OEMTOOLS 19mm Impact Crank Bolt Socket for 1/2" Drive — Heavy-Duty 6-Point, Heat-Treated

The OEMTOOLS 25290 is a heavy-duty 19mm impact crank bolt socket built for 1/2" drive tools to remove stubborn crankshaft bolts reliably.

If you work on engines, a crank bolt that won't budge wastes time and risks damaging fasteners. This 19mm impact socket is engineered to pair with impact wrenches and breakers to deliver the extra torque and secure grip needed to remove tight crank bolts without rounding the bolt head.

How does this socket handle stuck or seized crank bolts?

The socket is made from heat-treated, impact-quality alloy steel so it resists deformation under high torque. Its 6-point geometry concentrates force on the flat faces of the bolt rather than the corners, reducing the chance of rounding and improving breakaway performance.

• Impact-rated alloy steel construction for durability under high torque
• 6-point design grips flats to prevent corner rounding
• Works with 1/2" drive impacts and breakers for added power

Will this fit the crank bolts in my shop and how easy is size identification?

This socket is a metric 19mm size, the most common crank bolt dimension on many engines. Sizes are clearly marked on the socket body so you can pick the correct tool quickly without wasting time searching through the toolbox.

• Precise 19mm metric fit for snug seating on bolt heads
• Clearly labeled size marking for fast selection
• Compatible with standard 1/2" drive impact tools and extensions

Can it withstand repeated impact use and shop conditions?

The OEMTOOLS 25290 is engineered for shop use with heat-treated materials and impact-grade manufacturing to stand up to repeated blows from impact wrenches. The finish and construction resist cracking and wear in heavy-duty environments.

• Heat-treated for strength and longevity
• Impact-rated to handle high-torque removal tasks
• Designed for frequent use on automotive jobs

How does the 6-point design improve removal and prevent damage?

By engaging the flat sides of a fastener, a 6-point socket transmits torque more evenly and reduces stress concentration on the corners. That makes it easier to loosen bolts that have been torqued tightly or exposed to corrosion without stripping them.

• Grips bolt flats to maximize torque transfer
• Minimizes slippage and corner damage under load
• Better for high-torque applications than shallow or damaged sockets

Who is this for: Mechanics, DIYers, and shop technicians who routinely remove crankshaft bolts will appreciate this socket. It’s especially useful when facing seized or heavily torqued fasteners and for anyone who needs an impact-rated 19mm solution for a 1/2" drive toolset.