They combined to take the Japanese manufacturer’s third pole of the year by just over a tenth from Porsche’s new high-downforce version of the latest 919 Hybrid.
Lopez was fastest after the first runs aboard the #7 Toyota TS050 Hybrid on a 1m38.083s, which Kobayashi followed up on with a 1m38.153s.
That gave them a 1m38.118s average and pole by just over a tenth of a second from Porsche drivers Brendon Hartley and Timo Bernhard.
Hartley was second-fastest after the first runs on a 1m38.292s, while Bernhard was a shade quicker on a 1m38.252s to lower their average to 1m38.272s.
Lopez, who has returned to the #7 car after driving Toyota’s third entry at last month’s Le Mans 24 Hours, said: “It was a good lap, but a bit of a surprise because Porsche had been so strong in free practice.
“It was my first qualifying attempt on quali settings, low fuel and new tyres, so I wasn’t expecting to be so competitive.”
Hartley and Bernhard ended up just six thousandths quicker on aggregate than the sister #1 car qualified by Neel Jani and Andre Lotterer.
Jani posted a 1m38.671s on his run, before Lotterer set the fastest time of the session with a 1m37.886s.
The second Toyota qualified by Kazuki Nakajima and Anthony Davidson was six tenths off pole, the Japanese driver setting his time on his third lap on the tyres.
G-Drive Racing again took LMP2 qualifying honours with its #26 Oreca shared by Ben Hanley and Pierre Thiriet.
Hanley, standing in for Alex Lynn, was fastest on the first runs with 1m44.331s before Thiriet posted a 1m45.671s to give them a 1m45.001s average.
That put them two tenths ahead of the #38 Jackie Chan DC Racing Oreca qualified by Thomas Laurent and Oliver Jarvis.
Third place when to the best of the Rebellion Orecas, the #31 car qualified by Bruno Senna and Julien Canal.
The #35 Signatech Alpine squad, which qualified fifth, has been handed a 30-second stop-and-go penalty in Sunday’s race for dangerous driving.
Nelson Panciatici impeded Nakajima’s Toyota during a hot lap, almost forcing the Japanese driver off the road at the fast Turn 12 right-hander as he swerved to warm up his tyres.
Porsche heads GTE qualifying
Porsche claimed its first GTE Pro pole position of the season with Michael Christensen and Kevin Estre.
Christensen led the times on his run with a 1m53.779s, before Estre posted a 1m54.235s to give the #91 Porsche 911 RSR a 1m54.007s average.
That gave them a three-tenths margin on the #95 Aston Martin Vantage GTE shared by Marco Sorensen and Nicki Thiim, who ended up with a 1m54.352s average.
The second Porsche qualified third in the hands of Richard Lietz and Frederic Makowiecki on 1m54.518s despite using only one set of tyres.
Ford took fourth on 1m54.691s with Olivier Pla and Stefan Mucke in the #66 Ganassi Ford GT.
The best of the AF Corse Ferrari 488 GTEs was a further tenth behind in fifth with Davide Rigon and Toni Vilander.
Pedro Lamy and Paul Dalla Lana took their third GTE Am pole position of the season in the #98 Aston Martin.
LMP qualifying results:
|1||7|| Kamui Kobayashi
Jose Maria Lopez
|Toyota TS050 Hybrid||LMP1||1’38.118|
|2||2|| Timo Bernhard
|Porsche 919 Hybrid||LMP1||1’38.272||0.154|
|3||1|| Andre Lotterer
|Porsche 919 Hybrid||LMP1||1’38.278||0.160|
|4||8|| Anthony Davidson
|Toyota TS050 Hybrid||LMP1||1’38.703||0.585|
|5||26|| Roman Rusinov
|6||38|| Oliver Jarvis
|7||31|| Bruno Senna
|8||13|| Pipo Derani
David Heinemeier Hansson
|9||35|| Nelson Panciatici
|10||25|| Vitaly Petrov
|11||36|| Nicolas Lapierre
|12||37|| David Cheng
|13||28|| François Perrodo
|14||24|| Roberto Merhi
|15||4|| Marco Bonanomi
|ENSO CLM P1/01||LMP1||1’47.485||9.367|
|16||34|| Nigel Moore
|Ligier JSP 217||LMP2||1’48.104||9.986|
GT qualifying results:
|1||92|| Michael Christensen
|Porsche 911 RSR||LMGTE PRO||1’54.007|
|2||95|| Marco Sorensen
|Aston Martin Vantage||LMGTE PRO||1’54.352||0.345|
|3||91|| Richard Lietz
|Porsche 911 RSR||LMGTE PRO||1’54.518||0.511|
|4||66|| Stefan Mücke
|Ford GT||LMGTE PRO||1’54.694||0.687|
|5||71|| Toni Vilander
|Ferrari 488 GTE||LMGTE PRO||1’54.757||0.750|
|6||67|| Harry Tincknell
|Ford GT||LMGTE PRO||1’54.807||0.800|
|7||51|| James Calado
Alessandro Pier Guidi
|Ferrari 488 GTE||LMGTE PRO||1’55.037||1.030|
|8||97|| Darren Turner
|Aston Martin Vantage||LMGTE PRO||1’55.382||1.375|
|9||98|| Pedro Lamy
Paul Dalla Lana
|Aston Martin Vantage V8||LMGTE AM||1’56.721||2.714|
|10||77|| Christian Ried
|Porsche 911 RSR (991)||LMGTE AM||1’57.129||3.122|
|11||54|| Francesco Castellacci
|Ferrari 488 GTE||LMGTE AM||1’57.958||3.951|
|12||86|| Michael Wainwright
Nick Foster Jr.
|Porsche 911 RSR (991)||LMGTE AM||1’58.027||4.020|
|13||61|| Matt Griffin
Mok Weng Sun
|Ferrari 488 GTE||LMGTE AM||1’58.335||4.328|