Part Number for ESS-625 K&N Air Filter

Jitoo · 02-23-2018, 10:54 AM

Hi,

My Air filter fell off when I hit a small animal.

Anybody here know the Part Number for ESS-625 K&N Air Filter?

I wanted to order from ESS but they want to charge $40 just for shipping a simple 2 pound Air Filter and think it is daylight robbery. Just out of principle I will not order it from them.

Thanks

Iyzmi · 02-23-2018, 11:41 AM

K&N RE-0920

and

K&N RE-0810PK

Properstyle · 02-23-2018, 11:46 AM

Quote:

Originally Posted by Jitoo

Hi,

My Air filter fell off when I hit a small animal.

Anybody here know the Part Number for ESS-625 K&N Air Filter?

I wanted to order from ESS but they want to charge $40 just for shipping a simple 2 pound Air Filter and think it is daylight robbery. Just out of principle I will not order it from them.

Thanks

I will post mine when I get to the house.

azndrunk74 · 02-23-2018, 05:36 PM

I bought a new K&N RE-0920 from amazon for $50 shipped. Fit perfect.

eatsleepboost · 02-23-2018, 05:57 PM

Just looked at my k&n box as I installed a 625 kit a few days ago. RU-1785. They are on Amazon for 55$ with free shipping for prime.

azndrunk74 · 02-23-2018, 06:03 PM

Quote:

Originally Posted by eatsleepboost

Just looked at my k&n box as I install a 625 kit a few days ago. RU-1785. They are on Amazon for 55$ with free shipping for prime.

Interesting that they changed to a slightly shorter round straight filter versus cone. Probably fits better, the cone filter is a tight fit against the fender liner.

eatsleepboost · 02-23-2018, 06:34 PM

The filter is a pretty tight fit for sure. I don't know if they changed the intake pipe or replacement duct at all. Side note does anybody run the sock on the filter? I was thinking of finding one for it.

S65B40YYC · 03-13-2018, 08:38 AM

I personally would never run a filter that is susceptible to getting soaked without a water resistant sock. These are around $20.00...

Iyzmi · 03-13-2018, 09:26 AM

Has anyone tried both the RU-1785 and RE-0920? Any improvement in fitment or does the RU-1785 still push up against the fender liner?

azndrunk74 · 03-13-2018, 05:49 PM

Quote:

Originally Posted by Iyzmi

Has anyone tried both the RU-1785 and RE-0920? Any improvement in fitment or does the RU-1785 still push up against the fender liner?

i assume the RU-1785 is going to fit a lot better. it's 3.5" straight through versus 4.625" tapering to 3.5" for the RE-0920. that should improve some clearance issues. i haven't tried it personally though.

Iyzmi · 03-14-2018, 07:17 AM

Quote:

Originally Posted by Datka

This is what you should be installing:K&N RF-1040 Universal Clamp-On Air Filter

That doesn't even look close. Do you have pics of that on the car?

eatsleepboost · 03-14-2018, 08:04 AM

How is that the part "you should be installing" when I received a brand new kit from ESS with a RU-1785 weeks ago. Clearly ESS doesn't make their kit for that filter.

eatsleepboost · 03-14-2018, 01:04 PM

After searching for a filter sock for the RU-1785 I found it. I contacted k+n and they do not have one but reffered me to Outerwears. 20-1938 is the part number for the Outerwears sock if anybody wants it. I am getting it to repel the water from my now low hanging filter.

Iyzmi · 03-14-2018, 01:09 PM

Quote:

Originally Posted by eatsleepboost

After searching for a filter sock for the RU-1785 I found it. I contacted k+n and they do not have one but reffered me to Outerwears. 20-1938 is the part number for the Outerwears sock if anybody wants it. I am getting it to repel the water from my now low hanging filter.

Good tip. Where are you buying it from? I don't see it on Amazon.

eatsleepboost · 03-14-2018, 02:53 PM

Quote:

Originally Posted by Iyzmi

Good tip. Where are you buying it from? I don't see it on Amazon.

Straight off their website. 23$. Available in a bunch of colors.

https://www.outerwears.com/proddetail.asp?prod=7450

B8bydesign · 01-05-2022, 12:09 PM

I know the thread is a couple years old, but I reached back out to ESS and K&N to make sure the information above is still accurate. RU-1785 is still the correct K&N filter part number and K&N still recommends the Outerwears filter sock as they still don't make one for it.

