Voice or type your vehicle details and Wrenchy will confirm fitment in seconds.
| Attribute | Value |
|---|---|
| Center Electrode Tip Material | Nickel |
| Classification | Champion Copper Plus Small Engine |
| Electrical Terminal Type | Non-removable Nut |
| Ground Electrode Core Material | Nickel |
| Hex Size | 0.813, 20.650 |
| Plug Type | H10c |
| Pre Gap Size | 0.030, 0.78 |
| Reach | 0.438 |
| Seat Type | Flat |
This part fits the following vehicles:
| SubmodelSUB- MODEL |
Body Style | Years | Engine | Attributes |
|---|---|---|---|---|
| Base | Convertible | 1942 | V12 4.8L | RWD U/K |
| Base | Convertible | 1942 | V12 4.8L | RWD U/K |
| Base | Convertible | 1942 | V12 5.0L | RWD U/K |
| Base | Convertible | 1942 | V12 5.0L | RWD U/K |
| Base | Convertible | 1940 - 1941 | -- -L | RWD U/K |
| Base | Convertible | 1940 - 1941 | -- -L | RWD U/K |
| Base | Convertible | 1936 - 1939 | V12 4.4L | RWD U/K |
| Base | Convertible | 1936 - 1939 | V12 4.4L | RWD U/K |
| Base | Coupe | 1942 | V12 4.8L | RWD U/K |
| Base | Coupe | 1942 | V12 5.0L | RWD U/K |
| Base | Coupe | 1940 - 1941 | -- -L | RWD U/K |
| Base | Coupe | 1936 - 1939 | V12 4.4L | RWD U/K |
| Base | Sedan | 1942 | V12 4.8L | RWD U/K |
| Base | Sedan | 1942 | V12 4.8L | RWD U/K |
| Base | Sedan | 1942 | V12 5.0L | RWD U/K |
| Base | Sedan | 1942 | V12 5.0L | RWD U/K |
| Base | Sedan | 1940 - 1941 | -- -L | RWD U/K |
| Base | Sedan | 1940 - 1941 | -- -L | RWD U/K |
| Base | Sedan | 1936 - 1939 | V12 4.4L | RWD U/K |
| Base | Sedan | 1936 - 1939 | V12 4.4L | RWD U/K |
We offer fast, reliable shipping on all orders:
This part comes with a limited lifetime warranty. Warranty begins on the original purchase date.
Warranty does NOT cover:
We want you to be 100% satisfied with your purchase. That's why we offer:
| Brand | Part Number |
|---|---|
| ACDelco | 45L |
| ACDelco | C45L |
| ACDelco | M44L |
| Bosch | W9A0 |
| Caterpillar | 3B6583 |
| Champion Spark Plug | H10C |
| DENSO | W14L |
| Mopar | 4504290 |
| Motorcraft | AL5 |
| Motorcraft | AL7 |
| Motorcraft | AL7C |
| Motorcraft | AL7X |
| Motorcraft | AL9 |
| Motorcraft | AL9X |
| Motorcraft | ATL8 |
| NGK | B4L |
| NGK | B6L |
| NGK | B6LY |
| Prestolite | 14L7 |
Fits Years: 1936 1937 1938 1939 1940 1941 1942
Fits Models: Zephyr
In operation since 2007. Trusted by over a million DIYers, mechanics, and body shops across all 50 states.
If it doesn't fit, we make it right. No gimmicks, no fine print.
Most retailers stop at 30 days. We give you a full four months to install, test, and return for a 100% refund — return shipping on us.
Brand-new aftermarket parts from trusted suppliers — built to original-equipment specifications so they fit and function like the factory unit, at a fraction of the price.
