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1973-75 Firebird Radiator Overflow Jar

491030 - 1973-75 Firebird Radiator Overflow Jar

Correct reproduction radiator overflow jar for 1973-75 Firebird models. Utilizing the correct blowform method, each jar is manufactured in correct clear plastic material and features molded in mounting stud with nut and ADD/FULL lines as original. For cap use 491032 (white lettering) or 494939 (blue lettering).

Note: This is 1975 1st design jar, for 1975 2nd design use part number 10006782.


  • 1973-74 V8 all
  • 1975 V8 1st design
Product #: 491030

In Stock Now!

MSRP: $54.99 ea
Classic: $49.99 ea



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