What size torx bolt to take off belt tensioner? E14 or E16?

BimmerNugget · 08-08-2018, 10:11 PM

I'll be replacing my serpentine belt, belt tensioner, and idler pulley soon. Just wondering what size torx bolt the belt tensioner is held in by. I know to release the tension it's a T60 torx. But what about the bolt to take out the actual tensioner?

I heard conflicting things, is it E14 or E16? Also what size is the idler pulley bolt? Thanks

weehe126 · 08-09-2018, 09:54 AM

Pretty sure both the tensioner bolt and pulleys are T50.

AoS810 · 08-09-2018, 12:47 PM

I thought it was a T60? If it's T50 I bought the wrong size, poop.

BimmerNugget · 08-09-2018, 12:57 PM

Quote:

Originally Posted by AoS810

I thought it was a T60? If it's T50 I bought the wrong size, poop.

Pelican parts and most youtube DIYs say it's a T60 torx to counter the tension spring. I have seen some DIY guides say it's a T55, but never heard of T50.

I trust Pelican Parts, they've never done me dirty before. So I went ahead and ordered a T60 already.

Anyone know the size of the E-torx to get off the actual tensioner assembly?

TheMidnightNarwhal · 08-09-2018, 01:02 PM

Quote:

Originally Posted by BimmerNugget

Pelican parts and most youtube DIYs say it's a T60 torx to counter the tension spring. I have seen some DIY guides say it's a T55, but never heard of T50.

I trust Pelican Parts, they've never done me dirty before. So I went ahead and ordered a T60 already.

Anyone know the size of the E-torx to get off the actual tensioner assembly?

I mean T55 probably fits in OK to if it's actually T60.

Why not just buy a whole set? Your T60 must be like 10$ on it's own and a set is what, 20$ to 40$ ?

BSM n54iS · 08-09-2018, 05:10 PM

Ya seriously, just get the set going up to T60 and you'll be fine for future DIY's where you'll certainly need them..

9krpmrx8 · 08-09-2018, 05:18 PM

Yeah and make sure it is the right one and is a tight fit because I have seen a few people strip them. I hate the stupid torx shit though.

CTinline-six · 08-09-2018, 07:56 PM

Just went out to the garage and checked... a T60 is needed to release the belt tension, and an E14 socket will unbolt the tensioner assembly from the block.

weehe126 · 08-09-2018, 08:29 PM

I was meaning the bolt holding the tensioner to the block was a T50. Literally just did it on my N55, so might be different on a N52. To release the belt tension it is a T60.

This set is the shit, highly recomended:
https://www.sears.com/schwaben-8-pie...FY2LaQodn_IN9Q

mecheng77 · 08-09-2018, 08:43 PM

I had to buy this because the set I had didn’t have the t60, it has everything you need. Made in Taiwan and good quality

Neiko 10071A Torx Bit T-Socket Set, Cr-V 13-Piece https://www.amazon.ca/dp/B000J0TF6G/..._F1oBBbW023ZMS

Bali · 08-09-2018, 09:28 PM

This set seems to have the full gamut of sizes.
https://rover.ebay.com/rover/0/0/0?m...2F282275441171

BimmerNugget · 08-09-2018, 09:30 PM

Quote:

Originally Posted by CTinline-six

Just went out to the garage and checked... a T60 is needed to release the belt tension, and an E14 socket will unbolt the tensioner assembly from the block.

Thanks Josh!

BimmerNugget · 08-09-2018, 09:34 PM

Quote:

Originally Posted by TheMidnightNarwhal

I mean T55 probably fits in OK to if it's actually T60.

Why not just buy a whole set? Your T60 must be like 10$ on it's own and a set is what, 20$ to 40$ ?

Good idea, but my T60 3/8th inch drive was only $3.99 with free 2 day shipping

. Thank you AMAZON!