02-23-2018, 10:54 AM	#1
Jitoo Private 18 Rep 85 Posts Drives: BMW M3 E46 Join Date: Oct 2013 Location: Alpharetta iTrader: (1)	Part Number for ESS-625 K&N Air Filter Hi, My Air filter fell off when I hit a small animal. Anybody here know the Part Number for ESS-625 K&N Air Filter? I wanted to order from ESS but they want to charge $40 just for shipping a simple 2 pound Air Filter and think it is daylight robbery. Just out of principle I will not order it from them. Thanks
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02-23-2018, 11:41 AM	#2
Iyzmi Lieutenant Colonel 802 Rep 1,566 Posts Drives: E92 M3 6MT ESS625 Join Date: Sep 2014 Location: Midwest iTrader: (1)	K&N RE-0920 and K&N RE-0810PK __________________
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02-23-2018, 05:36 PM	#4
azndrunk74 Major 612 Rep 1,326 Posts Drives: Frozen Black F10 M5 Join Date: Nov 2012 Location: Bay Area, CA iTrader: (13)	I bought a new K&N RE-0920 from amazon for $50 shipped. Fit perfect. __________________ 2014 Frozen Black F10 M5 \| Agency Power HFC Downpipes \| Custom Open Flash Stage 2 Tune \| KW HAS kit \| 3D Design Lip \| 3D Design Skirts \| 3D Design Spoiler \| IND Front & Rear Reflectors \| IND M5 Badge \| M Performance Steering Wheel \| M Performance CF Shift Knob \| Pedal Haus Pedals & Paddles \| Turner Exhaust \|
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02-23-2018, 05:57 PM	#5
eatsleepboost Captain 420 Rep 656 Posts Drives: Evo Join Date: Aug 2017 Location: Boston iTrader: (1)	Just looked at my k&n box as I installed a 625 kit a few days ago. RU-1785. They are on Amazon for 55$ with free shipping for prime. Last edited by eatsleepboost; 02-23-2018 at 06:31 PM..
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02-23-2018, 06:34 PM	#7
eatsleepboost Captain 420 Rep 656 Posts Drives: Evo Join Date: Aug 2017 Location: Boston iTrader: (1)	The filter is a pretty tight fit for sure. I don't know if they changed the intake pipe or replacement duct at all. Side note does anybody run the sock on the filter? I was thinking of finding one for it.
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03-13-2018, 08:38 AM	#8
S65B40YYC Private First Class 35 Rep 146 Posts Drives: 08' E93 M3 Join Date: Mar 2014 Location: YYC iTrader: (0)	I personally would never run a filter that is susceptible to getting soaked without a water resistant sock. These are around $20.00...
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03-13-2018, 09:26 AM	#9
Iyzmi Lieutenant Colonel 802 Rep 1,566 Posts Drives: E92 M3 6MT ESS625 Join Date: Sep 2014 Location: Midwest iTrader: (1)	Has anyone tried both the RU-1785 and RE-0920? Any improvement in fitment or does the RU-1785 still push up against the fender liner? __________________
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03-14-2018, 08:04 AM	#12
eatsleepboost Captain 420 Rep 656 Posts Drives: Evo Join Date: Aug 2017 Location: Boston iTrader: (1)	How is that the part "you should be installing" when I received a brand new kit from ESS with a RU-1785 weeks ago. Clearly ESS doesn't make their kit for that filter.
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03-14-2018, 01:04 PM	#13
eatsleepboost Captain 420 Rep 656 Posts Drives: Evo Join Date: Aug 2017 Location: Boston iTrader: (1)	After searching for a filter sock for the RU-1785 I found it. I contacted k+n and they do not have one but reffered me to Outerwears. 20-1938 is the part number for the Outerwears sock if anybody wants it. I am getting it to repel the water from my now low hanging filter.
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01-05-2022, 12:09 PM	#16
B8bydesign Lieutenant Colonel 680 Rep 1,527 Posts Drives: '11 BMW M3 Join Date: Jun 2011 Location: Charlotte, NC iTrader: (10) Garage List 2011 BMW M3 [10.00]	I know the thread is a couple years old, but I reached back out to ESS and K&N to make sure the information above is still accurate. RU-1785 is still the correct K&N filter part number and K&N still recommends the Outerwears filter sock as they still don't make one for it. __________________ New: '11.5 e90 M3 \| DCT \| Space Gray/Novillo \| ZCV \| ZCW \| ZP2 \| ESS 625 \| BPM \| M Performance \| iPE \| BC Racing \| BPM \| iND \| LUX \| Volk \| Coby \| Recaro Sold: '11.5 e92 M3 \| DCT \| Mineral White/Novillo \| ZCP \| ZCV \| ZCW \| ZP2 \| M Performance \| ACM \| BPM \| iND \| Thule \| LUX \| Macht Schnell \| Broadway Static \| Rogue Engineering \| BBS \| Challenge \| Metak
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