BMW 3 Series E90/E92 Parts Guide (2006-2011) | Owner Tips

Nearly two decades on, the E90-generation BMW 3 Series is still one of the most satisfying cars of its size to drive. The steering weight, the balance, the straight-six soundtrack on the petrol cars — none of it has really been bettered at the price. What has changed is the maintenance bill. These cars are now firmly in the "owned by enthusiasts, not by lease companies" phase of life, and the difference between a car that feels tight and one that feels tired is almost entirely down to which parts have been replaced and which have been ignored.

This guide covers the whole family: the E90 saloon, E91 Touring, E92 coupé and E93 convertible, built roughly from 2005 to 2013 depending on body style. If you are keeping one on the road, these are the areas worth knowing about.

First, know exactly which car you have

This matters more on the E90 than on most cars, because there is a mid-life facelift (BMW calls it the LCI) that changed a surprising number of parts.

• E90 saloon and E91 Touring — facelifted from around September 2008.
• E92 coupé and E93 convertible — facelifted a bit later, from around March 2010.

The facelift altered headlights and tail lights, bumpers, some trim and several interior details. A pre-LCI tail light will not simply bolt into an LCI car, and vice versa. So before you order anything, write down three things: your chassis code (E90/E91/E92/E93), your month and year of manufacture (not the registration date — check the plate in the door shut), and your engine code. Those three details resolve most fitment questions on their own.

Engine bay: leaks and cooling come first

The N-series petrol engines in these cars are generally strong, but they use a lot of plastic and rubber that has now aged out.

• Valve cover and oil filter housing gaskets. Hardened gaskets are the single most common source of the burnt-oil smell after a run. Often the oil drips onto hot exhaust components, which is where the smell comes from.
• Cooling system components. Expansion tanks, thermostat housings and coolant hoses all become brittle with heat cycling. Many owners now replace the whole cooling circuit as a set rather than chasing one leak at a time — it is cheaper than a single overheat.
• Ignition parts. Coils and spark plugs are consumables. Rough idle, a flashing engine light or a stumble under load usually points here before anything more serious.
• Crankcase ventilation. On turbocharged variants in particular, the breather system is a known wear item; symptoms include rough idle, whistling and oil consumption.

None of this is exotic work. It is just work that accumulates if a car has had a few owners who only did oil changes.

Suspension and brakes: the run-flat tax

Many E90s left the factory on run-flat tyres, which have stiff sidewalls and pass more shock into the suspension than a conventional tyre does. Over years, that shows up as:

• Front control arm and thrust arm bushings. A knock over expansion joints, vague steering, or a shimmy under braking. This is the classic E90 front-end complaint and almost always bushings rather than anything dramatic.
• Rear shock mounts and top mounts. A dull thud from the back over speed breakers.
• Brake discs, pads and wear sensors. BMW's brake wear sensors are single-use — if you replace pads, plan on new sensors too, otherwise the dashboard warning will not clear properly.

If you drive on poor roads, treat the front control arms as a scheduled item rather than a fault. Renewing them transforms how the car feels far more than most owners expect.

Lighting and electrics

The E90 was an early adopter of complex lighting and body electronics, and that is where a lot of "weird" faults now live.

• Xenon ballasts and igniters. If your car has xenon headlights, a unit that flickers, starts pink or purple, cuts out when warm, or refuses to strike at all is usually a ballast or igniter rather than the bulb itself. Worth diagnosing before you buy a bulb.
• Tail light bulb carriers. The E90 is well known for burnt or corroded rear bulb holders causing intermittent tail and brake light faults.
• Window regulators and door module clips. A window that drops into the door, or moves slowly and noisily, is nearly always the regulator's plastic carrier rather than the motor.
• Door handle mechanisms. The outer handle carrier and its internal linkage wear, giving a handle that feels loose or does not spring back.

Interior parts that simply break

These are the small items that make an otherwise good car feel neglected, and they are among the most-ordered parts for this generation:

• Dashboard and centre AC vents. The slider tabs and internal clips are brittle by now, so the vent will not hold its position.
• Glove box and storage latches. A common casualty of a decade of use.
• Steering wheel and console buttons. The soft-touch coating wears through and the printed symbols fade.
• Sunroof sunshade. On cars with a sunroof, the fabric shade can tear or jam off its rails.
• Cabin and engine air filters. Cheap, easy, and routinely overdue on used examples. A fresh cabin filter alone makes a noticeable difference to how the car smells.

How to order the right part first time

Aftermarket parts for this generation are plentiful and good, but the E90 family had many variants — different engines, different equipment packages, left- and right-hand drive, and the pre-LCI/LCI split. To avoid a return:

1. Start from your car, not the part. Filter by make, model and year first.
2. Check the OEM number. If you can read the number off the old part, or get it from your service centre, match on that. It is the single most reliable check there is.
3. Confirm the side and position. Left/right, front/rear, driver/passenger — and remember that on a right-hand-drive car, "driver's side" and "left" are not the same thing.
4. Note trim and options. Xenon versus halogen headlights, with or without folding mirrors, with or without a sunroof — all of these change the part you need.
5. Ask if you are unsure. Send the chassis number and a photo of the old part rather than guessing.

Frequently asked questions

Is the E90 expensive to keep on the road?

It is more expensive than a mainstream saloon of the same age, but far less than people assume — provided you buy sensibly priced aftermarket parts and do preventive work rather than waiting for a breakdown. The costly outcomes are almost always the result of a small leak or a worn bushing being left alone.

Will a pre-facelift part fit a facelift car?

Sometimes, but do not assume it. Lighting, bumpers and some interior trim changed. Always confirm by build month and OEM number.

Do I have to use genuine BMW parts?

No. For most wear items — filters, brake components, suspension bushings, vents, handles, switches, ballasts and mirrors — quality aftermarket parts do the job perfectly well at a fraction of dealer pricing. The important thing is that the part matches your exact variant.

My car shows a warning light after a repair. Why?

Several E90 systems need a reset or registration after work — brake wear sensors and battery replacement being the common ones. If a light persists after an otherwise correct repair, it is usually a reset that has been missed rather than a faulty part.

Getting the parts

We stock a wide range of aftermarket replacement parts for this generation — AC vents, door handles, xenon ballasts, mirrors, wipers, switches, filters and brake components among them. You can browse everything we carry for this chassis here: BMW 3 Series E90, E91, E92 and E93 (2006-2011) replacement parts. If you cannot find what you need, or you are not certain which variant your car takes, send us your chassis number and a photo of the old part and we will confirm the correct fitment before you order.