Accessory ~ Fremont & Oshawa

Similar to group option codes on other 1965 plants but Fremont & Oshawa used the Regular Production Option (RPO) code. Canada also lists the convertible top code here if applicable. I've seen formats like TOP-2, TP-2, T-02, etc. for a black convertible top or TOP10 for a white convertible top.

Common RPO codes found include:
A49 - Front seat belt with retractor (Fremont)
B70 - Instrument Panel Pad (Fremont & Oshawa)
C06 - Folding Electric Top (Oshawa)
M20 - 4-speed transmission (Oshawa)
M35 - Powerglide transmission  (Oshawa)

Group Options ~ Baltimore & Kansas City (Euclid Fisher Body Plant Only)

Although the Baltimore final assembly plant did not use Group Option Codes the Euclid Fisher Body plant did use these codes on Chevelles destined for both Baltimore & Kansas City for final assembly.

Codes are listed by group and in alphabetical order within the group.

If you know of any codes not listed here, please email me with details - (1) year, (2) body date, (3) plant, (4) group number, (5) letter code, (6) option if known, and a photo of the tag would be appreciated.

Group 1 - No number precedes Group 1
D ~ Power top [RPO C06]E ~ Tinted glass (all) [RPO A01]
F ~ Power bench seat [RPO A41]G ~ Power tailgate [RPO A33]
W ~ Tinted windshield (only) [RPO A02]X ~ Power windows [RPO A31]
B ~ unknown - found on several Euclid El Camino for Baltimore 
  
Group 2 - preceded by the number "2"
K ~ Air conditioning [RPO C60]L ~ 4-speed transmission [RPO M20]
M ~ Powerglide transmission [RPO M35]P ~ Comfort & Convenience group [RPO Z01/Z13] ***
R ~ Rear speaker [RPO U80] *S ~ Rear antenna [RPO U73] **
Y ~ Unknown - found on 2-tone paint tags from Kansas CityU ~ Unknown *****
  
Group 3
C ~ Padded dash [RPO B70] 
  
Group 4
F ~ Comfort & Convenience group [RPO Z01/Z13] ***
 
  
Group 5
V ~ Seat belt equipment [RPO A37] (Discontinued 2/64)W ~ Custom deluxe seat belts with retractors [RPO A49]
O ~ Unknown **** 

* There is no reported RPO U80 rear seat speaker shown for 1964.  Rather RPO Z02 is listed as PUSH BUTTON RADIO AND AUXILIARY SPEAKER. U80 is shown here for consistency with 1965-1967 group codes.

** There is no reported RPO U73 rear antenna shown for 1964. Rather RPO U60 and RPO U63 radios both show front antenna or rear antenna depending on which code was ordered by the dealer. U73 is shown here for consistency with 1965-1967 group codes.

*** RPO Z01 is Type A (Malibu/Malibu SS) and Z13 is Type B (300) with difference being the remote mirror is included with Type A.
Found on 017, 028, N27 Kansas City trim tag
Found on 10A Atlanta trim tag
Found on 10C Van Nuys trim tag

**** Found on 2B Van Nuys sport coupe, 06C KC Malibu sport coupe, 05D Atlanta Malibu SS convertible with body built at Euclid, 05B Custom El Camino body built at Euclid.

***** Found on 03C KC Malibu SS sport coupe tag