Mazda BP-ZE 1.8L Engine For Sale.

Mazda BP-ZE 1.8L Engine.
Legendary Reliability and Performance.

The Mazda BP-ZE 1.8L engine stands as one of Mazda’s most iconic and reliable powerplants, celebrated for its smooth performance, robust construction, and impressive longevity. Introduced in the early 1990s as part of Mazda’s BP-series DOHC inline-four engines, the BP-ZE gained fame through vehicles like the Mazda MX-5 Miata, Mazda Familia GTX, and Mazda 323.

This naturally aspirated engine is known for its exceptional balance between efficiency and power, making it a favorite among drivers who value both durability and responsiveness.

The Mazda BP-ZE 1.8L Engine is a 1.8-litre DOHC, 16-valve inline-four engine with a displacement of 1839 cc. It produces around 96–100 kW (130–135 hp) and 159 Nm of torque, offering a lively driving experience while maintaining excellent fuel economy.
Furthermore, the aluminium alloy cylinder head combined with a cast-iron block ensures durability under high stress, while the dual overhead camshaft design promotes efficient airflow and precise valve timing. The engine’s compression ratio of 9.5:1 contributes to its strong mid-range torque and reliable combustion stability.

Equipped with multi-point fuel injection (MPFI) and electronic ignition, the BP-ZE delivers smooth throttle response and consistent power delivery. The cooling system is liquid-cooled, ensuring optimal thermal management even under heavy loads. With an oil capacity of approximately 3.8 litres (recommended 10W-30 or 5W-30 oil), regular servicing keeps this engine running smoothly for hundreds of thousands of kilometres.

When it comes to common weaknesses, the Mazda BP-ZE 1.8L engine has proven to be exceptionally dependable. However, like any older power unit, it has a few areas that require attention. Oil leaks from the cam cover gasket and front crank seal are relatively common due to age and heat cycles.
Idle instability or rough running can occur if the idle air control valve or throttle body becomes dirty. Over time, timing belt wear and aging ignition components can affect performance, so timely replacement is essential. Additionally, valve cover gasket leaks and coolant hose deterioration are typical maintenance concerns for engines of this generation.

BP-ZE 1.8L Engine Maintenance.

Regular maintenance such as oil changes every 7,500 km, timing belt replacement every 100,000 km, and coolant system checks can help the BP-ZE engine easily surpass 300,000 km of service life.

The Mazda BP-ZE 1.8L engine remains a trusted and sought-after option for drivers and restorers. Its blend of performance, reliability, and simple maintenance makes it one of the best naturally aspirated engines Mazda has ever produced.

Each engine we supply is inspected, compression-tested, and imported directly to our warehouse, guaranteeing high quality and long-term reliability.