Tools› Hand and Other Tools

DieHard

3-Inch 3/8" Drive Extension Bar

$8.99

SKU: DHP55173

In Stock
In Stock
Ships by Sep 9
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Beginner — under 30 min

Overview

The DieHard 3/8" drive extension bar is a 3-inch tool designed for reaching tight spaces. It is crafted from heat-treated chrome vanadium steel for durability and features a textured shaft for easier control. This extension bar is a regular-use tool, not intended for impact applications.
Show original supplier description
The DieHard 3/8" drive extension bar is a versatile tool engineered to provide access to hard-to-reach fasteners and bolts. Its 3-inch length is ideal for navigating confined engine bays or other tight automotive spaces, making tasks like window regulator replacement more manageable. Constructed from heat-treated chrome vanadium steel, this extension bar offers enhanced durability and resistance to wear, ensuring a long service life. The textured shaft provides a secure grip, improving control and maneuverability during use, even with greasy hands. DieHard tools are known for their reliability and durability, exceeding ANSI/ASME standards. This particular extension bar comes with a limited lifetime warranty, reflecting the brand's confidence in its quality and performance. It is a valuable addition to any mechanic's or DIY enthusiast's toolbox, enabling them to tackle a wider range of automotive repairs.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandDieHard
Part NumberDHP55173
CategoryTools

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Returns & Fitment

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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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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