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25% Off Online Orders of Select Hard Parts. Enter Promo Code MMJ30 in Cart.

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25% Off Select Parts and Accessories
Receive 25% Off Your Online or In-Store Purchase. Use promotional code MMJ25 at checkout to receive discount. Not valid in combination with any other discounts, promotions or items already on sale. Not valid on gift cards, special orders, installed merchandise, commercial or fleet purchases. Those products that are included will be displayed in product search results and product detail pages. INCLUDES the following categories: Starters, Alternators, Fuel Pumps, Radiators, Shocks & Struts, Chassis, CV Axles, Batteries, Ignition, Window Motors, Wipers, Appearance Chemicals, Car Wash Accessories, Floor Mats, Lift Equipment, Hand Tools, Headlamps and Bulbs. Excludes the following brands: Powerstop, Razor, Traxxas, Superchips, Hypertech, Edge, Bully Dog, Diablo, Edelbrock, Holley, NOS, Proform, Specialty Auto, Autometer, Accel, K&N, Kenwood, Pioneer, Sony, Thule, Thule Karrite, JVC, Flowmaster, Hurst, B&M, MSD, Moog, Wagner and BBK Performance. Valid online until 2:59 am EST on 5/1/17.

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  • Part #: GH8551|
  • SKU: 556460

Available today

Pay in Store Available

    • Drive Size: 3/8 in. Drive
    • Socket Size: 5/8 in.
PayPal available for online purchases. Major credit cards accepted online and in store. Pay online, in-store or take advantage of our Pep Boys credit card. Learn more and see additional details in cart.

Gearhead 3/8" Drive, 5/8" Spark Plug Socket

GearHead tools are an investment in quality. They are made using the highest quality materials and manufacturing standards. GearHead tools are built to last forever and offer a lifetime guarantee. All GearHead tools meet or exceed ANSI Standards.
  • Drive Size: 3/8 in. Drive
  • Socket Size: 5/8 in.
  • Deep Wall Spark Plug Socket
  • 6 point
  • Constructed of Durable, Heat Treated, Chrome Vanadium Steel
  • Chrome Plating Resists Rust And Corrosion
  • Lifetime Guarantee
  • Meet ANSI Spec


Gearhead 3/8" Drive, 5/8" Spark Plug Socket is rated 4.5 out of 5 by 4.
Rated 5 out of 5 by from Product works great This product is just what i needed I couldn't finish this job without it.
Date published: 2016-09-04
Rated 5 out of 5 by from Lot more than a couple of tools I just completed replacing four brake rotors, ceramic brake pads, spark plugs, and wires. Also installed rear shocks and front strut kits. The kit made a job that an 83 year old could consider. It was so easy and worked so well that I replaced the units by my self with my wife starting the nuts on the new struts will I held them in place. I then had Pep Boys do a front end alignment. I have just driven over 1000 miles to Florida and had no problems. I have found that all of Pep Boys parts to have held up well and have been using them for years.
Date published: 2015-11-01
Rated 3 out of 5 by from Careful when changing recessed plugs I was changing the recessed plugs on a Nissan 3.5 L V6. The plugs are recessed deep in the heads, so an extension needs to be used to reach the plugs. The socket worked fine when removing plugs and the rubber insert firmly grips the plugs so they were pulled out of the head without any issue. This firm grip caused a small problem when installing the plugs. The plugs are held firmly in place so getting the plugs started without cross threading was easy. But after the plugs are seated firmly when you try to remove the socket by pulling on the extension, the socket stays on the plug and the extension comes free. I was unable to reach in with needle nose pliers so I ended up removing the plug, applying dielectric grease to the porcelain insulator of the plug and not fully inserting the plug into the socket. This workaround allowed the plug to separate from the socket leaving the socket attached to the extension.
Date published: 2015-10-02
Rated 5 out of 5 by from Great socket! I need just one socket to pull my spark plugs out, Not a whole set. So I went to Pepboys and got just one. It worked great and I did the job right.
Date published: 2015-09-02
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