The H family is a line of automobile 60° V6 engines from Suzuki. Ranging in displacement from 1998 to 2736 cc, the H family was a modern all-aluminum engine with dual overhead cams, 24 valves, and multi-port fuel injection. It was co-developed with Mazda and Toyota, which used a similar design in their 2.0 L KF V6 and the Toyota VZ engine. The H family was introduced in 1994 with the H20, but Suzuki, Toyota and Mazda's designs diverged greatly with the former increasing displacement and the latter experimenting with alternative induction technologies and smaller engine sizes. The four-cylinder J engine, which appeared in 1996, shared parts and design with the H family.

H20A

The H20A displaces 1998 cc; bore and stroke is 78x69.7 mm. With a 9.5:1 compression ratio, it produces 107 kW at 6,500 rpm and 172 Nm at 4,000 rpm. Applications:

H25A

The H25A displaces 2495 cc; bore and stroke is 84x75 mm and produced 106 kW when first introduced. With a 9.5:1 compression ratio, it produced 106 kW at 6,500 rpm and 203 Nm at 3,500 rpm on its introduction, with a 2001 update increasing this to 116 kW and 213 Nm. It is also being considered and used for various ultra-light aircraft propulsion systems, like the Titan T-51 Mustang. Applications:

H27A

The H27A is a modern version of the H25A, a reliable motor displacing 2736 cc, coming from an 88x75 mm bore and stroke (VVT added in 2006). The engine is tuned to achieve most of its torque at low revs at the expense of raw power at high revs, making the engine very responsive in day-to-day driving. It produces 138 kW at 6,000 rpm and 250 Nm at 3,300 rpm. Applications: