Exhaust header differences and part numbers – Honda CX500, GL500, CX650, GL650

Here are the part numbers for the various CX/GL models and their exhaust headers – note that CX/GL 650 and CX/GL500 headers are not interchangeable as there are diameter and angle differences.

 

 

Model Left No. Right No. H-box No.
CX500 1978 18420-415-003 18320-415-003
18320-415-610
18310-415-003
GL650 and GL650I 18420-ME2-003
18420-ME2-610
18320-ME2-003 18310-ME2-003
18310-ME2-610
18310-MG0-003
GL500 and GL500I 18420-415-003 18320-415-003 18310-MA1-003

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