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HONDA
PARTS NUMBERING SCHEME |
What is a product code you
ask?
Well Honda has a great way
of dealing with part identification,
and it basically works like
this: all Honda part numbers
come in three sections example:
91029-357-004. The first
set of numbers are really
the part number, the second
set of numbers tells which
model the PART WAS ORIGINALLY
INTRODUCED ON, and the third
set usually tells what "generation",
color or improvement number.
For example, 357 tells me
this part originally was
for a 1973-74 CR250M motorcycle.
004 usually means that this
is the fourth improvement
on this part. that last set
of numbers can also look
like this: 000 means first
production, 101, means second,
020 means third and so on,
get it?
So what is a 91029-357-004?
Well its the bearing that
supports the clutch basket
on the mainshaft. Does 357
mean that this part will
only fit on the 73-74 CR250M?
ABSOLUTELY NOT!!! This part
can be used on MT250's, MR250's
and other too. Be warned,
that this part may be used
on MANY APPLICATIONS!!.
The best way to find out
this info is to give the
part number to a cool honda
dealer who will run the parts
for you, giving its blanket
coverage. The numbers below
are the MIDDLE NUMBERS of
the 3 section part number.
All parts on a Honda motorcycle
have a unique part number.
Honda divides parts into
two broad categories, General
Parts and Standard Parts.
General parts are those unique
to Honda, such as valves,
pistons, gas tank etc. Standard
parts are parts that follow
universal standards, such
as nuts, bolts and such.
Note that some pretty universal
parts are still listed under
General Parts number. For
example most (all?) TL oil
seals carry a general parts
number. Luckily Honda parts
fiche lists the actual dimensions
for parts like this.
General parts have a part
number divided into 3 sections,
such as 22201-166-000 (clutch
friction plate for the TL125).
• The first string
of digits (22201-XXX-XXX)
indicates the Honda function
and component number for
this part. For example, there
are several different part
numbers for the TL clutch
friction plate, all sharing
funtion/component number
22201. Clutch steel plates
have f/c code 22311, indicating
same function but different
component.
• The second string
of digits (XXXXX-166-XXX)
is the product code, also
known as Parts Classification
Number in hondaspeak. This
is the number that indicates
the product (motorcycle)
where this particular part
was first used. See below
for a complete listing of
older Honda product codes.
166 indicates that the TL
clutch friction plates where
first used in Honda MB5 motorcycle.
Honda often lists several
different part numbers for
the same part, indicating
slight differences in the
part, such as different supplier
etc. For example there are
four different part numbers
listed for the clutch friction
plates.
All TL125 models (1973
K, 1974 K1, 1975 K2 and 1976
S) share the product code
355. All General parts having
a different product code
are "recycled" from
other Honda models. Only
parts with code 355 were
originally designed for the
TL125, but may have been
used in later Honda models.
The product code is probably
the most interesting portion
of the part number when trying
to determine interchangeability
of Honda parts between various
models.
• The third string
of digits (XXXXX-XXX-000)
is the Classification Number.
I believe it is mostly used
to indicate various suppliers
or improvements for the same
part. Also any potential
color code is tacked at the
end of the classification
number as digits (letters)
4 & 5.
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