Tail light lens CEV 127 (to fit tail light CEV 9313)
Moto Guzzi V700, V7 Special, Ambassador, 850 GT, 850 GT California, Eldorado, and 850 California Police models
If your round tail light lens needs to be replaced, you may find it difficult to find a suitable replacement that looks close to original. I have seen New Old Stock (NOS) CEV tail light lenses go for upwards of USD $60.00 on ebay...too steep for a hunk of plastic in my opinion.
Fortunately, there is a very-close replacement that can be purchased at your local Walmart. It is a
Universal Stop, Turn and Tail Light that is manufactured by Peterson Manufacturing Company. The model number is 428. The package comes complete with the entire light, but the lens itself is all you need (the lens part number is 420-15, if you can find it - Bob Taylor informed me the lenses are available at Northern Tool). It screws right on to your stock CEV tail light.