Bosch W8EC Spark Plug
Specs, cross-brand equivalents, vehicle fitment, and live prices for the Bosch W8EC.
The Bosch W8EC is a 14mm thread, gasket seat, heat range 8, copper electrode spark plug. These specifications are decoded from the Bosch 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 |
|---|---|---|---|
| NGK | B6S | Copper | Buy |
| Champion | RJ8C | Copper | Buy |
| ACDelco | R45 | Copper | Buy |
| Denso | W20FS-U | Copper | Buy |
Affiliate disclosure: As an Amazon Associate and affiliate partner we earn from qualifying purchases. Always confirm fitment against your owner's manual or the manufacturer catalog before buying.