EX-5.1

Exhibit 5.1

Paul, Weiss, Rifkind, Wharton & Garrison LLP

1285 Avenue of the Americas

New York, NY 10019

212-373-3000

212-757-3990

October 1, 2018

Garrett Motion Inc.

La Pièce 16Rolle,

Switzerland 1180

Re:	2018 Stock Incentive Plan of Garrett Motion Inc. and its Affiliates and 2018 Stock Incentive Plan for Non-Employee Directors of Garrett Motion Inc.

Ladies and Gentlemen:

We have acted as special counsel to Garrett Motion Inc., a Delaware corporation (the “Company”), in connection with the Registration Statement on Form S-8 (the “Registration Statement”) of the Company, filed with the Securities and Exchange Commission (the “Commission”) pursuant to the Securities Act of 1933, as amended (the “Act”), and the rules and regulations thereunder (the “Rules”). You have asked us to furnish our opinion as to the legality of the securities being registered under the Registration Statement. The Registration Statement relates to the registration under the Act of offers and sales of 10,400,000 shares of common stock, par value $0.001 per share, of the Company (collectively, the “Shares”), issuable in respect of awards to be granted under the 2018 Stock Incentive Plan of Garrett Motion Inc. and its Affiliates (the “2018 Plan”) and the 2018 Stock Incentive Plan for Non-Employee Directors of Garrett Motion Inc. (the “2018 Non-Employee Directors Plan”).

In connection with the furnishing of this opinion, we have examined originals, or copies certified or otherwise identified to our satisfaction, of the following documents (collectively, the “Documents”):

1. the Registration Statement;

2. the 2018 Plan and the forms of award agreements (collectively, the “2018 Agreements”), relating to awards granted under the 2018 Plan, included as Exhibits 4.3 and 4.5, 4.6, 4.7, 4.8 and 4.9, respectively, to the Registration Statement;

3. the 2018 Non-Employee Directors Plan and the forms of award agreements (collectively, the “2018 Non-Employee Directors Agreements,” and together with the 2018 Agreements, the “Agreements”) relating to awards granted under the 2018 Non-Employee Directors Plan, included as Exhibits 4.4 and 4.10 and 4.11, respectively, to the Registration Statement;

4. the Amended and Restated Certificate of Incorporation of the Company, included as Exhibit 4.1 to the Registration Statement; and

5. the Amended and Restated Bylaws of the Company, included as Exhibit 4.2 to the Registration Statement.

In addition, we have examined (i) such corporate records of the Company as we have considered appropriate, including copies of resolutions of the board of directors of the Company relating to the issuance of the Shares, certified by the Company and (ii) such other certificates, agreements and documents as we deemed relevant and necessary as a basis for the opinion expressed below. We have also relied upon certificates of public officials and the officers of the Company.

In our examination of the documents referred to above, we have assumed, without independent investigation, the genuineness of all signatures, the legal capacity of all individuals who have executed any of the documents reviewed by us, the authenticity of all documents submitted to us as originals, the conformity to the originals of all documents submitted to us as certified, photostatic, reproduced or conformed copies of valid existing agreements or other documents, the authenticity of all the latter documents and that the statements regarding matters of fact in the certificates, records, agreements, instruments and documents that we have examined are accurate and complete.

Based upon the above, and subject to the stated assumptions, exceptions and qualifications, we are of the opinion that the Shares have been duly authorized by all necessary corporate action on the part of the Company and, when issued and delivered in accordance with the terms of the 2018 Plan or the 2018 Non-Employee Directors Plan, as applicable, and any applicable Agreement under the 2018 Plan or the 2018 Non-Employee Directors Plan, as applicable, the Shares will be validly issued, fully paid and non-assessable.