PRODUCTS
3305M/A Spark Plug Socket | 3⁄8 ” Drive | 6-Point Rubber Insert
3305M-A Series:⅜” Drive 6-Point Spark Plug Socket (Rubber Insert Type)
- Spark Plug Socket
- Douille pour bougie d’allumage
- Nasadka do świec zapłonowych
- Zündkerzennuss
- Vaso para bujía
- ソكيت شمعات الإشعال
- 火星塞專用套筒
- Soquete para vela de ignição
- Gyújtógyertyakulcs
- Cheie tubulară pentru bujii
- Bussola per candele
- Bougiesleutel
- Свечной ключ (торцевая головка)
- Buji lokması
- Built for Precision: Essential Accessories for Every Technician’s Work
3305M/A is a specialized 6-Point Spark Plug Socket engineered for automotive MRO (Maintenance, Repair, and Operations). Designed for a 3/8″ Square Drive, this tool is the industry standard for traditional spark plug service. It features an integrated Rubber Insert mechanism, providing a secure friction-grip that protects the delicate ceramic insulator during extraction and ensures the plug remains axial during installation to prevent cross-threading.
| 3305M | 3305A | D mm | L mm |  g |  pcs |
|---|---|---|---|---|---|
| 16 | ⅝ | 22 | 65 | 85 | 10 |
| 18 | 24 | 65 | 110 | 10 | |
| 20.8 | ¹³ᐟ₁₆ | 28 | 65 | 138 | 10 |
Feature
Technical Architecture & Mechanical Logic
6-Point (Hex) Geometry: This spark plug socket features a precision-broached 6-point internal profile. This mechanical logic maximizes surface contact with the spark plug’s hex flats, allowing for the application of high breakaway torque without the risk of “rounding” the fastener.
Protective Rubber Insert: The interior of the socket is fitted with a heavy-duty rubber bung. This serves two critical functions:
Retention: It grips the spark plug terminal, allowing the plug to be lifted out of deep cylinder head wells.
Protection: It cushions the ceramic insulator against lateral forces, preventing hairline cracks that lead to engine misfires.
Premium Chrome Vanadium (Cr-V) Steel: Forged from high-density, heat-treated Chrome Vanadium. This metallurgy provides the structural rigidity required for high-torque tasks while maintaining a thin-wall profile for access in cramped engine bays.
Metric Range Coverage: As per the technical data, the 3305M-A is available in: 14, 16, 18, 19, and 20.8mm (13/16″) sizes.
63mm Standard Length: The 63mm total length is optimized for full engagement of the spark plug hex while allowing enough clearance for 3/8″ extensions and torque wrenches.
B2B Procurement & Workshop ROI
Ceramic Integrity Assurance: The rubber insert system is a cost-effective solution for preventing expensive damage to new spark plugs during installation.
Universal 3/8″ Compatibility: Precision-machined to international standards, ensuring a zero-tolerance fit with all 3/8″ ratchets and extensions.
Industrial Mirror Finish: Features a high-polish chrome finish for maximum resistance to oxidation, grease, and carbon buildup, making it easy to clean in professional environments.
