OER 1973-81 Firebird Radiator Overflow Jar Cap Blue Lettering

Part Number: 494939-OER

OER 1973-81 Firebird Radiator Overflow Jar Cap Blue Lettering

Part Number: 494939-OER

Original price was: $29.84.Current price is: $25.95.

In Stock

( Inventory updated: 06/06/2026 )

Estimated ship date: 2-3 business days

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1973-81 Firebird Radiator Overflow Jar Cap – Blue Lettering

Revive the authenticity of your classic Pontiac Firebird with this carefully crafted Radiator Overflow Jar Cap featuring striking blue lettering. Designed to meet the original specifications for 1973-81 Firebird models, this replacement part not only enhances the visual appeal of your engine bay but also ensures optimal cooling system performance.

Key Features and Benefits

  • Exact reproduction of the original radiator overflow jar cap, ensuring a perfect fit and finish.
  • Authentic black cap adorned with embossed blue lettering stating “Radiator Cooling Only” for classic styling.
  • Includes a 12″ hose that can be cut to your desired length, allowing for versatile installation across various models.
  • Enhances the reliability of your cooling system by effectively managing overflow during operation.

Technical Specifications

  • Part Number: 494939
  • Brand: OER

Fitment Information

  • 1973 – 1981 Pontiac Firebird Base
  • 1973 – 1981 Pontiac Firebird Esprit
  • 1973 – 1981 Pontiac Firebird Formula
  • 1973 – 1981 Pontiac Firebird Trans Am

Tube Length:

  • 1973-1975 Pontiac Firebird (11-3/4″ tube)
  • 1975-1979 Pontiac Firebird (9-3/4″ tube)
  • 1980-1981 Pontiac Firebird (10″ tube)

Recommendation: Use RH65101 radiator to overflow tank hose for an enhanced connection.

Upgrade your Pontiac Firebird’s cooling system today with the 1973-81 Radiator Overflow Jar Cap and experience the perfect blend of style and function that keeps your classic car running smoothly.

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OER

Original Equipment Reproduction - OER - is the leading manufacturer and distributor of quality classic automotive restoration parts and accessories. OER products are meticulously manufactured to replicate the OEM appearance, quality and fit that meets or exceeds the original factory specifications.

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