Janos Kovacs marked his Hatters debut by putting them ahead at Histon
Luton Town moved to within a point of the Blue Square Premier play-off zone as they saw off troubled Histon to earn a third league win on the trot.
Hatters debutant defender Janos Kovacs dived to head in Kevin Nicholls' corner and set the visitors on their way.
And first-half sub Matt Barnes-Homer then helped set up midfielder Asa Hall for his fifth goal of the season.
Histon, booted out of the FA Trophy on Monday, remain 10 points clear of trouble after a second straight defeat.
It was only the third league game since 5 December for weather-hit Luton, who still have several games in hand on the play-off zone.
It could have been a different story if Nathaniel Knight-Percival's strike after just 21 seconds had not rebounded off the Luton bar.
And Histon fashioned another good chance when Andrew Tidswell headed wide from Gareth Gwillim's cross.
But the deadlock was broken five minutes after the break when giant Hungarian central defender Kovacs, signed after leaving Lincoln by mutual consent earlier this week, rose highest to head home Nicholls' corner.
And the visitors were given breathing space when Hall drilled a left-foot strike into the bottom-right corner.
Histon manager Alan Lewer told BBC Radio Cambridgeshire:
"For 45 minutes we worked hard to stop them playing and I thought we did well. But second half we got outplayed.
"They probably came here to nullify for 45 minutes and go on to win the game and, to be fair to them, they deserved to win it in the second half."
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