null
Toggle menu

 

 

 

Welcome to Highway Stars

 

Do you want the best quality parts?
Do you want to receive your order complete?
Do you want great customer service?
Do you want to deal with a company who actually CARES?

 

IF YOU SAY YES . . . 
You have come to the right place!

 

READ NOTICE BELOW in RED

We'll be back Monday-Nov 10, 2025 

 

  • Highway Stars Oil cooler adapter O ring replaces GM part #25530999 for 1986 1987 Buick Grand National GNX and turbo regal
  • Highway Stars Oil cooler adapter O ring replaces GM part #25530999 for 1986 1987 Buick Grand National GNX and turbo regal
  • Highway Stars Oil cooler adapter O ring replaces GM part #25530999 for 1986 1987 Buick Grand National GNX and turbo regal

    • Gasket - Oil Cooler Bypass O-ring - replaces GM# 25530999

    $3.95
    (No reviews yet) Write a Review
    SKU:
    25530999 R
    Condition:
    New
    Availability:
    Stocked in Gurnee IL-Highway Stars

    Product Description

    Brand-new OEM reproduction Oil Cooler Bypass O-ring gasket.

    This is an exact replacement for GM# 25530999.

    Product Videos

    Custom Field

    Product Reviews

    Write a Review