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Old 10-19-2014, 09:02 AM   #1
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Replacement engine numbers 1998 Boxster

i was performing some maintenance on my 98 boxster last weekend and noticed my engine stamp had an unusual looking "R" on the end of the series. I am the fourth owner of this boxster but the previous owners failed to include maintenance records.
Does the "R" stand for replacement ?

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Old 10-19-2014, 09:22 AM   #2
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I believe that is the part number for the valve cover.

Your engine number will look like this.

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Old 10-19-2014, 09:38 AM   #3
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Originally Posted by Paul Ri-Chard View Post
i was performing some maintenance on my 98 boxster last weekend and noticed my engine stamp had an unusual looking "R" on the end of the series. I am the fourth owner of this boxster but the previous owners failed to include maintenance records.
Does the "R" stand for replacement ?
No, you are looking at a part number, not the engine number. And if it were a factory replacement engine, it would contain the letters "AT".
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Old 10-19-2014, 10:42 AM   #4
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Originally Posted by Chuck W. View Post
I believe that is the part number for the valve cover.

Your engine number will look like this.

The engine stamp serial # is viewed from top or bottom or bottom of engine. Near tranny or starter as in your picture ?
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Old 10-19-2014, 10:49 AM   #5
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The engine stamp serial # is viewed from top or bottom or bottom of engine. Near tranny or starter as in your picture ?
It is on the oil sump rail.
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Old 10-19-2014, 11:28 AM   #6
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Quote:
It is on the oil sump rail.
In case, like me he's not sure what an 'Oil Sump Rail' is:

That's the bottom of the engine, right side. It is just forward of where the O2 sensor sticks out from the exhaust.
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Old 10-19-2014, 12:36 PM   #7
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In case, like me he's not sure what an 'Oil Sump Rail' is:

That's the bottom of the engine, right side. It is just forward of where the O2 sensor sticks out from the exhaust.
And, it will most likely gunked over. Look for a flat spot and rub there.
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Old 10-19-2014, 11:30 PM   #8
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Got it, thank you !😊
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Old 10-20-2014, 07:18 AM   #9
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It can also have an "X" in the number to identify a reman engine.
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Old 10-20-2014, 07:38 AM   #10
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The "R" stands for "Race" and should be always painted red.

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