Marciello and Gounon claimed the Endurance Cup crown last year together with fellow AMG factory driver Daniel Juncadella after winning the Spa 24 Hours, while Marciello also earned the overall GTWCE crown after finishing second in the Sprint Cup with Boguslavskiy.
The Russian 22-year-old has driven for the team since 2019, when he won the Endurance Cup silver division, and scored two outright podiums in 2020 when paired with Marciello and DTM race-winner Felipe Fraga.
Boguslavskiy sat out the Endurance Cup last year as he claimed three Sprint Cup wins, beating his tally of two from 2020 when he also finished runner-up alongside Marciello.
ASP will enter a second car in the Endurance Cup Pro division anchored by 2021 DTM champion Maximilian Gotz, who switches from the Getspeed squad with which he finished second in last year's Spa 24 Hours.
Gotz, who finished second on his first appearance with the team subbing for Gounon alongside Jim Pla in last year's Magny-Cours Sprint Cup round, will be joined by Thomas Drouet and Lorenzo Ferrari.
Marciello and Boguslavskiy will again line up to contest the Sprint Cup, which features a record-breaking 40-car grid.
Source: Autosport