The 1998 BMW 323i is equipped with the M52B25 2.5-liter inline-6 engine, producing 170 horsepower and 181 lb-ft of torque. This naturally aspirated DOHC engine features BMW’s VANOS variable valve timing system and aluminum construction. The M52 engine family is known for smooth power delivery and good fuel economy, typically achieving 20-22 mpg city and 28-30 mpg highway. It uses a drive-by-wire throttle system and requires premium fuel for optimal performance. The engine is paired with either a 5-speed manual or 4-speed automatic transmission.

The 1998 BMW 323i shares most parts with other E36 3 Series models from 1992-1999, including the 318i, 325i, 328i, and M3 with some exceptions. Engine-specific parts like intake manifolds and ECUs are compatible with 1996-2000 323i models. Body panels, interior components, suspension parts, and most electrical components interchange across all E36 years. However, there were minor updates in 1996 (OBD-II) and 1997 (revised interior) that affect some component compatibility. Always verify part numbers when sourcing components, especially for emissions-related and electronic parts.

Parts availability changes daily. Call us at (603) 392-7313 or visit our online shop to check current inventory from this specific vehicle. If we have sold a part you need, our Parts Broker service can source it from our network of partner yards nationwide.

Yes! We ship parts from this vehicle and our entire inventory nationwide. Most orders ship within 1-2 business days via FedEx or freight carriers for larger components like engines and transmissions. Call (603) 392-7313 for a shipping quote on any part.

The M52B25 2.5L engine is generally reliable when properly maintained, but has known weak points. The VANOS system is the primary concern, requiring rebuild or replacement around 100,000 miles. The cooling system needs complete overhaul every 80,000-100,000 miles due to plastic component failure. Oil changes every 5,000 miles with quality synthetic oil are crucial. The engine can easily reach 200,000+ miles with proper maintenance. Avoid deferred maintenance as repair costs escalate quickly. Overall, it’s a solid engine that rewards attentive owners but punishes neglect.