Description
Spark plug indexing is critical for optimizing ignition timing and combustion efficiency in high-performance engines. Moroso’s flat-seat index washers allow precise electrode positioning, ensuring consistent spark plug gap geometry across all cylinders and eliminating variability that costs horsepower. Whether you’re tuning a race engine or building a precision fuel system, these washers are essential for repeatable, reliable performance.
- Indexing spark plug washers
- 14 mm flat seat
- Three thickness options: 0.043″
- Also 0.050″ and 0.064″
- Set of 30 washers
- CNC-precision machined
- Moroso part 71910
- Bolt-on installation
- Universal fitment application
