East Fife survived a second-half Stenhousemuir fightback to move above the visitors into a play-off spot.
Robert Barr gave the Fifers a dream start when he collected Scott McBride's header down to blast an unstoppable effort into the top corner from 30 yards.
Steven Campbell doubled the advantage with 32 minutes played when he headed home Jamie Pollock's cross from close range.
Stewart Kean steered Bryan Hodge's corner over the line 12 minutes after half-time to hand Stenhousemuir a lifeline and a set-piece from the same player allowed Andrew Rodgers to level matters in the 69th minute.
But two minutes later, McBride headed Paul Willis' cross from the left past Callum Reidford in the Warriors goal to move East Fife above their opponents and into the final play-off spot.
East Fife: Antell, Durie, White, Campbell, Johnstone, Robert Barr (Sloan 67), Muir, Willis, Pollock, McBride, Samuel. Subs Not Used: Collier, Jamieson, Ross Brown, Malcolm.
Goals: Robert Barr 5, Campbell 32, McBride 71.
Stenhousemuir: Reidford, Ross (Rodgers 67), Buist, Iain Thomson, Dickson, Ferguson (Duncan 85), Hodge, Brash, Craig Anderson (Kieran Anderson 88), Smith, Kean. Subs Not Used: Farley, Lawson.
Booked: Brash, Iain Thomson.
Goals: Kean 57, Rodgers 69.
Ref: Crawford Allan (Scotland).