Police found 16 wraps of what is believed to be class A drugs when they stopped a vehicle heading to Harrogate from West Yorkshire.
Officers also found three mobile phones and £350 of cash.
The driver, a 30-year-old man from West Yorkshire, was arrested on suspicion of possession with intent to supply a class A-drug but later released while enquiries continue.
North Yorkshire Police revealed the details today in an update on a ‘week of intensification’ into tackling county lines drugs, which refers to organised criminal groups moving and supplying drugs, usually from cities into smaller towns and rural areas.

An operation support unit officer ready to conduct a warrant.
Harrogate’s affluent population is often targeted by dealers in Bradford and Leeds.
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The force said it has arrested 17 people and safeguarded vulnerable people during the week of targeted action, which was part of a national campaign from March 7 to 13.
Police also executed warrants at addresses linked to drugs and carried out several safeguarding visits to help prevent ‘cuckooing’ taking place.
This is when county lines dealers take over the home of a vulnerable person for a short time while they carry out their activities before returning to their town or city.

Police sniffer dogs search for drugs.
Detective Chief Inspector Lorraine Crossman-Smith, who coordinated the week of activity in North Yorkshire, said:
“Whilst we work all year to take drugs off the streets of North Yorkshire this week of intensification has brought some substantial results. By disrupting supply lines and taking those involved out of circulation we can make North Yorkshire’s communities safer.
“We can only do this with the support and information that we get from residents so I would urge anyone with information about drug dealing in their community to call us on 101, we treat every piece of information as important.”