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Print in friendly format Send this term to a friend  Z25
Refers to 1993 Anniversary Editions; also known as Ruby.

These are the actual cars honored as anniversary cars.

They have RPO Z25 to prove it....
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C4: 1984-1996  > C4 Technical
(1) 2 3 4 ... 104 »
   Topics Replies Views Last Post
The topic has been Stickyed. C4 Technical FAQ and Summary
 by bogus
24 53371 2015/2/5 17:16
by CentralCoaster
The topic has been Stickyed. How to check diagnostic trouble codes (DTCs) or diagnose service engine soon (SES) light.
 by Matatk
5 11820 2014/10/13 19:23
by BrianCunningham
The topic has been Stickyed. Pete's Transmission Threads
 by bogus
20 13286 2014/8/5 15:13
by bogus
The topic has been Stickyed. [Announcement] Guru Tech Library
 by bogus
9 8558 2013/12/21 17:39
by Matatk
The topic has been Stickyed. Trouble codes. Topic has Attachments
 by captmike13
12 12935 2013/6/10 22:03
by bogus
The topic has been Stickyed. C4 Common Part Numbers Topic has Attachments
 by Matatk
17 20511 2012/9/2 18:42
by Matatk
The topic has been Stickyed. C4 Tech - Corvette Publications
 by bastet44
8 8524 2010/9/3 21:35
by biggrizzly
The topic has been Stickyed. LT1 Scan/Tune FAQ Topic has Attachments
 by vis_croceus
23 45222 2010/8/11 17:40
by bogus
1989 L98 Engine rebuild - Part 2: prep and install   [1][2]
 by Matatk
66 37007 2/20 14:56
by bogus
Looking at new rims
 by CorvetteBob
10 175 1/31 14:37
by bogus
c4 stuff
 by pappyfreebird
5 111 1/28 1:47
by pappyfreebird
Buying a C4
 by garyla
7 193 1/27 23:02
by bogus
Heater Core Removal and Replacement - 1989
 by Matatk
12 9346 1/23 6:44
by Matatk
Torque Thrust Wheels for 1987 Coupe
 by Kckckc
2 147 1/7 21:23
by bogus
1995 rough idle at a stop
 by Fletcher
12 423 2017/11/21 2:39
by bogus
Replaced straight pipe exhaust to magnaflow c4 1988 now running rough
 by Barney
3 236 2017/11/13 19:53
by Barney
Early C4 ABS Parts Topic has Attachments
 by hcbph
15 1126 2017/11/7 11:15
by hcbph
[Wack j3studio Question #65] Cigarette Lighter Has Power, But Doesn't Hold-in/Pop
 by j3studio
7 236 2017/11/6 21:07
by bogus
AFR heads and headers?
 by CorvetteBob
12 1636 2017/10/23 2:44
by Matatk
Now that I have a radiator...
 by CorvetteBob
5 770 2017/10/22 14:45
by CorvetteBob
auxiliary fuse box c4 1991 Topic has Attachments
 by corvettec4eosg
5 173 2017/10/12 19:46
by bogus
[Wack j3studio Question #63] Why No Rubber Suspension Bushings? Topic has Attachments
 by j3studio
10 467 2017/10/9 16:16
by bogus
[Wack j3studio Question #64] Chances Of Successfully Replacing Rear Emblem
 by j3studio
4 139 2017/10/9 16:13
by bogus
[Tires] Good News For A Small Set Of Early C4 Owners
 by j3studio
21 4145 2017/9/5 19:47
by hcbph
Window in 87 won't move, stuck in up position Topic has Attachments
 by lunytnz
14 681 2017/8/31 21:00
by joeld
Starting on this winters list
 by hcbph
7 376 2017/8/23 10:01
by hcbph
August 12, 2017 Car Show
 by hcbph
6 589 2017/8/13 17:07
by hcbph
Passive Keyless Entry
 by mjbaker46
6 356 2017/7/28 16:23
by bogus
oxygen sensor
 by Pocono87
4 377 2017/7/27 13:43
by bogus
Needed Rear Passenger suspension knuckle
 by BrianCunningham
7 480 2017/7/21 19:38
by bogus
LIGHTS ON-LIGHTS OUT
 by GRIS
16 1101 2017/7/21 2:34
by Matatk
air-fuel ratio
 by Pocono87
5 363 2017/7/4 1:13
by Matatk
opti-spark sale
 by CorvetteBob
2 311 2017/6/25 22:26
by CorvetteBob
SOLVED! Running rich and hunting for idle
 by lunytnz
3 409 2017/6/20 15:01
by bogus
vats
 by KellyBigdaddy
16 1151 2017/6/16 18:56
by KellyBigdaddy
Opinions: Rough Idle, Code 43
 by Danspeed1
5 450 2017/6/4 19:59
by Matatk
Where is the fuel tank pressure control valve Topic has Attachments
 by lunytnz
7 629 2017/6/1 18:46
by bogus
Parts hunt and power steering woes
 by Frank
6 451 2017/5/15 15:54
by Matatk
Who likes engine porn?   [1][2]
 by 383tpimachine
90 29336 2017/4/18 21:57
by bogus
C4 (1989) Antenna Mast Replacement
 by Matatk
4 452 2017/4/13 2:29
by Matatk
Proper Trim Height Topic has Attachments
 by jimmers
9 428 2017/4/10 21:26
by hcbph
Milodon High-Flow Thermostat
 by joeld
6 393 2017/4/9 16:34
by Matatk
Planning next project Topic has Attachments
 by hcbph
30 4854 2017/4/2 17:56
by Matatk
Clearance of Exotic Muscle Headers Topic has Attachments
 by CorvetteBob
28 1992 2017/3/12 14:55
by CorvetteBob
Please help identify this brace Topic has Attachments
 by Barney
12 874 2017/2/13 18:33
by bogus
Back on Tuning, found another issue with o2 sensors
 by Danspeed1
10 916 2017/2/9 6:02
by Danspeed1
Banski MotorSports is having an inventory reduction sale. 20% off all products.
 by astock165
11 1730 2017/2/6 20:01
by bogus
Aftermarket gas pedal mount...
 by CentralCoaster
5 540 2017/1/31 21:50
by bogus
Replace Rear Axle Seal
 by jimmers
6 928 2017/1/22 14:08
by PeteK
Carrier bolt rear suspension 87 Topic has Attachments
 by istter1
11 952 2017/1/19 15:17
by bogus
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The topic has been Digested. = The topic has been Digested.
Topic has a Poll = Topic has a Poll
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