BMW 320si Parts & Accessories

BMW 320si Parts & Accessories

The BMW 320si is a rare E90 homologation special produced in 2006 to qualify BMW's works cars for the World Touring Car Championship. Fitted with a higher-output 2.0-liter N45 four-cylinder in a stripped, track-ready specification, only 1,000 units were produced, making genuine 320si parts and provenance documentation highly sought after.

Popular Upgrades

Given the 320si's motorsport homologation purpose, owners favor period-correct upgrades: race-specification exhaust manifolds and cat-back systems, adjustable coilover suspension using E90-compatible strut and spring dimensions, and high-performance brake pads and braided lines appropriate to its track-oriented character.

What makes the BMW 320si different from the standard E90 320i?

The 320si uses the N45B20 engine with revised internals producing 173 hp from a naturally aspirated 2.0-liter, versus the 150 hp N46 in the standard 320i. The body was also lightened with deleted rear seats and sound insulation on full homologation cars, with a reinforced front strut tower design for track use.

Can E90 320i parts be used on a BMW 320si?

Many E90 platform components including exterior panels, suspension geometry parts, and brake hardware are shared with the standard E90 320i. Engine-specific parts for the N45 differ from the N46 and must be confirmed by engine code, but chassis-level parts like coilovers, sway bars, and brake kits specified for the E90 sedan generally fit the 320si.

Source the right parts for your BMW 320si at Black Ops Auto Works. Browse our exhaust, suspension, and air intake collections.