BMW N57 Engine Service Manual

About this manual

This document provides detailed technical information for servicing the BMW N57 diesel engine, covering mechanical systems, engine components, and specifications. It includes engine variants, system overviews, and component details for models such as the 330d, 730d, and X5 3.0d. The manual is designed for technical training and practical use, with sections on engine identification, mechanical systems, and service information.

The N57 engine features a DOHC valvegear layout, hydraulic valve clearance adjusters (HVA), and a rear-mounted chain drive system. It complies with EURO 5 and EURO 6 emissions standards and is used in various BMW models from 2002 onward. Technical data includes displacement, power output, torque, and compression ratio for different variants.

What's inside

• Engine Variants
• System Overview
• Engine Identification
• Engine Mechanical System
• Oil System
• Air Intake and Exhaust System
• Fuel System
• Cooling System
• Engine Electrical System
• Service Information

Specifications

Frequently asked questions

What is the compression ratio of the N57 engine?

The compression ratio is 17 : 1.

What is the firing order of the N57 engine?

The firing order is 1-5-3-6-2-4.