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Oil Filter Relocation Kit for a Mercruiser 4.3LX Motor


I have a mercruiser 4.3LX engine in my 1994 Rinker boat that uses a STP S3980 or AC Delco PF52 oil filter. Is there an oil filter relocation kit that would work with this boat? Thanks


Expert Reply:

Based on the filter numbers you have provided I was able to determine that the threaded part of the motor is 18mm x 1.5mm where the filter installs. But it indicates that it is a special 18mm x 1.5mm. I do not know what that means; whether the threads are reverse threaded or something else. I can tell you that the oil filter relocation kits install on regular threads and none designed for alternative thread styles. The STP filter just indicates M18x1.5 thd. so that appears to be normal.

I also found that the o-ring outer diameter for those filters is 2-3/4 inches. We do have a kit that threads onto 18mm x 1.5mm and has a 2-3/4 inch O-ring. It is # D15717.

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