08-08-2018, 10:11 PM	#1
BimmerNugget Crazy Frog 543 Rep 1,211 Posts Drives: L.L.Bean Bootmobile Join Date: Jun 2017 Location: 560 State Street iTrader: (0)	What size torx bolt to take off belt tensioner? E14 or E16? I'll be replacing my serpentine belt, belt tensioner, and idler pulley soon. Just wondering what size torx bolt the belt tensioner is held in by. I know to release the tension it's a T60 torx. But what about the bolt to take out the actual tensioner? I heard conflicting things, is it E14 or E16? Also what size is the idler pulley bolt? Thanks __________________ www.youtube.com/watch?v=k85mRPqvMbE
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08-09-2018, 09:54 AM	#2
weehe126 Brigadier General 1161 Rep 3,189 Posts Drives: 2017 340i Join Date: Apr 2014 Location: San Antonio iTrader: (2)	Pretty sure both the tensioner bolt and pulleys are T50.
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08-09-2018, 12:47 PM	#3
AoS810 Lieutenant 97 Rep 414 Posts Drives: 2008 E90 N51, 2011 E91 N52 Join Date: Oct 2009 Location: Los Angeles, CA iTrader: (6)	I thought it was a T60? If it's T50 I bought the wrong size, poop.
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08-09-2018, 05:10 PM	#6
BSM n54iS Brigadier General 2685 Rep 4,202 Posts Drives: '11 335is \| '16 Macan Turbo Join Date: Aug 2015 Location: Everywhere and Nowhere iTrader: (7)	Ya seriously, just get the set going up to T60 and you'll be fine for future DIY's where you'll certainly need them.. __________________ '11 335is BSM MT "BMW Performance Editon" \| '16 Porsche Macan Turbo GruppeM CF Intake \| AR Resonated DP \| ER CP \| Turbosmart RacePort BOV \| Cobb FMIC \| RB Inlets \| RB External Mishi/Turner OCC \| Michelin PS4 \| BMW Performance Springs/Bilstein B8 + Dinan & M3 bits \| BMW Brembo BBK \| BMW Performance CF Spoiler \| BMW Performance CF Lip \| BMW Performance Alcantara \| PS Designs GTS Armrest \| AG H6-40 \| Rear Seat Delete
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08-09-2018, 05:18 PM	#7
9krpmrx8 Clean is the new cool, keep it that way. 808 Rep 1,685 Posts Drives: 11' Alpine White 335i Sedan Join Date: Jan 2016 Location: San Antonio, Texas iTrader: (0)	Yeah and make sure it is the right one and is a tight fit because I have seen a few people strip them. I hate the stupid torx shit though. __________________ 2011 335i, FBO, N55+ Turbo, full E85, S55 intercooler, etc. 2015 X5 35i Xdrive
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08-09-2018, 07:56 PM	#8
CTinline-six Hoonigan 6851 Rep 3,000 Posts Drives: '09 328i, '98 Wrangler Join Date: Dec 2016 Location: Connecticut iTrader: (0) Garage List 2009 BMW 328i N51 [0.00]	Just went out to the garage and checked... a T60 is needed to release the belt tension, and an E14 socket will unbolt the tensioner assembly from the block. __________________ "Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should." -Dr. Ian Malcolm, Jurassic Park
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08-09-2018, 08:29 PM	#9
weehe126 Brigadier General 1161 Rep 3,189 Posts Drives: 2017 340i Join Date: Apr 2014 Location: San Antonio iTrader: (2)	I was meaning the bolt holding the tensioner to the block was a T50. Literally just did it on my N55, so might be different on a N52. To release the belt tension it is a T60. This set is the shit, highly recomended: https://www.sears.com/schwaben-8-pie...FY2LaQodn_IN9Q
	Appreciate 0 Quote

08-09-2018, 08:43 PM	#10
mecheng77 Colonel 1006 Rep 2,243 Posts Drives: 2007 328i / 2014 M235i Join Date: Nov 2017 Location: Ontario Canada iTrader: (0) Garage List [0.00] [0.00]	I had to buy this because the set I had didn’t have the t60, it has everything you need. Made in Taiwan and good quality Neiko 10071A Torx Bit T-Socket Set, Cr-V 13-Piece https://www.amazon.ca/dp/B000J0TF6G/..._F1oBBbW023ZMS
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08-09-2018, 09:28 PM	#11
Bali E46 Fanatic 42 Rep 152 Posts Drives: E46 E84 F15 Join Date: Aug 2014 Location: Riverside, CA iTrader: (0)	This set seems to have the full gamut of sizes. https://rover.ebay.com/rover/0/0/0?m...2F282275441171
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