
Motortech Spark Plug Leads & Extensions. Patented PolyMot Structure: Integrated no-disassembly design eliminates split-type leakage faults and improves installation efficiency. High-Voltage Insulation Stability: Ceramic rods prevent condensation and gas accumulation, solving creepage issues in high-impurity gas conditions. Explosion-Proof Certification: Meets Class I Div.2 standards, suitable for underground coalbed methane and biogas generator sets. Universal Direct Replacement: Directly replaces ALTRONIC, Waukesha, and Caterpillar assemblies without hardware modification. Customizable Length: Cable length and extension rod length can be customized to fit specific deep-hole cylinder head requirements. Durable Silicone Construction: Thickened blue silicone resists oil, aging, and gas corrosion with multi-layer shielding structure.