GXYWADY coolant overflow tank HD81-87 shown as a durable replacement for GM trucks
Cap included with GXYWADY HD81-87 coolant overflow tank for secure sealing
Front view of GXYWADY HD81-87 replacement tank with correct form factor
Close-up of cap on GXYWADY HD81-87 coolant overflow tank
Side view of GXYWADY coolant expansion tank for GM CK-series trucks
GM CK-series engine bay showing compatible GXYWADY HD81-87 tank
GXYWADY tank installed in a Suburban/Blazer fitment context
GXYWADY coolant overflow tank HD81-87 shown as a durable replacement for GM trucks
Cap included with GXYWADY HD81-87 coolant overflow tank for secure sealing
Front view of GXYWADY HD81-87 replacement tank with correct form factor
Close-up of cap on GXYWADY HD81-87 coolant overflow tank
Side view of GXYWADY coolant expansion tank for GM CK-series trucks
GM CK-series engine bay showing compatible GXYWADY HD81-87 tank
GXYWADY tank installed in a Suburban/Blazer fitment context

GXYWADY HD81-87 Coolant Overflow Expansion Tank with Cap for 1981-1987 GM Trucks

Overview The GXYWADY HD81-87 coolant overflow expansion tank with cap is a durable replacement designed for classic...
Vendor: GXYWADY
Availability: In stock
£76.52
£76.52
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GXYWADY coolant overflow tank HD81-87 shown as a durable replacement for GM trucks

GXYWADY HD81-87 Coolant Overflow Expansion Tank with Cap for 1981-1987 GM Trucks

£76.52
GXYWADY coolant overflow tank HD81-87 shown as a durable replacement for GM trucks
Cap included with GXYWADY HD81-87 coolant overflow tank for secure sealing
Front view of GXYWADY HD81-87 replacement tank with correct form factor
Close-up of cap on GXYWADY HD81-87 coolant overflow tank
Side view of GXYWADY coolant expansion tank for GM CK-series trucks
GM CK-series engine bay showing compatible GXYWADY HD81-87 tank
GXYWADY tank installed in a Suburban/Blazer fitment context

GXYWADY HD81-87 Coolant Overflow Expansion Tank with Cap for 1981-1987 GM Trucks

£76.52
Description
Description
x

Overview

The GXYWADY HD81-87 coolant overflow expansion tank with cap is a durable replacement designed for classic General Motors trucks. Crafted from stable plastic materials, it is built to withstand high heat and engine vibration, helping you maintain a balanced cooling system under everyday driving and tougher conditions.

Why choose this replacement

  • Reliable replacement for GM vehicles from 1981–1987 CK series, plus 1988–1991 RV pickups, Blazer, Suburban, and full-size trucks.
  • Cap included for a secure seal and easier checking of coolant levels.
  • Engineered to endure heat and vibration, reducing stress on the cooling circuit during operation.
  • Designed to work with the HD81-87 model form, ensuring a more compatible fit when swapping in a worn tank.

Potential benefits in real-world use

  • May help manage coolant levels more consistently, supporting steady engine temperatures during drives.
  • Could contribute to reduced fuel dilution and smoother cooling system operation by maintaining proper coolant circulation.
  • Durable construction aims to resist cracking or deformation from heat exposure or road vibrations.

Fitment and compatibility

This tank is intended as a replacement for GM vehicles listed above, with a form that aligns to the HD81-87 specification. Please read the appropriate model form carefully before purchasing to confirm exact fitment for your vehicle.

Specifications and care

  • Part number: HD81-87
  • Material: stable plastic designed to withstand heat and vibration
  • Includes cap for secure sealing
  • Simple replacement option that aligns with classic GM layouts

To maintain performance, check coolant levels regularly and replace per your vehicle’s maintenance schedule. Note that while replacements can support proper cooling system function, results can vary based on overall vehicle condition and operating environment.

FAQ

Q: Which vehicles and models is this HD81-87 tank compatible with?

A: Compatible with GM 1981–1987 CK series, plus 1988–1991 RV pickups, Blazer, Suburban, and full-size trucks. Verify fitment with the model form before purchase.

Q: What benefits might using this replacement offer?

A: Durable plastic resists heat and vibration, with potential for steadier coolant management and improved cooling system reliability. This is a replacement part and may vary by vehicle condition.

Shipping & Return
Shipping & Return
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Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Shipping

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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