Fuel injection units worth £11,000 were stolen from an agricultural business off the A1 near Grantham.
Burglars broke into the John Deere tractors compound at Sharman Agricultural Ltd, Gonerby Moor, over the Christmas/New Year period and made it away with 10 diesel fuel injection units from tractors on the site.
The burglary happened some time between Christmas Eve and Wednesday.
Lincolnshire Police is appealing for anyone with information about the theft or the whereabouts of the stolen items to contact them via the non-emergency 101 telephone number quoting incident number 107 of January 2. Alternatively, call Crimestoppers, anonymously, on 0800 555111.