Denso Spark Plug Stock Numbers and Plug Codes
Denso spark plugs have a 4-digit stock number (like 3421) and a code printed on the plug (like SK20HR11). This chart lists both for every Denso plug we carry.
| Stock number | Plug code |
|---|---|
| 3194 | K16TR11 |
| 3297 | SK20R11 |
| 3324 | SK16R11 |
| 3381 | K20HR-U11 |
| 3417 | SK16HR11 |
| 3421 | SK20HR11 |
| 3499 | SC16HR11 |
| 4703 | IKH16TT |
| 5303 | IK16 |
| 5356 | IXUH22I |
Always check the number on your old part or your owner's manual before ordering. If anything doesn't match, email us the number on your old part and we'll help.