OER® 15588032 - Engine Coolant Overflow Jar Cap

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Product Details

Original Equipment Reproduction

Engine Coolant Overflow Jar Cap by OER®. Keep your overflow bottle from leaking with this all new reproduction overflow bottle cap. This molded cap is designed with the recovery hose fitting in the cap. Includes all correct lettering and fonts for an authentic appearance. Fits most Chevrolet and GMC model trucks from 1974-84. Location: 1974-84 GM Truck Overflow Bottle Cap. If you’re looking to ensure reliable performance of your vehicle’s cooling system, this first-rate OER product is right up your alley. It is manufactured from top-grade materials using modern equipment to withstand wear and tear and serve you for years. Designed to be an authentic reproduction of the original, this product delivers excellent OE fit and function at a price that won’t drain your wallet.


  • Designed to help prevent your engine from overheating
  • Made from premium materials for exceptional reliability
  • Guaranteed to provide OEM function
  • Designed to stringent OEM standards
  • Engineered to offer dependable performance for years ahead

While you enjoy fresh air and the wind in your face when driving through the off-road jungles or hitting the highway, your engine can get pretty hot when it runs. Since this heat can build up causing damages to your engine’s vital parts, it needs the help of the cooling system to dissipate that heat and keep it running healthy. This system consists of a number of parts that work together to pump cool blood to your engine’s veins ensuring its proper performance. If you’ve noticed that your engine is running too hot or too cold, there are chances that one of the components of the system has failed to operate and should be immediately replaced.

Don’t put your engine’s well-being at risk, replace worn out or defective cooling components with prime OER products stocked on our virtual shelves. Manufactured according to strict OE specifications, they fit and function just like the original, but cost less than at the dealer. OER utilizes only premium materials and the latest equipment to manufacture cooling parts that are proven to withstand the tough conditions they are often put through. Boasting excellent wear and tear resistance, they deliver dependable service for as long as possible.

Original Equipment Reproduction® is a top manufacturer of classic automotive restoration parts featuring an authentic appearance and complying to strict standards that meet or exceed OE specifications. OER offers a variety of fuel and exhaust, steering and suspension, electrical and wiring products, etc. The company provides OER Authorized products that are tested in the same way as OER products to get the 'OER Authorized' stamp of approval. Many OER products are officially licensed by Chrysler Group and General Motors.

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Warranty Information

One-Year Warranty

Many months and sometimes years are spent developing OER products to ensure every aspect of the part is correct. OER dedicated to offering the highest quality products on the market, along with a recognized brand name to enhance your company’s image. All OER® products are backed by a full 1-year manufacturer's limited warranty against defects and workmanship from the date of purchase. OER® items are guaranteed to fit and function correctly.

Magnuson-Moss Warranty Act:
Legally, a vehicle manufacturer cannot void the warranty on a vehicle due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure in the vehicle (per the Magnuson Moss Warranty Act (15 U.S.C. 2302(C)) Learn More

Vehicle Fitment

Chevy Blazer
1984 Chevy Blazer
1983 Chevy Blazer
1982 Chevy Blazer
1981 Chevy Blazer
1980 Chevy Blazer
1979 Chevy Blazer
1978 Chevy Blazer
1977 Chevy Blazer
1976 Chevy Blazer
1975 Chevy Blazer
1974 Chevy Blazer
Chevy CK Pickup
1984 Chevy CK Pickup
1983 Chevy CK Pickup
1982 Chevy CK Pickup
1981 Chevy CK Pickup
1980 Chevy CK Pickup
1979 Chevy CK Pickup
1978 Chevy CK Pickup
1977 Chevy CK Pickup
1976 Chevy CK Pickup
1975 Chevy CK Pickup
1974 Chevy CK Pickup
Chevy LUV
1982 Chevy LUV
1981 Chevy LUV
1980 Chevy LUV
1979 Chevy LUV
1978 Chevy LUV
1977 Chevy LUV
1976 Chevy LUV
1975 Chevy LUV
1974 Chevy LUV
Chevy S-10 Blazer
1984 Chevy S-10 Blazer
1983 Chevy S-10 Blazer
Chevy S-10 Pickup
1984 Chevy S-10 Pickup
1983 Chevy S-10 Pickup
1982 Chevy S-10 Pickup
Chevy Suburban
1984 Chevy Suburban
1983 Chevy Suburban
1982 Chevy Suburban
1981 Chevy Suburban
1980 Chevy Suburban
1979 Chevy Suburban
1978 Chevy Suburban
1977 Chevy Suburban
1976 Chevy Suburban
1975 Chevy Suburban
1974 Chevy Suburban
GMC CK Pickup
1984 GMC CK Pickup
1983 GMC CK Pickup
1982 GMC CK Pickup
1981 GMC CK Pickup
1980 GMC CK Pickup
1979 GMC CK Pickup
1978 GMC CK Pickup
1977 GMC CK Pickup
1976 GMC CK Pickup
1975 GMC CK Pickup
1974 GMC CK Pickup
GMC Caballero
1984 GMC Caballero
1983 GMC Caballero
1982 GMC Caballero
1981 GMC Caballero
1980 GMC Caballero
1979 GMC Caballero
1978 GMC Caballero
GMC Jimmy
1984 GMC Jimmy / S15 Jimmy
1983 GMC Jimmy / S15 Jimmy
1982 GMC Jimmy
1981 GMC Jimmy
1980 GMC Jimmy
1979 GMC Jimmy
1978 GMC Jimmy
1977 GMC Jimmy
1976 GMC Jimmy
1975 GMC Jimmy
1974 GMC Jimmy
GMC Sonoma
1984 GMC Sonoma
1983 GMC Sonoma
1982 GMC Sonoma
GMC Sprint
1977 GMC Sprint
1976 GMC Sprint
1975 GMC Sprint
1974 GMC Sprint
GMC Suburban
1984 GMC Suburban
1983 GMC Suburban
1982 GMC Suburban
1981 GMC Suburban
1980 GMC Suburban
1979 GMC Suburban
1978 GMC Suburban
1977 GMC Suburban
1976 GMC Suburban
1975 GMC Suburban
1974 GMC Suburban
GMC Transmode
1978 GMC Transmode
1977 GMC Transmode
1976 GMC Transmode
1975 GMC Transmode
1974 GMC Transmode

Product Reviews


Every Customer can leave a review about our service and the product that was purchased. In order to leave your review for your new product, please follow the link in the email you receive after completing your purchase. You can rate appearance, ease of installation, price/value and product quality.

OER® - Engine Coolant Overflow Jar Cap
OER® 15588032 - Engine Coolant Overflow Jar Cap
Average Rating: 5 of 5
5 of 5
Kd Ambrose
OER® - Engine Coolant Overflow Jar Cap
My husband received this and installed it within seconds. He was very pleased with the packaging and ease of installation.
KPosted by (Golden, CO) /
1974 Chevy Blazer
Was this review helpful for you? Yes

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