SCHEDULE 13D/A 0000895345-25-000273 0001584544 XXXXXXXX LIVE 9 Common Stock, $0.001 par value per share 08/21/2025 false 0001735707 366505105 Garrett Motion Inc.

375 Park Avenue 11th Floor New York NY 10152

Susanne V. Clark 2126725000 c/o Centerbridge Partners, L.P. 375 Park Avenue, 11th Floor New York NY 10152 0001584544 Centerbridge Credit Partners Master, L.P. b OO E9 0 2907370 0 2907370 2907370 N 1.5 PN All calculations of percentage ownership herein are based on a total of 201,575,459 shares of Common Stock issued and outstanding as of July 18, 2025, as reported in the Form 10-Q filed by the Issuer on July 24, 2025, decreased to reflect the Issuer's repurchase of 5,000,000 shares from other investors on August 20, 2025. 0001484834 Centerbridge Credit Partners Offshore General Partner, L.P. b OO DE 0 2907370 0 2907370 2907370 N 1.5 PN 0001667800 Centerbridge Credit Cayman GP, Ltd. b OO E9 0 2907370 0 2907370 2907370 N 1.5 OO 0001584682 Centerbridge Credit GP Investors, L.L.C. b OO DE 0 2907370 0 2907370 2907370 N 1.5 OO 0001674541 Centerbridge Special Credit Partners III-Flex, L.P. b OO DE 0 6889439 0 6889439 6889439 N 3.5 PN 0001827884 Centerbridge Special Credit Partners General Partner III, L.P. b OO DE 0 6889439 0 6889439 6889439 N 3.5 PN 0001980920 CSCP III Cayman GP Ltd. b OO E9 0 6889439 0 6889439 6889439 N 3.5 OO 0001425800 Jeffrey H. Aronson b OO X1 0 9796809 0 9796809 9796809 N 5 IN Common Stock, $0.001 par value per share Garrett Motion Inc. 375 Park Avenue 11th Floor New York NY 10152 This amendment (this "Amendment No. 9") amends the Schedule 13D filed by the Reporting Persons on May 13, 2021 (the "Original Schedule 13D", as amended by that certain Amendment No. 1 filed by the Reporting Persons on April 14, 2023, the "Schedule 13D Amendment No. 1", as further amended by that certain Amendment No. 2 filed by the Reporting Persons on June 7, 2023, the "Schedule 13D Amendment No. 2", as further amended by that certain Amendment No. 3 filed by the Reporting Persons on June 14, 2023, the "Schedule 13D Amendment No. 3, as further amended by that certain Amendment No. 4 filed by the Reporting Persons on December 14, 2023 (the "Schedule 13D Amendment No. 4"), as further amended by that certain Amendment No. 5 filed by the Reporting Persons on December 17, 2024 (the "Schedule 13D Amendment No. 5"), as further amended by that certain Amendment No. 6 filed by the Reporting Persons on May 30, 2025 (the "Schedule 13D Amendment No. 6"), as further amended by that certain Amendment No. 7 filed by the Reporting Persons on August 8, 2025 (the "Schedule 13D Amendment No. 7"), as further amended by that certain Amendment No. 8 filed by the Reporting Persons on August 15,2025 (the "Schedule 13D Amendment No. 8"), and as further amended by this Amendment No. 9 (the "Schedule 13D"). Capitalized terms used herein but not defined herein shall have the respective meanings defined in the Original Schedule 13D, as previously amended. The Schedule 13D is amended hereby only as specifically set forth herein, provided that with respect to any Item amended herein, if such Item is incorporated by reference into any other Item in the Schedule 13D as previously amended, such incorporation by reference is also amended hereby. Item 5(a) is hereby amended and restated to read as follows: The information required by Items 5(a) is set forth in rows 7 through 13 of the cover page for each of the Reporting Persons and is incorporated herein by reference. Item 5(b) is hereby amended and restated to read as follows: The information required by Items 5(b) is set forth in rows 7 through 13 of the cover page for each of the Reporting Persons and is incorporated herein by reference. Item 5(c) is hereby amended by the addition of the following: On August 20, 2025, SC III-Flex sold 212,050 shares of Common Stock and Credit Partners Master sold 87,950 shares of Common Stock, in each case for $13.2285 per share in cash on the open market. On August 21, 2025, SC III-Flex sold 4,028,943 shares of Common Stock and Credit Partners Master sold 1,671,057 shares of Common Stock, in each case at an average price of $13.1109 per share in cash on the open market. On August 22, 2025, SC III-Flex sold 175,808 shares of Common Stock and Credit Partners Master sold 74,192 shares of Common Stock, in each case for $13.3301 per share in cash on the open market. Item 5(e) is hereby amended and restated as follows: On August 22, 2025, the Reporting Persons ceased to beneficially own more than 5% of the outstanding shares of Common Stock. Centerbridge Credit Partners Master, L.P. /s/ Susanne V. Clark 08/22/2025 Centerbridge Credit Partners Offshore General Partner, L.P. /s/ Susanne V. Clark 08/22/2025 Centerbridge Credit Cayman GP, Ltd. /s/ Susanne V. Clark 08/22/2025 Centerbridge Credit GP Investors, L.L.C. /s/ Susanne V. Clark 08/22/2025 Centerbridge Special Credit Partners III-Flex, L.P. /s/ Susanne V. Clark 08/22/2025 Centerbridge Special Credit Partners General Partner III, L.P. /s/ Susanne V. Clark 08/22/2025 CSCP III Cayman GP Ltd. /s/ Susanne V. Clark 08/22/2025 Jeffrey H. Aronson /s/ Jeffrey H. Aronson 08/22/2025