Corvette RPO Codes On My C4
Greg | May 18, 2009Those of you reading this blog will know that I’m in the process of getting this 1989 Corvette back into service after a very long period of storage. Last night I became curious about what specific options this car had, so I snapped a photo of the RPO (Regular Production Option) sticker under the glove box and I looked up the codes. Below you’ll find a complete listing of the RPO codes for this car, which includes standard and optional equipment.

:: This photo, dated December, 2004, is the last time this car was outside - click to enlarge ::
Decoding this car revealed that it’s a relative low-optioned car, which makes sense considering its intended use when ordered. The car has the FE1 base suspension, which has softer spring rates and smaller anti-sway bars as compared to the Z51 suspension option. The Z52 cars kept the same spring rates as the FE1 cars, though they were equipped with larger anti-sway bars. The car also has the then-expensive Delco-Bose stereo system and fully electronic climate control. Base leather seats are, in my opinion, nicer than the upgraded sport leather seats. The 2:59 axle ratio would surely be great for highway cruising, though I wouldn’t expect much for acceleration - this is actually an unusually tall ratio. So here it is, the full RPO code list for this car:
• AC3 - Power driver sport seat
• AR9 - Base seats - leather
• AS8 - Manual restraint seats
• BGR - Bowling Green assembly
• CC3 - Transparent roof panel
• CF7 - Non-transparent roof panel
• C2L - Dual removable roof panels
• C68 - Automatic electronic air condition
• DL8 - Twin remote heated outside mirrors
• D7B - Speedometer driven gear 25513043 orange
• D74 - Illuminated driver vanity mirror
• D9A - Speedometer sensor 25007224
• E5Z - Delete speedometer adapter
• E9Z - Delete speedometer key
• FE1 - Base suspension
• GM1 - Rear axle 2.59 ratio
• JL9 - Anti-lock front and rear disc brakes
• K68 - 105 amp generator
• L98 - Tuned port injection 5.7 L engine
• MD8 - Automatic 4-speed transmission
• MX0 - Automatic transmission
• NA5 - Federal emission system requirements
• NK4 - Sport leather steering wheel
• QA1 - Styled aluminum wheels, 17 x 9.5″
• UQ4 - Delco Bose four speaker system
• UU8 - Delco Bose AM/FM stereo radio with cassette
• U52 - Electronic instrument cluster
• V73 - Vehicle statement certification, US or Canada
• WDV - Partial deductible warranty waiver
• XAU - Front tire P275/40 ZR17
• YAU - Rear tire P275/40 ZR17
• 1AZ - Modification stock order or order sold
• 1SB - Marketed option package 2
• 64S - Bronze roof panel





