jnietling:
The year doesn't help necessarily.
There has been a real confusion with gas filters because Porsche changed the sizes around 1980. SC's can have a small filter or a big like yours but the fittings are the problem.
Some filters have different fittings like male/male, male/female, female/male, female/female.
The fuel goes to the Accumulator first, then through the filter.
You need to observe the direction of flow and may have to remove the fittings from the old filter and install them into the new one.
The filter I use is a Mahle KL 22 (PP part # 128-110-147-05-M67)
928-110-147-05-M67 Fuel Filter, (Mahle) 911 (1981-83)
Brand: Mahle Filter [Photo] [Photo] $21.00
It's the bigg filter like yours and I re-use the fittings as explained above.
This Mahle has a male fitting on top for the cap-nut in the line and a female fitting on the bottom which I change to a male fitting from the old filter for the cap-nut in the line.
See if you can use the fittings from the old filter to make the new one fit.
Keep the direction of flow.
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1980 Carrerarized SC with SS 3.2, LSD & Extras. SOLD!
1995 seafoam-green 993 C2, LSD, Sport seats.
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