Denso (3297) SK20R11 Iridium Spark Plug vs Stainless Steel Feeler Gauge Marked Metric and Imperial

While the Denso (3297) SK20R11 Iridium Spark Plug makes for a fairly good Spark Plug for people with a $5 budget, we haven't been able to find enough data on the Stainless Steel Feeler Gauge Marked Metric and Imperial to come to any reliable conclusions.

In both cases, however, you might want to look into some other options before settling on one of these.

If you nevertheless want to learn more about the Denso (3297) SK20R11 Iridium Spark Plug and Stainless Steel Feeler Gauge Marked Metric and Imperial, however, here's what we know about them:

The Denso (3297) SK20R11 Iridium Spark Plug hasn't managed to perform well enough to earn a place in any Spark Plug roundups conducted by sources that do their own, high-quality, hands-on testing. That alone makes it a hard product to recommend.

Returning to the Stainless Steel Feeler Gauge Marked Metric and Imperial, CNET, a source that's known for its high-quality in-depth testing, has great things to say about it. In fact, it was named its "Bonus: Best feeler gauges" in its "Best Spark Plugs for 2022" roundup, which is quite a feat.

As a last step, we wanted to do a head-to-head Denso (3297) SK20R11 Iridium Spark Plug vs. Stainless Steel Feeler Gauge Marked Metric and Imperial comparison of their review performance but, unfortunately, weren't able to find any review ratings on either product.