Drivetrain› 4x4 Driveline Components

Merchant Automotive

A23 Seal T-Case Speed Sensor 246 261HD 263HD 261XHD 263XHD

$17.78

SKU: M01D 10238

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

Easy — 1–2 hours

Description

The Merchant Automotive 10238 is a transfer case speed sensor O-ring seal. It is located on the tailshaft around the 11 o'clock position. This O-ring is a direct replacement part for Duramax models from 1998-2007. Note that NP246 transfer cases utilize three speed sensors for automatic four-wheel drive engagement, requiring three O-ring seals if all sensors are serviced.

Fitment

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Specifications

BrandMerchant Automotive
Part NumberM01D 10238

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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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