RC 15, RC 27, RC 33 Radiator caps
 

Three original radiator caps. RC 15 is perfect for restoration, $50.00 plus shipping. RC 27 is in usable condition, $15.00 plus shipping. I also have an original RC 33 in usable condition, $15.00 plus shipping and a new reproduction AC 307 13 LB., $40.00 plus shipping.

I will take the RC 33 if it has the wording "DO NOT OPEN..." vs "never open..."

Sorry, the cap reads " Never Open Hot ". It is a 15 LB. closed system cap and I believe it was used starting in 1973.

Thanks,
According to the NCRS the RC 33 which reads DO NOT OPEN is the correct ASSEMBLY LINE radiator cap. We have one CORRECT "DO NOT" cap in decent shape and numerous decent caps with "NEVER", which are service replacements for 1973 Model Year.

Here my original RC33 cap thats never been off the car on my 1974 z28. Its the NEVER OPEN HOT variety.

Heres the NOS over the counter one with crisp letters.

Rc 33
 

The RC 33 cap I have for sale came off a 1974 Z/28 that had 1,000 miles on the odometer. This cap is mint.

PM sent

Replied to PM.

RC 33 cap SOLD. RC 15 cap SALE PENDING. RC 27 and AC 307 #13 Still Available.