BMW 325e Parts & Accessories

BMW 325e Parts & Accessories

The BMW 325e is the E30 eta variant, fitted with the M20B27 2.7-liter inline-six tuned for low-speed torque and fuel economy rather than high-rpm power. The eta engine's long-stroke design produces 121 hp in US-spec but impressive low-rpm torque, making the 325e a smooth, relaxed cruiser that still benefits from targeted performance improvements.

Popular Upgrades

A performance cat-back exhaust system improves the M20B27's breathing and exhaust tone. Many 325e owners convert to a standard M20B25 intake manifold and carburetion setup to improve high-rpm breathing, transforming the eta engine's character. Coilover suspension and front strut braces sharpen the E30 chassis significantly.

What is the BMW 325e eta engine and how does it differ from the 325i?

The M20B27 eta engine has a longer stroke than the M20B25 in the 325i, prioritizing low-rpm torque and fuel economy over peak power. The 325e produces 121 hp versus 168 hp in the 325i, but generates comparable torque at much lower rpm. Intake swaps and head modifications can significantly close the power gap.

Can the BMW 325e be converted to 325i specification?

Yes. The most common conversion involves fitting the 325i's intake manifold and fuel injection components to the M20B27 bottom end, which already has a slightly larger displacement advantage. A full 325i intake, ECU, and exhaust conversion on the larger M20B27 block can produce 175-185 hp with reliability.

Find BMW 325e parts at Black Ops Auto Works. Browse our exhaust, suspension, and air intake collections.