BMW E90 325i N52B25 Crankshaft | 2005 3 Series 218HP Replacement

BMW E90 325i N52B25 Crankshaft – High-Performance Engine Core

This N52B25 crankshaft is a perfect fit for the 2005 BMW 3 Series (E90) 325i. This part gives the 218HP N52B25 engine the structural integrity it needs, whether you’re rebuilding the whole engine or just fixing a spun bearing. Made of high-tensile cast iron (or forged steel, depending on the specific OE revision), it has seven main bearing journals and precise counterweighting to stop vibrations at high RPMs.

The crankshaft is the most important part of your BMW’s engine, and for the N52B25A engine, it has to be perfect. This new crankshaft is designed to bring back the smooth, high-revving performance that the 2005 3 Series is known for. It was made just for the 2.5L inline-six power unit, and it makes sure that the engine stays perfectly balanced and lasts a long time even when it’s hot.

Specifications:

Features:

• OEM Grade Precision: CNC-machined to BMW’s exact specs, so it fits perfectly when you put it in.
• N52 Specialized Design: Made to accommodate the magnesium-aluminum composite block’s distinctive sound waves.
• Induction makes the journals stronger, which means they will last longer and are less likely to break.
• Less Vibration: It is dynamically balanced, so it runs smoothly when it is not moving and has a smooth redline at 7,000 RPM.
• The holes are already bored for typical oiling pathways, so you can start lubricating right away.

Applications:

-> Engine rebuilds are the most important part of bringing N52B25A engines back to factory performance.

-> Performance Upgrades: A solid base for tuning efforts that don’t use forced induction.

-> Repair and Maintenance: A direct replacement for crankshafts that are cracked, scored, or damaged by heat.

-> Fleet Recovery is great for 2005 325i sedans (E90) and touring versions (E91) that need to be reliable for a long time.