The General Electric F404 and F412 are a family of afterburning turbofan engines in the 10,500–19,000 lbf (47–85 kN) class (static thrust).

For the F/A-18, GE based the F404 on the YJ101 engine they had developed for the Northrop YF-17, enlarging the bypass ratio from 0.20 to 0.34 to enable higher fuel efficiency.

GE developed the F404-GE-402 in response to a Swiss requirement for more power in its F/A-18 version; it produces a maximum of 17,700 lbf (78.7 kN) of thrust with afterburner.

[7][8] It incorporates latest hot section materials and technologies as well as FADEC system for reliable power and performance.

[10] Two deals for 17 and 24 engines for powering LSP (including Naval prototypes) and Mk 1 IOC variants of Tejas was signed in 2004 and 2007, respectively.

[12] On 17 August 2021, India signed a contract with GE worth ₹5,375 crore (equivalent to ₹60 billion or US$700 million in 2023) to supply 99 F404 engines and service support by 2029.

[9][13] However, the first engine of the deal signed in 2021 is yet to be delivered as of October 2024 which has led to the delay of delivery of HAL Tejas Mk1A aircraft to the Indian Air Force.