How to replace glow plugs on a Volkswagen Passat B8

How to remove and change your glow plugs (without snapping them).

The OEM part numbers for the VW Passat B8 2.0 TDI (2015 plate):
Glow plug with pressure sensor: 03L 905 061 K
What I used : https://m.autodoc.co.uk/beru/11925055
Glow plugs: 04L 963 319 B
what I used: https://m.autodoc.co.uk/beru/12772506

I did a bit of research and could not find both glow plugs with and without pressure sensor from the same brand other than from AutoDoc.
Download the AutoDoc app and use my code for a £10 discount: AC23962803.
They ship from Germany so it will take at least a week to arrive but it was worth the wait as with discounts I saved about £30 on parts.

If you’re like me and not a mechanic (btw I did this for the first time) you might need the following tools:

Torque wrench: https://amzn.to/3MwmKnQ
Do use this if you’re not confident in your arm not over tightening the glow plugs. (Ideally set to 15-20Nm)

Adaptor for the wrench in case it’s not 1/4. https://amzn.to/3tHS7TG

Socket extension bar, so you can reach the glow plugs. https://amzn.to/35ZdzeK

Set of sockets (you’ll need 10 and 12mm). https://amzn.to/3vKIWol

WD40 to loosen up the glow-plugs (crucial). https://amzn.to/3hOOaHp

Glow plug socket pliers. https://amzn.to/3Kq9Sh5

I used a dab of high temperature grease but reading through forums there are mixed opinions weather to use it or not as you might over-tighten the glow plugs. https://amzn.to/3vLoGCY

However if you trust your hands dexterity, and probably easier to use, you can get a T handle socket wrench, which is what I used and preferred to use. https://amzn.to/3HZyETS

You can also buy the tools from AutoDoc.

The hardest part from this DIY service was to clean the debris around the glow plugs before taking them out. If you don’t manage to clean properly, you risk getting sand and dust inside the bay. If the vacuuming doesn’t work, try to use a high pressure blow. And scraping around helps to breakup the muck.
PS do this at your own risk! Quite a few things that can go wrong. I took the risk after getting a quote from a garage with a £230 difference to me doing it, sorry couldn’t justify it.



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