Autolite 4194 Copper Core Non-Resistor Spark Plug

The Autolite 4194 is a copper core non-resistor spark plug engineered for reliable ignition performance in automotive, motorcycle, ATV, and small engine applications. This traditional copper spark plug delivers quick starts, efficient fuel combustion, and smooth acceleration across a wide range of operating conditions.

Key Features:

• Copper core center electrode provides superior thermal control and improved resistance to fouling
• High nickel alloy center and ground electrodes offer extended service life and resist electrical and chemical wear
• Non-resistor design allows full spark intensity for direct, powerful ignition
• High alumina multi-rib ceramic insulator delivers excellent thermal conductivity and superior insulation strength
• Nickel-plated steel shell with precision-rolled threads provides corrosion resistance and durability
• Copper-glass seal bonds the insulator and terminal post together for a 100% leak-proof, gas-tight seal
• One-piece terminal post with removable nut adds strength and versatility

Specifications:

• Thread Size: 10mm x 1.0mm pitch
• Reach: 12.7mm (1/2 inch)
• Hex Size: 5/8 inch (16mm)
• Gap: 0.024 inch (0.6mm)
• Seat Type: Gasket (flat seat)
• Electrode Type: Standard nickel, non-projected tip
• Heat Range: 1
• Resistor: No
• Torque Specs: 7-11 lb-ft (cast iron or aluminum heads)

The Autolite 4194 replaces Champion Z9Y and RZ7C, NGK CMR6A and CMR5H, and various OEM part numbers for Honda, Kawasaki, Yamaha, and Polaris equipment. Backed by Autolite's 2-year limited warranty and decades of spark plug engineering expertise since 1935.