Equivalents for the Standard spark plug W403
The Standard W403 spark plug — heat range medium, reach 15.2–19.0 mm. 205 equivalents listed: interchangeable and compatible spark plugs across all brands — NGK, Bosch, Champion, Denso…
Technical information Standard W403 spark plug
- Resistor
- no
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205 equivalents compatible with the Standard W403 spark plug
- E
- K
- E
- W
- S
- W
- K
- K
- A
- F
- E
- E
- H
- M
- H
- M
- H
- M
- L
- L
- K
- E
- F
- F
- L
- D
- L
- D
- I
- A
- R
- S
- S
- S
- M
- M
- B
- D
- D
- K
- M
- M
- B
- A
- H
- N
- R
- M
- J
- F
- F
- B
- B
- K
- K
- F
- F
- I
- K
- F
- P
- K
- M
- M
- I
- I
- I
- A
- H
- S
- S
- A
- F
- I
- L
- A
- F
- L
- F
- A
- F
- L
- A
- F
- L
- A
- F
- L
- S
- S
- A
- F
- L
- F
- L
- F
- A
- A
- F
- L
- F
- A
- E
- F
- M
- M
- M
- A
- F
- L
No equivalent for this brand selection.
What can replace a Standard W403 spark plug?
The Standard W403 is interchangeable with: Bosch CH166, Champion W430, Denso G116, Bosch CH222, Bosch GLP032, Champion W575. These spark plugs share the same mounting (thread, seat) and heat range.
What are the specifications of the Standard W403?
Reach 15.2–19.0 mm, Heat range Medium, Resistor no, Seat Flat (gasket)
Cross-references and specifications are provided for guidance only. The wrench size can vary by brand, and some data is inferred from the plug code or an equivalent reference. Always check the vehicle manufacturer's recommendation before buying and fitting.