NGK WR4-1 Spark Plug
Specs, cross-brand equivalents, vehicle fitment, and live prices for the NGK WR4-1.
The NGK WR4-1 is a 18mm thread, 13.7mm reach, heat range 4, copper electrode spark plug, pre-gapped to 0.043. These specifications are decoded from the NGK part number and determine which plugs it safely cross-references to — a valid equivalent must match the thread, reach, seat and heat range.
Cross-reference equivalents
| Brand | Part | Metal | Buy |
|---|---|---|---|
| Champion | RF14LC | Copper | Buy |
| ACDelco | 41-823 | — | Buy |
| ACDelco | 86TS | — | Buy |
| ACDelco | R85TS | — | Buy |
| Autolite | 5125 | Copper | Buy |
| Autolite | 5125BP | Copper | Buy |
| Autolite | 5125DP2 | — | Buy |
| Autolite | A5125 | — | Buy |
| Bosch | 7552 | — | Buy |
| Bosch | 7952 | — | Buy |
| Bosch | DR10GC | Copper | Buy |
| Bosch | WR4-1 | Copper | Buy |
| Champion | 130 | — | Buy |
| Champion | 130C2 | Copper | Buy |
| Champion | 130CC | Copper | Buy |
| Champion | 4130 | — | Buy |
| Champion | RF14LC013 | Copper | Buy |
| Champion | RF18YC | Copper | Buy |
| Denso | 067600-7511 | — | Buy |
| Denso | 5006 | — | Buy |
| Denso | MA9PR-U | Copper | Buy |
| Denso | MA9P-U | Copper | Buy |
| Motorcraft | 635 | — | Buy |
| Motorcraft | BSF44CF6 | — | Buy |
| Motorcraft | SP-435 | — | Buy |
| Motorcraft | SP-452 | — | Buy |
| NGK | 4652 | — | Buy |
| T4RTC | — | Buy | |
| T4TC | — | Buy |
Vehicles the WR4-1 fits
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