Reddit mentions of 13621433077 Coolant Temperature Sensor in Lower Radiator Hose Compatiable for BMW E87 E81 3er E46 E90 E91 5er E39 E60 F10

50's Kid (Super Awesome): https://www.youtube.com/channel/UCml-eeSLJZ38Q5_sUnUXrZw

Shop Life TV (Pretty effen gewd): https://www.youtube.com/channel/UC5jnm5CEnLSEmoQ-ktgAj6g

Well the people in the forums are the people with the problems, but that's not to say they aren't the most knowledgeable group of people about the e46. But the youngest E46 is 12 years old, so unless it's a garage kept car from an old couple, it'll have to be fixed a little soon into your ownership. You'll be advised to do $300,000 in preventative maintenance when on the forums, don't. I love my car but I only paid $3,000 for mine had I done everything the forum members suggested I would've spent another $3,000 in repairs. Keep up on your plugs and coils. If I'm not mistaken the 328s and 325s have transmissions made by GM and no one cares for them, so wait for a 330. I'm sure I'll get corrected on the transmissions but whatevs enjoy the plethora of links.

A Bosche fuel pump from Amazon is $130 and the gasket is $20.

Pump:
https://www.amazon.com/gp/product/B000BZJE9C/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1

Gasket:
https://www.amazon.com/gp/product/B0054JTTFO/ref=oh_aui_detailpage_o02_s01?ie=UTF8&psc=1

The exact fuel filter $60:
https://www.amazon.com/gp/product/B006Q7HDII/ref=oh_aui_search_detailpage?ie=UTF8&psc=1

OEM plugs are $35, again Amazon.
https://www.amazon.com/gp/product/B00DERDU44/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1

DISA rebuild kit is $80 (DO THIS ONE ASAP, It's the one thing I always tell people, it'll prevent a steel pin from falling into a cylinder and ruining your engine) I bought mine from G.A.S. German Auto Sport I think. I love their warranty, if my DISA fails they'll give me that $80 towards one of their DISA units, like $400

Coolant system:
Expansion tank - $30 (Amazon) - known as the most likely failure

Radiator -$150 (AutoZone)
Lower radiator hose - $30 (Advance)

Temp sensor in lower hose - $8 (Amazon)
https://www.amazon.com/gp/product/B01FU9H9PO/ref=oh_aui_detailpage_o07_s00?ie=UTF8&psc=1

Upper radiator hose - $30 (AutoZone)
Water pump - $55 (AutoZone)
Thermostat - $55 (AutoZone)

Transmission intercooler thermostat - $16 (Amazon)

https://www.amazon.com/Orion-Cooler-Expansion-Thermostat-17111437362/dp/B074K8SXL8/ref=sr_1_fkmr1_2?s=automotive&ie=UTF8&qid=1522204403&sr=1-2-fkmr1&keywords=e46+transmission+intercooler+thermostat

I was able to remove the radiator without being about to tell the water pump had an issue. Installed the new radiator, gave my fan a wiggle and then knew I had replaced two hoses, an expansion tank, and a radiator for nothing. Cost: confidence as myself as a mechanic and an engineer and $295 (didn't replace the temp sensor or thermostat, and I was lucky enough to reuse the transmission intercooler thermostat!!!!!!11!1!!11!!)


I paid $90 for a pack of coils 40,000 miles ago. The entire CCV is $55, you guessed it, Amazon.

https://www.amazon.com/11617501566-11611432559-11617504535-11157532649-11617504536/dp/B00I3RBDDK/ref=sr_1_2?s=automotive&ie=UTF8&qid=1522204499&sr=1-2&keywords=e46+CCV


One pair of HID headlights - $28
https://www.amazon.com/gp/product/B01GRTEMCO/ref=oh_aui_search_detailpage?ie=UTF8&psc=1



For two years of ownership starting at 153,000 miles and currently at 197,000, 8 months of driving 110 miles a day, five days a week, and now I drive 800 miles a week.

The hardest on this list are the fuel filter (unless you have access to a lift, I hate putting my car on stands) and the CCV, to replace the CCV you have to remove the intake manifold.

The DISA takes 10 minutes if you take the time to drink a beer MAKE SURE YOU BUY A KIT THAT INCLUDES A NEW GASKET

If you have problems head to here or the forums, I feel like I've written a book, but I spent forever tracking a couple issues only to find out it was the plugs. Check the plugs first.




Essential tools:

OBD2 WIFI adapter: $20
https://www.amazon.com/gp/product/B00W0SDLRY/ref=oh_aui_search_detailpage?ie=UTF8&psc=1


Regular socket set: $73

https://www.amazon.com/Kobalt-64-piece-Standard-metric-Mechanics/dp/B00GR8WEDU/ref=sr_1_24?s=hi&ie=UTF8&qid=1522203667&sr=1-24&keywords=Kobalt+Socket+set

(5mm to 16mm or so, and includes bits you'll really want a wide flathead, Torx 25 or 30 for the cabin air filter mounting screws, and Philips, double check what this one includes)


Torque wrench: $35
https://www.amazon.com/Tacklife-Calibrated-13-6-108-5Nm-Certification-Extension/dp/B073VLDLQR/ref=sr_1_1_sspa?s=power-hand-tools&ie=UTF8&qid=1522203362&sr=1-1-spons&keywords=torque+wrench&psc=1


6”-8" Socket extension: $10
https://www.amazon.com/TEKTON-4966-8-Inch-Extension-3-Piece/dp/B000NW85F2/ref=sr_1_6?s=hi&ie=UTF8&qid=1522203436&sr=1-6&keywords=8%22+socket+extension


Fan removal tool set - $20
https://www.amazon.com/gp/product/B01MTV8EO4/ref=oh_aui_search_detailpage?ie=UTF8&psc150=1


Including all tools that's $850 Hope this helps, the car is really easy to work on, I enjoy driving it. One last piece of advice never short trip your car, especially in cold weather, you could fill the CCV with mayo and it could lead to hydrolocking/self destruction of the engine. If you live South of Pennsylvania you shouldn't have to worry too much, some people put an ounce or so of Seafoam into the CCV a month. You don't need to follow these links to the tee but they should help.