BMW 4cyl (Small Case) Differentials
Straight-four
1960–1984 – 1.5–2.0 L M10
1986–1990 – 2.0–2.5 L S14
1987–1995 – 1.6/1.8 L M40
1989–1996 – 1.8 L M42
1991–2002 – 1.6/1.8/1.9 L M43
1996–2001 – 1.9 L M44
2001–2004 – 1.6 L N40
2001–2004 – 1.8/2.0 L N42
2004–2007 – 1.8/2.0 L N46
2004–2011 – 1.6/2.0 L N45
2007–2011 – 1.6/2.0 L N43
2011–current – 2.0 L N20
2011–current – 1.6 L N13
2012–current – 2.0 L N26
2013–present – 2.0 L B48
