In the 30-minute session featuring the fastest six cars in each class, Kobayashi drew first blood by setting a lap of 3m23.900s on his first attempt, over a second quicker than stablemate Hartley in the #8 Toyota.
Olivier Pla was third fastest in the #708 Glickenhaus, a full 2.5 seconds in arrears but two seconds ahead of Nicolas Lapierre, who struggled on his first lap in the #36 Alpine A480.
However, the red flag soon came out when Kevin Estre, the fastest man in GTE all week, spun off and went into the wall at Indianapolis in his #92 Porsche 911 RSR-19.
After a brief interruption Kobayashi stayed just marginally above his benchmark, while Hartley moved within three tenths with laps of 3m24.230s and then 3m24.195s. Lapierre improved to move third with a 3m26.015s, which he followed up with a 3m25.574s.
Lapierre's lap was nearly four tenths faster than Pla's 3m25.996s, while Dumas was a distant fifth in the second #709 Glickenhaus entry.
In LMP2 Antonio Felix da Costa and Louis Deletraz initially traded the top spot, with Da Costa securing pole with a 3m27.950s lap in the #38 JOTA Oreca-Gibson, half a second up on Deletraz in the #41 WRT Oreca.
Will Stevens was third in the #65 Panis Racing Oreca, just one tenth behind Deletraz, followed by G-Drive's Nyck de Vries and United Autosports pair Nico Jamin and Paul Di Resta.
#72 Hub Auto Racing Porsche 911 RSR - 19 LMGTE Pro, Dries Vanthoor, Alvaro Parente, Maxime Martin
Photo by: Paul Foster
HubAuto takes shock GTE Pro pole
In GTE Pro the timing of Estre's off meant the remaining five cars had to wait until after the restart for their first flying laps, but it also meant the clear favourite for pole was out of contention.
Dries Vanthoor went fastest on the first run in the #72 HubAuto Porsche 911 RSR-19, his 3m46.882s two tenths quicker than Daniel Serra in the #52 AF Corse Ferrari 488 GTE Evo and Nick Tandy in the #64 Corvette C8.R.
The Belgian's lap held up until the end, taking pole for the Asian team's privately-entered car.
James Calado was fourth in the second #51 AF Corse Ferrari, four tenths removed from pole, with Gianmaria Bruni settling for fifth in the sole remaining factory Porsche.
Porsche secured a clean sweep of the top three in GTE Am, with Julien Andlauer taking pole in the #88 Dempsey Proton car with a 3.47.987s effort.
Andlauer stayed over five tenths clear of the #86 GR Racing Porsche of Ben Barker and put nine tenths on the third-placed #56 Team Project 1 machine of Matteo Cairoli.
Hyperpole results:
| Cla | # | Drivers | Car | Class | Avg Time | Gap |
|---|---|---|---|---|---|---|
| 1 | 7 | Toyota GR010 - Hybrid | HYPERCAR | 3'23.900 | ||
| 2 | 8 | Toyota GR010 - Hybrid | HYPERCAR | 3'24.195 | 0.295 | |
| 3 | 36 | Alpine A480 | HYPERCAR | 3'25.574 | 1.674 | |
| 4 | 708 | Glickenhaus 007 LMH | HYPERCAR | 3'25.639 | 1.739 | |
| 5 | 709 | Glickenhaus 007 LMH | HYPERCAR | 3'26.931 | 3.031 | |
| 6 | 38 | Oreca 07 | LMP2 | 3'27.950 | 4.050 | |
| 7 | 41 | Oreca 07 | LMP2 | 3'28.470 | 4.570 | |
| 8 | 65 | Oreca 07 | LMP2 | 3'28.586 | 4.686 | |
| 9 | 26 | Aurus 01 | LMP2 | 3'28.943 | 5.043 | |
| 10 | 32 | Oreca 07 | LMP2 | 3'29.078 | 5.178 | |
| 11 | 23 | Oreca 07 | LMP2 | 3'30.027 | 6.127 | |
| 12 | 72 | Porsche 911 RSR | LMGTE PRO | 3'46.882 | 22.982 | |
| 13 | 52 | Ferrari 488 GTE EVO | LMGTE PRO | 3'47.063 | 23.163 | |
| 14 | 64 | Chevrolet Corvette C8.R | LMGTE PRO | 3'47.093 | 23.193 | |
| 15 | 51 | Ferrari 488 GTE EVO | LMGTE PRO | 3'47.247 | 23.347 | |
| 16 | 91 | Porsche 911 RSR | LMGTE PRO | 3'47.696 | 23.796 | |
| 17 | 88 | Porsche 911 RSR | LMGTE AM | 3'47.987 | 24.087 | |
| 18 | 86 | Porsche 911 RSR | LMGTE AM | 3'48.560 | 24.660 | |
| 19 | 56 | Porsche 911 RSR | LMGTE AM | 3'48.876 | 24.976 | |
| 20 | 47 | Ferrari 488 GTE EVO | LMGTE AM | 3'49.387 | 25.487 | |
| 21 | 71 | Ferrari 488 GTE EVO | LMGTE AM | 3'49.477 | 25.577 | |
| 22 | 33 | Aston Martin Vantage AMR | LMGTE AM | 3'49.676 | 25.776 | |
| 23 | 92 | Porsche 911 RSR | LMGTE PRO | |||
| View full results | ||||||