crank·​case | \ ˈkraŋk-ˌkās How to pronounce crankcase (audio) \

Definition of crankcase

: the housing of a crankshaft

Examples of crankcase in a Sentence

Recent Examples on the Web The block has what GM calls a dedicated lower crankcase. Tony Quiroga, Car and Driver, 26 Oct. 2021 Finished in green, the heavy chassis classic features an aluminum crankcase and an extra-long bonnet just like the racing models of the 20th century. Rachel Cormack, Robb Report, 6 Aug. 2021 Featuring such innovations as a 16-valve cylinder head, twin-spark ignition, aluminium pistons, and a magnesium crankcase, the Blower's 4.4-liter four was one of the most powerful in the world at that time, making 240 horsepower in race trim. Mike Duff, Car and Driver, 21 Apr. 2021 Some emissions control systems also rely on this negative pressure to prevent crankcase fumes from escaping. Mike Allen, Popular Mechanics, 2 Oct. 2020 People in four-wheeled vehicles — at least some of them — were hotter than a crankcase. Steve Rubenstein,, 23 Sep. 2020 If your crankcase is overfilled, have the excess drained. Motormouth Bob Weber, Star Tribune, 14 Aug. 2020 An engine's key internal components should always have a thin coating of oil to keep them lubricated and protected; as your vehicle sits, gravity slowly pulls the oil down to the crankcase. Maxwell B. Mortimer, Car and Driver, 10 Apr. 2020 But overfilling the crankcase by 1 quart is not likely to cause any problem whatsoever. Ray Magliozzi,, 6 Oct. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'crankcase.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of crankcase

circa 1878, in the meaning defined above

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Time Traveler for crankcase

Time Traveler

The first known use of crankcase was circa 1878

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Dictionary Entries Near crankcase

crank brace



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Statistics for crankcase

Last Updated

1 Nov 2021

Cite this Entry

“Crankcase.” Dictionary, Merriam-Webster, Accessed 9 Dec. 2021.

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English Language Learners Definition of crankcase

: the part of an engine that contains the crankshaft

More from Merriam-Webster on crankcase Encyclopedia article about crankcase


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