The Mazda KL-DE 2.5-liter V6 engine was produced at the company’s factories from 1992 to 2002 and was installed on European and American modifications of the 626, MX-6 or Millenia models. This power unit is also known as the KL-03 and was found under the hood of the Ford Probe.
The K-engine family includes: K8‑DE, K8‑ZE, KF‑DE, KF‑ZE, KJ‑ZEM, KL‑G4, KL‑ZE.
The engine was installed on:
- Mazda 626 GE in 1992 – 1997;
- Mazda Millenia TA in 1994 – 2002;
- Mazda MX-6 GE in 1992 – 1997;
- Mazda Xedos 9 TA in 1993 – 2002.
Specifications
| Production years | 1992-2002 |
| Displacement, cc | 2497 |
| Fuel system | distributed injection |
| Power output, hp | 165 – 175 |
| Torque output, Nm | 210 – 220 |
| Cylinder block | aluminum V6 |
| Block head | aluminum 24v |
| Cylinder bore, mm | 84.5 |
| Piston stroke, mm | 74.2 |
| Compression ratio | 9.2 |
| Features | DOHC, VRIS |
| Hydraulic lifters | yes |
| Timing drive | belt |
| Phase regulator | no |
| Turbocharging | no |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 4.0 |
| Fuel type | petrol |
| Euro standards | EURO 3 |
| Fuel consumption, L/100 km (for Mazda Millenia 2001) — city — highway — combined |
13.5 7.9 9.8 |
| Engine lifespan, km | ~450 000 |
| Weight, kg | 171 (with attachments) |
Disadvantages of the Mazda KL-DE engine
- With reliability, the engines of this series are all right;
- The aluminum block here is very afraid of overheating, watch the cooling system;
- Valve cover gaskets to 100,000 km often lose their tightness and leak;
- The timing belt serves approximately 80 – 90 thousand km, but when it breaks, the valve does not bend;
- Due to poor-quality lubrication, hydraulic lifters can knock even up to 50,000 km.
