3355-Spring Spark Plug Socket (6 Point)- 3⁄8″ Drive

3355 Series is built for mission-critical engine service:

• Metal Spring Clip Technology: The defining technical feature. Instead of a rubber grommet that can wear out or lose its grip when oily, the 3355 uses an integrated metal spring. This ensures a consistent, high-tension hold on the plug’s ceramic insulator, preventing the plug from falling back into the cylinder or cracking during removal.
• Thin-Wall 6-Point Profile: The socket is engineered with a slim outer diameter to fit the narrow spark plug tubes found in modern multi-valve cylinder heads. The 6-point (Hex) internal geometry ensures a flush fit on the plug’s hex flats, distributing torque evenly to prevent “rounding” under high-heat seizure.
• Forged Chrome Vanadium (Cr-V) Metallurgy: Forged and heat-treated to industrial standards. This provides the structural rigidity needed for high-breakout torque while maintaining a slim profile for maximum clearance.
• Deep-Reach Architecture: Calibrated for total plug coverage. The internal depth is matched to standard spark plug dimensions (16mm and 21mm), ensuring the socket never bottoms out on the terminal nut before the hex is fully engaged.
• Mirror Polished Finish: The high-luster chrome plating provides resistance to corrosion and allows for removal of carbon and oil residues.