Toyota 3L (2.8L) and 5L (3.0L) belong to classic Toyota L‑family naturally aspirated diesel engines. The 3L features simple mechanical injection for light commercial and off‑road use. The upgraded 5L engine offers larger displacement and higher torque for heavy‑duty transport. Both engines share many interchangeable repair parts, huge demand for rebuild kits, cylinder heads, crankshafts and other engine components for global auto spare‑part dealers.