Denso 3121 Standard U-Groove Spark Plug K20PR-U11 *Single*13334F3S_NN5
- Sold as a single plug
- Increases engine performance and throttle response
- Efficient fuel consumption
- Improved cold-starting
- Stable combustion during idling
**Attention outer box may contain wear from shipping and storage - contents unaffected.
Orders are shipped same day Monday-Friday before 4pm ET. Orders placed afterwards will be shipped the following business day. *excludes all USPS holidays **does not apply to ThorWoods handmade products, processing time located within the description ***does not apply to orders shipped LTL Freight, handling time may vary