Drivetrain› Differentials and Rear-End Components

Moser Engineering

Ford 9in 40 Spline Steel Spool.

$256.26

SKU: M05W 5S9F40

In Stock
In Stock
Ships by Jun 9
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Moser Engineering 5S9F40 is a 9" Ford 40 spline steel spool designed for race applications. This performance spool enhances vehicle performance by saving weight and increasing the life of the rear end. It reduces deflection in the case and eliminates the possibility of side gear failure.

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

BrandMoser Engineering
Part NumberM05W 5S9F40

Videos

Ordering Moser Axles

Ordering Moser Axles
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Important Steps In Assembling A Moser Ford 9 Inch Differential
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Moser Minute --What is Axle Spline?
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Ford 8.8 Rear End, 35 Spline Axle Warranty, Moser Engineering
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WHAT'S THE DIFFERENCE BETWEEN 9-INCH HOUSING TYPES? | EXPLAINED

WHAT'S THE DIFFERENCE BETWEEN 9-INCH HOUSING TYPES? | EXPLAINED

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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