Brakes Master Cylinders-Boosters and Components

Dorman

NEW MASTER CYLINDER

$167.70

SKU: D00I M39808

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

Easy — 1–2 hours

Description

The Dorman M39808 is a brake master cylinder designed for Jeep CJ5 and CJ7 models. It features a cast iron construction for durability and a 1.063-inch bore diameter for precise hydraulic pressure.

This master cylinder includes a reservoir for consistent brake fluid supply and has two outlet ports: a rearward outlet sized at 1/2-20 and a secondary outlet with a 9/16-18 thread diameter. It is an OE direct replacement, meaning it offers a bolt-on fit with no modifications needed.

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 M39808

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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