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1975-79 Pontiac Firebird, Radiator Overflow Jar

1975-79 Pontiac Firebird, Radiator Overflow Jar
$79.99 ea
NEWARRIVING SOONEstimated Ship Date 05/14/2026 (If Ordered Today)1500 Available from our supplier as of 04/28/2026
Model: 3122451
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
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Correct reproduction radiator overflow jar for use on various 1975-79 Firebird models. Manufactured using the correct blowform method, each jar is produced in clear plastic material and features the GM part number, ADD and FULL lines, and molded in mounting studs just like the original. Includes mounting nuts, clips, and screws. Compatible caps include 491032 with white lettering or 494939 with blue lettering. For the mounting bracket, use part number 500528. This jar is designed for the 1975 second design overflow jar. For the 1975 first design, use part number 491030.

Features and Benefits:
  • Correct reproduction overflow jar for 1975-79 Firebird applications
  • Manufactured using the correct blowform method for authentic factory appearance
  • Clear plastic construction matches original style and visibility
  • Features GM part number, ADD and FULL lines, and molded in mounting studs
  • Includes mounting hardware for installation convenience
  • Construction: Blowform clear plastic
  • Features: GM part number, ADD and FULL lines, molded in mounting studs
  • Included: Mounting nuts, clips, and screws
Applications
  • 1975-1975 Pontiac Firebird (V8 - 2nd design)
  • 1976-1976 Pontiac Firebird (V8)
  • 1977-1977 Pontiac Firebird (V8 - except 305U)
  • 1978-1979 Pontiac Firebird (V8 - 400, 403)
  • 1979-1979 Pontiac Firebird V8 - 301
Pontiac Applications
  • 1975 - 1979 Pontiac Firebird Base
  • 1975 - 1979 Pontiac Firebird Esprit
  • 1975 - 1979 Pontiac Firebird Formula
  • 1975 - 1979 Pontiac Firebird Trans Am

Vehicle Fitment:

The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
Make Model Years
Pontiac Firebird 1975 - 1979

Specifications:

Height 11 in
Length 7 in
Weight 5 lbs
Width 10 in

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1975-79 Pontiac Firebird, Radiator Overflow Jar:

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