Honda Part Numbering System

As Used in the Parts Catalogs

General parts:

XXXXX - XXX - XXX(XX)
Function Number

XXXXX - XXX - XXX(XX)
Component Number

XXXXX - XXX - XXX(XX)
Parts Classification Number
(These numbers relate to the Product Code of the first Honda motorcycle model to use a particular part; if the same part is subsequently used on another model, the Parts Classification Number generally remains unchanged. Some of these numbers are listed here. For more information, see the Parts Interchange Info page.)

XXXXX - XXX - XXX(XX)
Modification Designation

XXXXX - XXX - XXX(XX)
Subcontractor Designation

XXXXX - XXX - XXX(XX)
Color Code (if any)
(Part number color codes do not necessarily correspond to the Honda motorcycle paint codes listed here; they are keyed to the Honda paint codes listed in the relevant Description section of the Parts Catalog.)

Bolts, nuts and other standard parts:

XXXXX - XXXXX - (XX)
Function Number

XXXXX - XXXXX - (XX)
Type Number

XXXXX - XXXXX - (XX)
Dimensions
(Dimensions of many common parts are reflected in this section of the part number—see Dimensions below.)

XXXXX - XXXXX - (X)(X)
ISO Standard Designation (if any)

XXXXX - XXXXX - (X)(X)
Chemical Surface Treatment (if any)

Common abbreviations:

ASSY.	Assembly
COMP.	Complete
R.	Right
L.	Left
STD.	Standard
MM	Millimeter
G	Gram
T (22T)	Tooth (22 Teeth)
A	Ampere
V	Volt
W	Watt
WL	With labelling
WOL	Without labelling
KPH	Kilometers per hour
L.E.D.	Light emitting diode
MPH	Miles per hour
L (100L)	Link (100Links)
A.C.	Alternating current
D.C.	Direct current
IN.	Intake
EX.	Exhaust
FR.	Front
RR.	Rear
HEX.	Hexagonal
A.M.	Attaching mark
T.M.	Transcript mark
C.D.I.	Capacitive discharge ignition

Dimensions:

Parts	Example	Interpretation
Bolt (screw)	6 x 12	6mm diameter, 12mm length
Pin	8 x 14	8mm diameter, 14mm length
O-ring	9.5 x 1.6	9.5mm diameter, 1.6mm thickness
Oil seal	14 x 24 x 5	14mm inside diameter, 24mm outside diameter, 5mm thickness
Tube	5 x 130	5mm inside diameter, 130mm length