Sample of Engine ID's
Beginning in 2000 the gas engines are painted red again. The naming system was also changed. The first part of the name is the same as the charcoal engines, up to the letters for the fuel system.
Examples:
1.) The two numbers are the displacement.
2.) Next is a letter that indicates who made the base engine.
G = GM
F = Ford
OS = Volvo Penta's new Ocean Series sterndrives
3.) After that, one or two letters that note the fuel system and/or output.
L = limited
s = superior
X = exceptional
i = fuel injected (no I means carbureted). (may be lowercase or capital)
4.) For 3.0L only, there is an M or P for the steering
5.) For Inboard engines only, there is an I after the lower case i.
Then a dash ( -) followed by a one or two letter suffix. This is the major change from the charcoal engines.
6.) The first letter is the version control, this is present on all current engines.
-A is the first version
-B is the second version, etc...
There is no link between the suffix and production years.
All engines with -A were not built the same year.
A 5.7GXi-B and a 5.0GXi-B are not similar.
A 4.3GL-D is newer than and different from a 4.3GL-C.
7.) The second letter, if present is always an F, it notes that the engine is freshwater cooled.
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