The 1.2-liter 16-valve Suzuki K12B engine was produced in Japan from 2008 to 2020, first in the regular version, and since 2013 in the Dualjet version with two nozzles per cylinder. In the Chinese market, this unit was installed on the Changan model under the JL473Q index.
Engines of the K-series: K6A, K10A, K10B, K12B, K14C, K14B, K15B.
Specifications
| Production years | 2008-2020 |
| Displacement, cc | 1242 |
| Fuel system | distributed injection |
| Power output, hp | 86 – 94 (MPI) 90 – 94 (Dualjet) |
| Torque output, Nm | 114 – 118 (MPI) 118 – 120 (Dualjet) |
| Cylinder block | aluminum R4 |
| Block head | aluminum 16v |
| Cylinder bore, mm | 73 |
| Piston stroke, mm | 74.2 |
| Compression ratio | 11.0 (MPI) 12.0 (Dualjet) |
| Features | DOHC |
| Hydraulic lifters | no |
| Timing drive | chain |
| Phase regulator | on both shafts |
| Turbocharging | no |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 3.1 |
| Fuel type | petrol |
| Euro standards | EURO 4/5 |
| Fuel consumption, L/100 km (for Suzuki Swift 2015) — city — highway — combined |
6.1 4.4 5.0 |
| Engine lifespan, km | ~280 000 |
The engine was installed on:
- Suzuki Ciaz 1 (VC) in 2014 – 2020;
- Suzuki Solio 2 (MA15) in 2010 – 2015;
- Suzuki Splash 1 (EX) in 2008 – 2014;
- Suzuki Swift 4 (NZ) in 2010 – 2017;
- Opel Agila B (H08) in 2008 – 2014.
Disadvantages of the Suzuki K12B engine
- This is a simple design and reliable motor, without any serious weaknesses.
- The main breakdowns are associated with throttle contamination and ignition coil failures.
- Saving on oil often results in clogging of phase regulator valves.
- Also, the owners complain about the rather long warm-up of the engine in the winter.
- There are no hydraulic lifters and valve clearances need to be adjusted every 100,000 km.
