Fahy's late show books September double-bill
Galway 1-12 Kilkenny 2-8
Enda Fahy was Galway's stoppage-time hero as the county's minors ensured they'll join the seniors on an All-Ireland final double-bill.
Fahy struck in the third minute of stoppage-time to send Jeffrey Lynskey's Tribesmen into a September 3 decider with Cork or Dublin.
Galway moved within touching distance of a second title in three seasons and while super-sub Fahy banged over the late winner, captain Darren Morrissey was the Man of the Match award recipient.
Kilkenny skipper Adrian Mullen had blasted 3-38 in the Leinster series, but met his match in Morrissey, who performed an exceptional man-marking job. Mullen was held to four points, and just the one from play, as Galway edged home.
Galway also had a 1-4 haul from Jack Canning, nephew of senior match-winner Joe, including a crucial penalty goal to cancel out Kilkenny's second major two minutes previously.
Galway also survived an awful call with four minutes left, when the umpire at the Hill 16 end handed Kilkenny a '65' after Evan Cody had clearly knocked the ball wide. Mullen converted and Kilkenny were a point ahead - 2-8 to 1-10 - with time running out.
Galway, though, had the answers; Donal Mannion levelling it up before Kilkenny suffered a real blow when Conor Heary was sent off for a second yellow.
The young Tribesmen had the wherewithal to carve out a winner, as Fahy kept his nerve to slot over the decisive score.
Kilkenny had led by 1-6 to 0-6 at half-time - as Jim Ryan's third-minute goal separated the sides.
Mullen went close to a Kilkenny goal eight minutes before the break, but Galway goalkeeper Darach Fahy did well to keep out the Ballyhale youngster.
A generally disappointing first-half was followed by a better second period, as weather conditions improved slightly.
Kilkenny's second goal - scored by Cody in the 37th minute - had Kilkenny 2-6 to 0-8 clear, but Galway hit back through Canning's 39th-minute penalty, after Mannion was taken down.
Seán Bleahane was another crucial player down the home straight, as Galway held their nerve.
Scorers - Galway: J Canning 1-4 (1-0 pen), S Bleahane 0-3, C Walsh 0-2f, C Molloy, D Mannion & E Fahy 0-1 each. Kilkenny: E Cody 1-1, A Mullen 0-4 (2f, 1 65), J Ryan 1-0, C Flynn, N Brassil & E O'Shea 0-1 each.
Galway: D Fahy, C Killeen, D Loftus, D Morrissey; R Glennon, C Caulfield, M Gill; C Fahey, J Fleming; M McManus, C Walsh, B Moran; S Bleahane, C Molloy, J Canning. Subs: S Ryan for Fleming (35), D Mannion for Molloy (35), C Elwood for Moran (47), E Fahy for McManus (52).
Kilkenny: D Mason; T Ronan, M Carey, D Walsh; J Brennan, C Flynn, J Molloy; J Dowd, N Brassil; E O'Shea, C Heary, J Ryan; E Cody, A Mullen, S Ryan. Subs: N Brennan for N Brassil (temp 7-10), D Barron for S Ryan (49), J Kelly for O'Shea (52), N Brennan for J Ryan (57).
Ref - J Murphy (Limerick)