Mack Crankcase Breathers

Carquest crankcase ventilation filters reduce blow-by, which is generated by combustion gases leaking past piston rings, producing oil droplets that would otherwise increase emissions.

Product Features:

• Designed to meet or exceed OE filter performance levels over the entire OE recommended service interval.

Carquest crankcase ventilation filters reduce blow-by, which is generated by combustion gases leaking past piston rings, producing oil droplets that would otherwise increase emissions.

Product Features:

• Designed to meet or exceed OE filter performance levels over the entire OE recommended service interval.

This engine crankcase breather element is designed to match the fit and function of the original filter on specified vehicles. It is engineered to restore proper breather performance when a breather filter is missing, cracked, or clogged.

Product Features:

• Direct replacement – this engine crankcase breather element is designed to match the fit and function of the original filter on specified vehicles
• ideal solution – engineered to restore proper breather performance when a breather filter is missing, cracked, or clogged
• Durable construction – designed and manufactured to strict specifications for reliable performance
• Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience

This crankcase breather repair kit directly replaces the crankcase breather element on specific vehicles. It features the exact fit, function and performance as the factory part, and can potentially save you time and money if the OEM dealership only has the complete breather assembly, forcing you to also buy the lower aluminum housing, even if that isn’t the failure point. The separator can fail on its own, either by clogging, cracking, or having a separator bearing fail from age and wear, which is indicated by noise and vibration. Excessive oil mist from the gas outlet can also be a failed separator symptom. When any of those failures occur, you can replace the separator with this kit, reducing part costs and install time by not having to replace the lower housing on the engine block.

Product Features:

• OEM quality – this replacement crankcase breather element matches the fit, function and performance of the original oil separator on specific vehicles for a trustworthy fix
• Saves time and money – many dealerships only stock this oil separator as part of the complete assembly with the lower housing; replacing only the failed element saves money and installation time
• Effective design – engineered and manufactured to efficiently and effectively filter blow-by gases, clearing DTCs, reducing contaminants, and restoring proper engine function
• Install tip – to ensure a tight, effective connection, be sure to clean the sealing surfaces on the lower housing where the seals are seated, before installing the new separator

Carquest air breathers prevent contamination and water created from fluctuations in the reservoir from entering the system, ensuring proper equipment operation and helping to prevent premature parts wear.

Product Features:

• Designed to meet or exceed OE filter performance levels over the entire OE recommended service interval.