners who need a non-standard custom breather or who require a manufacturer-specific branded OEM unit for warranty reasons; this aftermarket element is intended as a high-quality replacement rather than an original parts dealer item.
Pros & Cons
Pros
- Direct-fit replacement for many OEM numbers, which makes sourcing and installation simpler.
- Affordable option that customers report fits well and performs as expected.
- Plug-and-play installation with no electrical changes required, saving labor time.
Cons
- Aftermarket part may not satisfy buyers who require original dealer-branded components for factory warranty continuity.
Specifications
| Brand | AULDAY |
| Replaces | CV52001, 68002433AA/AB/AC, 4936636, 5263190, 904-418 |
| Compatible Engines | Cummins 6.7L (applications listed) |
| Fitment Vehicles | Dodge Ram 2500/3500/4000/4500/5500, Freightliner XB/XC rails, International 4300/7300/MV607 |
| Package Quantity | 2 pieces |
| Warranty | 12-month warranty and lifetime technical service |
Our Verdict
The 2PCS CV52001 breather element is a practical, cost-effective replacement for shops and truck owners who need a reliable crankcase breather across multiple heavy-duty platforms. It delivers the essential function of equalizing crankcase pressure, matches common OEM numbers for easy cross-referencing, and installs without complications, making it a smart value buy for maintenance-focused buyers.
Frequently Asked Questions
Does this filter require electrical modifications?
No, the filter is plug-and-play and requires no changes to the electrical system.
Which vehicles does it fit?
It fits Dodge Ram 6.7L applications and several Freightliner XB/XC rails plus International 4300/7300/MV607 models as listed in the fitment notes.
Is there a warranty or support?
Yes, the seller provides a 12-month warranty and lifetime technical service for support.
Editor's Take
A practical, cost-effective direct-fit replacement that equalizes crankcase pressure and matches common OEM numbers; ideal for shops and fleet maintenance due to ease of installation and broad fitment.

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