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Dorman Coolant Reservoir Bottle

SKU. 1GBKU    Part No. 603-102  

Dorman - Manufacturer Brand Logo


Available to order
Usually ships in 1-2 days

All parts sold on this site are Competition Parts intended for Racing and Off-Road use only.
⚠ WARNING: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to
  • Overview

    Quick Info

    • Direct Replacement

    • Complete Assembly

    • Color: Clear

    Product Details

    This replacement engine coolant reservoir is manufactured from premium plastic to withstand the stresses of underhood heat and engine vibration. It is thoroughly tested to ensure optimum fit and performance on specific vehicle applications.

    • Direct replacement - this engine coolant reservoir fits and functions like original equipment for a trouble-free installation
    • Complete assembly - includes reservoir and reservoir cap
    • Excellent value - OE quality at a lower price
    • Quality materials - built to withstand excessive heat and vibration

    Application Summary: Cadillac 2006-02, Chevrolet 2007-99, GMC 2007-99, Hummer 2009-03

    Product Specifications

    Cap Included:Yes

    Cap Maximum Pressure Rating:15 PSI

    Cap Type:Spring Loaded Twist

    Color:ClearHeight:186 mm

    Length:235 mm

    Material:PlasticMount Hole Quantity:1

    Mounting Brackets Included:Yes

    Mounting Hardware Included:No

    Package Contents:1 Coolant Reservoir, 1 Cap

    Package Quantity:1

    Packaging Type:Box


  • Specifications +
    Brand Dorman
    Part Number 603-102
    Category Vehicle Parts ▸
    Brake System ▸
    Brake Reservoirs
    Item Code 1GBKU
    Length 13.1 in.
    Width 12.5 in.
    Height 10.0 in.
    Weight 4.00 lb.
    Created Thursday, December 13, 2018
    Last Updated Wednesday, February 6, 2019
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