Milwaukee Tool 48-22-9551 Spark Plug Socket 5/8 in 3/8 Dr

Product Description

The MILWAUKEE TOOL 48-22-9551 is a 5/8 inch spark plug socket designed for removing and installing spark plugs in automotive and small-engine applications. Built from steel with a stainless steel finish, it features a 3/8 inch hex drive and a 6-point contact design that grips spark plug hex flats securely to reduce rounding. At 2.68 inches overall length, this is a standard-length socket suited for most accessible spark plug locations. It weighs 0.215 pounds and is sold individually. Licensed technicians and experienced DIYers working on engine maintenance will find this a straightforward, durable addition to a socket set.

This socket is intended for spark plug service on gasoline engines where a 5/8 inch plug hex is the correct fitment — common on many domestic and import passenger vehicles and small equipment. The 3/8 inch drive size pairs with standard 3/8 inch drive ratchets, extensions, and torque wrenches. The standard length is appropriate for plug locations with reasonable clearance above the plug. Where deep plug wells are present, an extension or a deep-well socket would be required instead.

Key Features

• 5/8 inch socket size for common spark plug hex dimensions
• 3/8 inch hex drive compatible with standard 3/8 inch drive tools
• 6-point contact geometry reduces rounding on plug hex flats
• Steel construction with stainless steel finish for corrosion resistance
• Standard length at 2.68 inches for accessible plug locations
• Lifetime warranty from MILWAUKEE TOOL

Compatibility

Designed as an OEM-style spark plug socket for use with 3/8 inch drive ratchets and extensions on gasoline engines requiring a 5/8 inch spark plug socket.

Installation Notes

Spark plug service should be performed by a qualified technician following the engine manufacturer's service procedures. Disconnect the ignition system and allow the engine to cool fully before removing spark plugs. Use a calibrated torque wrench when reinstalling plugs to avoid overtightening or undertightening — consult the engine manufacturer's specification for the correct torque value. This socket is not insulated and is not rated for live electrical work.