If you're working on a BMW E46 and you're reaching for the torque wrench, this is the page you want open. The E46 3 Series is a genuinely rewarding car to maintain — the engineering is logical, parts are accessible, and the DIY community is enormous. But get the torque specs wrong and you'll be dealing with cracked plastic housings, stretched bolts, or a cooling system that lets go at the worst possible moment.

The BMW E39 5 Series ran from 1995 to 2004, and it earned a reputation as one of the finest driver’s cars BMW ever made. It’s also a car that rewards proper maintenance and punishes neglect. If you’re doing any mechanical work on an E39 — whether it’s a 520i, a 540i, or the legendary M5 — having accurate torque specs is non-negotiable. The wrong torque on a cylinder head bolt or a crankshaft pulley can mean a rebuild instead of a weekend job.

This guide covers torque specs for all common E36 DIY jobs across all six-cylinder variants — M50, M52, S52 — as well as the four-cylinder M42/M44 where specs differ. Values are sourced from the Bentley E36 service manual, BMW TIS, and community-verified references on BimmerFest, R3VLimited, and Pelican Parts.