Engines and Components› Oiling Systems

Dorman

FLUID RESERVOIR

$135.96

SKU: D00I 603-336

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Beginner — under 30 min

Description

The Dorman 603-336 is a front engine coolant reservoir designed for optimal engine temperature regulation. It offers OE-level reliability and a precise fit as a replacement for the original part. Manufactured from plastic, this pressurized reservoir includes a cap.

This Dorman coolant reservoir is compatible with various BMW models, including the Z3 and X5 series.

Fitment

Fitment Guaranteed

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on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandDorman
Part NumberD00I 603-336

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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