Spark Plug for 1932-1936 Harley-Davidson RL & More - Champion 561

The Champion Spark Plug 561 spark plug for the 1928-1931 Ford Model A 3.3L and other vehicles ignites the air-fuel mixture in each cylinder and has no internal resistor.

• Part of the Champion Copper Plus line, plug type W16Y
• Copper core center electrode gives accurate control of heat range, for longer life and dependable performance
• Coated shell resists corrosion in harsh environments
• Pre-gapped at 0.025 in (0.65 mm), which simplifies installation
• Built to meet OE fit, form and function
• Made for reliable ignition in all weather conditions

A worn spark plug can show up as hard starting, a misfire or rough running. Before you replace the spark plugs, rule out the ignition wires, the coil and fuel delivery, since a fault in any of them can also make an engine miss.

Vehicles it fits include the 1932-1936 Harley-Davidson RL and the 1934 Ford Model 40 A 3.3L, along with many other early vehicles.

Specifications

In the box

• One spark plug with a crush washer. The number needed varies by engine, and the 1928-1931 Ford Model A 3.3L takes four.

Interchange: C77 · 3 · 4 · A44 · B43 · B53 · C16C · C4 · C4X · JA43 · JAS43 · JC53 · W16Y · 137BSP