Dorman 996-1005 Engine Oil Separator

In stock
SKU: 591|9961005
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Not sure it fits? Message Year/Make/Model/Engine (2WD/4WD if applicable) and we’ll help confirm compatibility.
Why buy from Koskowski Automotive?
• 50+ years (since 1972) • Dorman Authorized Seller • Fast shipping • Easy returns
Regular price $803.48
Vehicle Fitment: Use the table below to match your exact configuration. If you don’t see your exact setup, message us before ordering.

Product details

  • SKU 591|9961005
  • Barcode #N/A

Product Description

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.

  • 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

Detailed Applications

Year Make Model Configuration Positions Application Notes
2022 Mack Anthem Engine Desg. MP7; EngineMfr Mack
2022 Mack Granite Engine Desg. MP7; EngineMfr Mack
2022 Mack LR Engine Desg. MP7; EngineMfr Mack
2022 Mack TerraPro Engine Desg. MP7; EngineMfr Mack
2022 Volvo VHD Engine Desg. D11; EngineMfr Volvo
2022 Volvo VNL Engine Desg. D11; EngineMfr Volvo
2022 Volvo VNR Engine Desg. D11; EngineMfr Volvo
2021 Mack Anthem Engine Desg. MP7; EngineMfr Mack
2021 Mack Granite Engine Desg. MP7; EngineMfr Mack
2021 Mack LR Engine Desg. MP7; EngineMfr Mack
2021 Mack TerraPro Engine Desg. MP7; EngineMfr Mack
2021 Volvo VAH Engine Desg. D11; EngineMfr Volvo
2021 Volvo VHD Engine Desg. D11; EngineMfr Volvo
2021 Volvo VNL Engine Desg. D11; EngineMfr Volvo
2021 Volvo VNR Engine Desg. D11; EngineMfr Volvo
2020 Mack Anthem Engine Desg. MP7; EngineMfr Mack
2020 Mack Granite Engine Desg. MP7; EngineMfr Mack
2020 Mack LR Engine Desg. MP7; EngineMfr Mack
2020 Mack TerraPro Engine Desg. MP7; EngineMfr Mack
2020 Volvo VAH Engine Desg. D11; EngineMfr Volvo
2020 Volvo VAH 300 (Mexico) Engine Desg. D11; EngineMfr Volvo
2020 Volvo VAH 400 (Mexico) Engine Desg. D11; EngineMfr Volvo
2020 Volvo VAH 640 (Mexico) Engine Desg. D11; EngineMfr Volvo
2020 Volvo VHD Engine Desg. D11; EngineMfr Volvo
2020 Volvo VNL Engine Desg. D11; EngineMfr Volvo
2020 Volvo VNL 300 (Mexico) Engine Desg. D11; EngineMfr Volvo
2020 Volvo VNL 400 (Mexico) Engine Desg. D11; EngineMfr Volvo
2020 Volvo VNL 740 (Mexico) Engine Desg. D11; EngineMfr Volvo
2020 Volvo VNL 760 (Mexico) Engine Desg. D11; EngineMfr Volvo
2020 Volvo VNL 860 (Mexico) Engine Desg. D11; EngineMfr Volvo
2020 Volvo VNR Engine Desg. D11; EngineMfr Volvo
2020 Volvo VNR 300 (Mexico) Engine Desg. D11; EngineMfr Volvo
2020 Volvo VNR 400 (Mexico) Engine Desg. D11; EngineMfr Volvo
2020 Volvo VNR 640 (Mexico) Engine Desg. D11; EngineMfr Volvo
2019 Mack Anthem Engine Desg. MP7; EngineMfr Mack
2019 Mack CXU Engine Desg. MP7; EngineMfr Mack
2019 Mack Granite Engine Desg. MP7; EngineMfr Mack
2019 Mack GU7 Engine Desg. MP7; EngineMfr Mack
2019 Mack GU8 Engine Desg. MP7; EngineMfr Mack
2019 Mack LR Engine Desg. MP7; EngineMfr Mack
2019 Mack LR600 Engine Desg. MP7; EngineMfr Mack
2019 Mack MRU Engine Desg. MP7; EngineMfr Mack
2019 Mack TerraPro Engine Desg. MP7; EngineMfr Mack
2019 Volvo VAH Engine Desg. D11; EngineMfr Volvo
2019 Volvo VHD Engine Desg. D11; EngineMfr Volvo
2019 Volvo VNL Engine Desg. D11; EngineMfr Volvo
2019 Volvo VNL 300 (Mexico) Engine Desg. D11; EngineMfr Volvo
2019 Volvo VNL 400 (Mexico) Engine Desg. D11; EngineMfr Volvo
2019 Volvo VNL 740 (Mexico) Engine Desg. D11; EngineMfr Volvo
2019 Volvo VNL 760 (Mexico) Engine Desg. D11; EngineMfr Volvo
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Product Specifications

Grade Type: Regular
Package Contents: 1 Crankcase Ventilation Filter
Port Length: 2.5 in
Port Outside Diameter: 1.424 in
Port Quantity: 1
Port Type: Flanged
Port Width: 0.841 in

OE Numbers

DIRECT OE CROSS
21679517 VOLVO
21975959 VOLVO
22999818 VOLVO
NON-DIRECT OE CROSS
21975949 VOLVO