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OER 1973-74 Nova, Apollo, Omega, Radiator Overflow Jar 344387

OER 1973-74 Nova, Apollo, Omega, Radiator Overflow Jar 344387
OER 1973-74 Nova, Apollo, Omega, Radiator Overflow Jar 344387OER 1973-74 Nova, Apollo, Omega, Radiator Overflow Jar 344387OER 1973-74 Nova, Apollo, Omega, Radiator Overflow Jar 344387OER 1973-74 Nova, Apollo, Omega, Radiator Overflow Jar 344387OER 1973-74 Nova, Apollo, Omega, Radiator Overflow Jar 344387OER 1973-74 Nova, Apollo, Omega, Radiator Overflow Jar 344387OER 1973-74 Nova, Apollo, Omega, Radiator Overflow Jar 344387OER 1973-74 Nova, Apollo, Omega, Radiator Overflow Jar 344387OER 1973-74 Nova, Apollo, Omega, Radiator Overflow Jar 344387
$83.99 ea
NEWARRIVING SOONEstimated Ship Date 12/30/2025 (If Ordered Today)10 Available from OER as of 12/05/2025
Model: 3085278
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
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Factory-correct reproduction of the GM radiator overflow jar for 1973-74 Nova models. Precision-molded from high-grade plastic, this reservoir features authentic FULL HOT and FULL COLD markings, original-style GM part number, and accurately formed mounting tabs for a true OEM fit. Includes the lower mounting clip for secure installation, making it an ideal choice for restoring original cooling system appearance and performance.

Features and Benefits:
  • Authentic reproduction of the 1973-74 Nova, Apollo, Omega radiator overflow jar.
  • Constructed from high-grade, durable plastic for longevity.
  • Features correct FULL HOT and FULL COLD lines for accurate coolant level reference.
  • Includes original-style GM part number and mounting tabs.
  • Comes with lower mounting clip for proper fitment.
  • Restores factory appearance and function in the engine bay.
Technical Information:
  • Fits 1973-74 Chevrolet Nova models.
  • Direct OEM-style replacement - no modifications required.
  • Precision injection-molded to match original dimensions.
  • Overflow jar cap available separately (#340194).
Buick Applications
  • 1973 - 1974 Buick Apollo
Chevrolet Applications
  • 1973 - 1974 Chevrolet Nova Base
  • 1973 - 1974 Chevrolet Nova Custom
Oldsmobile Applications
  • 1973 - 1974 Oldsmobile Omega
About OER

OER® was established in the early 1980's to manufacture original equipment reproductions where every part is meticulously reproduced to exact factory specifications. All OER® parts are reverse engineered or manufactured using original blueprints when available to ensure the closest possible reproduction available on the market. When available, original factory tooling is utilized to insure complete originality. Our mission is to supply the highest quality parts available for the enthusiast and serious restorer. Whether you're a serious restorer, or just someone who wants a replacement part for your classic vehicle, OER® is the source for the finest quality parts on the market. Today, OER® is the most recognized brand in automotive restoration parts. Choose OER® for all your restoration needs.

Many OER® products are officially licensed by General Motors and the Chrysler Group ensuring the quality and authenticity of these products. The GM Restoration Parts logo and the MOPAR Authentic Restoration Product logo are the true signs of quality. OER® is licensed by GM and the Chrysler Group as an official restoration parts manufacturer.

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
Buick Apollo 1973 - 1974
Chevrolet Nova 1973 - 1974
Oldsmobile Omega 1973 - 1974

Specifications:

Height 17 in
Length 8 in
Weight 3 lbs
Width 8 in

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