With the advent of cheap Chinese aftermarket parts hitting the Gbody market there are a number of reproduced '83 H/O header emblems out there now.
Unless you have a trained eye the easiest way to start to ID a fake is if the back has threads on the large stud, later NOS '83's did have these threads as well but you can still use this as a starting point.
GM used orange covered two sided 3M tape and one Pal nut on the thin stud, originally the thick stud did not have threads and was used as a guide however later NOS units had received threads.
The first photo is the of a REAL emblem and is used, the next two are reproductions, the fourth photo is of a late NOS '83, the fifth is an early original NOS '83 and the last is an NOS '84 H/O header emblem.
Another dead giveaway is GM units were somewhat curved to fit the contour of the header panel, as you can see in the second and third photo they are flat and are missing the correct punch cut orange covered 3M tape.
Reproductions will have sharp font, especially noticeable in the 'A' and 'v'.
Be careful who you buy parts from on eBay and in the aftermarket... I've caught several people passing off repro decals, grilles, bezels and emblems off as GM parts.
USED '83 H/O
$(KGrHqMOKogE4t9gnok)BOUr(D(,TQ~~48_3.JPG
REPRODUCED '83 H/O
$(KGrHqYOKosE3FRJjW1(BNyNfnbc+Q~~_3.JPG
REPRODUCED '83 H/O notice the flat contour

$(KGrHqV,!oUFE(3ydblOBRHGHYoFFg~~60_57.jpg
NOS '83 H/O - notice the curved contour

$(KGrHqR,!pgFBYBm!81vBQd5mBRm7w~~60_57.jpg
NOS '83 H/O
NOS83HO2.jpg
NOS '84 H/O
NOS 84 HO header emblem.jpg
NOS 1983 H/O, notice the rounded font
Screenshot_20230530-204826_Samsung Internet.jpg
Reproduced 1983 H/O, notice the sharp font
Screenshot_20230530-204558_Samsung Internet.jpg
Unless you have a trained eye the easiest way to start to ID a fake is if the back has threads on the large stud, later NOS '83's did have these threads as well but you can still use this as a starting point.
GM used orange covered two sided 3M tape and one Pal nut on the thin stud, originally the thick stud did not have threads and was used as a guide however later NOS units had received threads.
The first photo is the of a REAL emblem and is used, the next two are reproductions, the fourth photo is of a late NOS '83, the fifth is an early original NOS '83 and the last is an NOS '84 H/O header emblem.
Another dead giveaway is GM units were somewhat curved to fit the contour of the header panel, as you can see in the second and third photo they are flat and are missing the correct punch cut orange covered 3M tape.
Reproductions will have sharp font, especially noticeable in the 'A' and 'v'.
Be careful who you buy parts from on eBay and in the aftermarket... I've caught several people passing off repro decals, grilles, bezels and emblems off as GM parts.
USED '83 H/O
$(KGrHqMOKogE4t9gnok)BOUr(D(,TQ~~48_3.JPG
REPRODUCED '83 H/O
REPRODUCED '83 H/O notice the flat contour
$(KGrHqV,!oUFE(3ydblOBRHGHYoFFg~~60_57.jpg
NOS '83 H/O - notice the curved contour
$(KGrHqR,!pgFBYBm!81vBQd5mBRm7w~~60_57.jpg
NOS '83 H/O
NOS '84 H/O
NOS 84 HO header emblem.jpg
NOS 1983 H/O, notice the rounded font
Screenshot_20230530-204826_Samsung Internet.jpg
Reproduced 1983 H/O, notice the sharp font
Screenshot_20230530-204558_Samsung Internet.jpg
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