all by size   all by year   all by hp  [137.5ci/ 2.3L]  140ci/ 2.3L   170ci/ 2.8L   200ci/ 3.3L   227ci/ 3.7L   232ci/ 3.8L   238ci/ 3.9L   244ci/ 4.0L   250ci/ 4.1L   256ci/ 4.2L   260ci/ 4.3L   281ci/ 4.6L   289ci/ 4.7L   302ci/ 5.0L   315ci/ 5.2L   330ci/ 5.4L   351ci/ 5.8L   390ci/ 6.4L   427ci/ 7.0L   428ci/ 7.0L   429ci/ 7.0L 

The first 137.5ci/2.3L Mustang engine was introduced in 2015 as a H-Code, 310hp, 4-Cylinder engine.

There were eleven 137.5ci / 2.3L engine offerings in 8 out of the 61 years of Mustang production.

2015	H-code, 2.3L 310hp turbo 4-cylinder (EcoBoost)
2016	H-code, 2.3L 310hp turbo 4-cylinder (EcoBoost)
2017	H-code, 2.3L 310hp turbo 4-cylinder (EcoBoost)
2018	H-code, 2.3L turbo 4-cylinder (EcoBoost)*
2019	H-code, 2.3L turbo 4-cylinder (EcoBoost)*
2020	H-code, 2.3L 310hp turbo 4-cylinder (EcoBoost)* H-code, 2.3L 330hp turbo I4 (High Performance)*
2021	H-code, 2.3L 310hp turbo 4-cylinder (EcoBoost) H-code, 2.3L 330hp turbo 4-cylinder (HP EcoBoost)
2022	H-code, 2.3L turbo 4-cylinder (EcoBoost) H-code, 2.3L turbo 4-cylinder (HP EcoBoost)

To see other engines go to the engine photo gallery index page.