Engine Mazda KL-G4

The Mazda KL-G4 2.5-liter V6 gasoline engine was produced by the company from 1997 to 2002 and was installed only on the 626 model in the back of the GF in the modification for the US and Canadian markets. This motor was distinguished by a complex exhaust system with three catalysts, four lambdas.

The K-engine family includes: K8‑DE, K8‑ZE, KF‑DE, KF‑ZE, KJ‑ZEM, KL‑DE, KL‑ZE.

The engine was installed on:

  • Mazda 626 GF in 1997 – 2002.


Production years 1997-2002
Displacement, cc 2497
Fuel system distributed injection
Power output, hp 170
Torque output, Nm 221
Cylinder block aluminum V6
Block head aluminum 24v
Cylinder bore, mm 84.5
Piston stroke, mm 74.2
Compression ratio 9.5
Features DOHC, VRIS
Hydraulic lifters no
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 626 2000)
— city
— highway
— combined
Engine lifespan, km ~500 000
Weight, kg 175 (with attachments)

Disadvantages of the Mazda KL-G4 engine

  • This motor is quite reliable, but the aluminum block and cylinder head are very afraid of overheating;
  • Do not delay with the replacement of candles or you will have to change 3 expensive coils;
  • After 100 thousand km, you may encounter grease leaks from under the valve covers;
  • The belt runs 80,000 km, replacement is difficult and expensive, but if the belt breaks, the valve does not bend;
  • Since there are no hydraulic lifters here, the valves need to be adjusted every 100,000 km.

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