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> 914/6 Oil Filter, 1976 2.7L CIS in 1975 914
Kansas 914
post May 8 2026, 07:25 AM
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I have conflicting information on the correct oil filter in my 914/6 conversion.

It is a 1975 with a 1976 2.7L CIS. It does have a 914/6 Oil tank.

I have been told Mahle OC54 and OC61. I have both on the shelf which confuses me more.

Thanks in advance - Mike
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DennisV
post May 8 2026, 08:49 AM
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QUOTE(Kansas 914 @ May 8 2026, 06:25 AM) *

I have conflicting information on the correct oil filter in my 914/6 conversion.

It is a 1975 with a 1976 2.7L CIS. It does have a 914/6 Oil tank.

I have been told Mahle OC54 and OC61. I have both on the shelf which confuses me more.

Thanks in advance - Mike

Isn't the correct filter dictated by which oil filter console (aka bracket or standoff) you have?

Stock 914-6 oil tank has 901-107-025-00 console, that would fit 901-107-203-09 filter. This is same as used on 1965-73 911s. Not sure which Mahle that would map to.
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smg914
post May 8 2026, 09:44 AM
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From what I understand either of those filters OC54 or OC61 will work on a stock 914-6. I use the red Purolator PC 34 (901.107.203.10) sold by Porsche Classic
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aturboman
post May 8 2026, 09:58 AM
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This is correct data. Here is a original 6 with the factory Purolator filter referenced. The car is running a 3.2. The stock oil tank dictates the filter needed. Recommendation is to use only Porsche filters, they have an internal bypass many aftermarkets do not.
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QUOTE(smg914 @ May 8 2026, 08:44 AM) *

From what I understand either of those filters OC54 or OC61 will work on a stock 914-6. I use the red Purolator PC 34 (901.107.203.10) sold by Porsche Classic
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Root_Werks
post May 8 2026, 10:39 AM
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Also have a 2.7 with stock 914-6 tank. Believe I run the OC61.
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sixnotfour
post May 8 2026, 11:11 AM
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depends on factory adapter ,,stock oc=61 ... there is a 911 , adapter that fits stock tanks and Bens, uses OC-54 .... thread size determines wich one..
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mskala
post May 8 2026, 12:54 PM
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For stock console, OC-61 is the right one. Lately, I've been pushed to OC-59
by (I think) pelican. Maybe OC-61 is discontinued.
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Kansas 914
post May 8 2026, 03:09 PM
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Thanks guys - you are the best - cheers!
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mb911
post May 8 2026, 04:04 PM
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A bunch of misinformation here. The correct filter for a stock console is oc61 and for the upgraded console like what I sell should use the oc54. It has zero to do with oil lines (IMG:style_emoticons/default/wacko.gif) it’s all about the console
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rick 918-S
post May 8 2026, 05:13 PM
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sixnotfour
post May 8 2026, 05:42 PM
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oil lines ??

Filter thread size yes.., 0C-61 smaller
0C-54 bigger
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sixnotfour
post May 8 2026, 07:03 PM
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left to right
early 911 /914-6... oc-61
72 only 911 ... oc-54
73 911... oc-54


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porschetub
post May 8 2026, 11:12 PM
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QUOTE(sixnotfour @ May 9 2026, 11:42 AM) *

oil lines ??

Filter thread size yes.., 0C-61 smaller
0C-54 bigger

Pelican say OC 54 is for 911 and 930 ,so that must be wrong as mine is stock tank and early 911 oil console and my new spare is OC 61 ...so what is the replacement number for that filter? is it OC 59 as suggested ? ,cheers.
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sixnotfour
post May 9 2026, 05:45 AM
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oc-59 is now oc-61
oc-54 later 911
But in the Conversion World ..factory parts could have been swapped around to Use either filter... ie. small thread / large thread Filters, and a possibility of why Mike has both...on the shelf ..

oc59 factory Six...yes
oc61 ..superceeded...
http://www.914world.com/bbs2/index.php?s=&...t&p=3093107
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Luke M
post May 9 2026, 07:15 AM
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QUOTE(mb911 @ May 8 2026, 03:04 PM) *

A bunch of misinformation here. The correct filter for a stock console is oc61 and for the upgraded console like what I sell should use the oc54. It has zero to do with oil lines (IMG:style_emoticons/default/wacko.gif) it’s all about the console



Like Ben said, All depends on the oil filter console that's mounted to your tank.
I know Ben and PMS made some oil filter consoles that take the OC54 filters.
I updated my oil filter console to take the later/larger oil filter OC54 and mounts on my factory 914-6 oil tank without any mods.
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sixnotfour
post May 9 2026, 11:44 PM
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QUOTE(Luke M @ May 9 2026, 07:15 AM) *

QUOTE(mb911 @ May 8 2026, 03:04 PM) *

A bunch of misinformation here. The correct filter for a stock console is oc61 and for the upgraded console like what I sell should use the oc54. It has zero to do with oil lines (IMG:style_emoticons/default/wacko.gif) it’s all about the console



Like Ben said, All depends on the oil filter console that's mounted to your tank.
I know Ben and PMS made some oil filter consoles that take the OC54 filters.
I updated my oil filter console to take the later/larger oil filter OC54 and mounts on my factory 914-6 oil tank without any mods.


So did Porsche (IMG:style_emoticons/default/confused24.gif)
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rgalla9146
post May 10 2026, 04:57 AM
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I don't have access to my parts right now.
Please correct me if I'm wrong.
Aren't the consoles identical with different interchangeable steel fitting to mount the
different filters ?
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Luke M
post May 10 2026, 07:10 AM
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QUOTE(sixnotfour @ May 9 2026, 10:44 PM) *

QUOTE(Luke M @ May 9 2026, 07:15 AM) *

QUOTE(mb911 @ May 8 2026, 03:04 PM) *

A bunch of misinformation here. The correct filter for a stock console is oc61 and for the upgraded console like what I sell should use the oc54. It has zero to do with oil lines (IMG:style_emoticons/default/wacko.gif) it’s all about the console



Like Ben said, All depends on the oil filter console that's mounted to your tank.
I know Ben and PMS made some oil filter consoles that take the OC54 filters.
I updated my oil filter console to take the later/larger oil filter OC54 and mounts on my factory 914-6 oil tank without any mods.


So did Porsche (IMG:style_emoticons/default/confused24.gif)



The factory did use the larger console but only for 1 or 2 years. They then went to the oil tanks that had the filter mount made into the tanks. I don't recall if you could just swap out the fittings to take the larger filter. The console maybe wider for the filter ?
I have both consoles so I'll take a look to confirm.
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sixnotfour
post May 10 2026, 07:18 AM
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QUOTE(rgalla9146 @ May 10 2026, 04:57 AM) *

I don't have access to my parts right now.
Please correct me if I'm wrong.
Aren't the consoles identical with different interchangeable steel fitting to mount the
different filters ?


Yes.. 911 73 only 74- next version of 911 oil tanks, have no adapter or pressure relief bypass that takes advantage of the OC-54 higher flow feature. Porsche step stone progress ...
Sorry for the non 914-6 notes .. But it started as a Converted 914-6 ..Yes Factory Tank.. But .. its a big world out there.. (IMG:style_emoticons/default/flag.gif)

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sixnotfour
post May 10 2026, 07:18 AM
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