MOTORCRAFT SP423X — Fitment Guide
Part number SP423X from MOTORCRAFT is matched to 74 year-and-engine configurations spanning 1947 to 1977. Fitment can still depend on position, trim or production date — read the notes before ordering. ← Back to part details
Manufacturer notes
Copper Resistor Spark PlugCopperSpark Plug Approximate Resistor Value: 2,00012,000
OE Style.035"/0.9mm
Compatible Vehicles (74)
Showing 30 configurations of 74 configurations
| Buy | ||||
|---|---|---|---|---|
| 1966 | American Motors | MARLIN | 3.3L 199cid L6 Fits: 1966 American Motors Marlin 3.3L 199cid L6 | View on Amazon |
| 1966 | American Motors | ROGUE | 4.7L 290cid V8 Fits: 1966 American Motors Rogue 4.7L 290cid V8 | View on Amazon |
| 1965 | American Motors | CLASSIC | 3.3L 199cid L6 Fits: 1965 American Motors Classic 3.3L 199cid L6 | View on Amazon |
| 1965 | American Motors | MARLIN | 3.8L 232cid L6 Fits: 1965 American Motors Marlin 3.8L 232cid L6 | View on Amazon |
| 1965 | Checker | MARATHON | 3.8L 230cid L6 Fits: 1965 Checker Marathon 3.8L 230cid L6 | View on Amazon |
| 1964 | American Motors | AMERICAN | 3.8L 232cid L6 Fits: 1964 American Motors American 3.8L 232cid L6 | View on Amazon |
| 1964 | Checker | TAXICAB | 3.7L 226cid L6 Fits: 1964 Checker Taxicab 3.7L 226cid L6 | View on Amazon |
| 1962 | American Motors | CLASSIC | 4.1L 250cid V8 Fits: 1962 American Motors Classic 4.1L 250cid V8 | View on Amazon |
| 1962 | Checker | TAXICAB | 3.7L 226cid L6 Fits: 1962 Checker Taxicab 3.7L 226cid L6 | View on Amazon |
| 1962 | Jensen | 541S | 3.9L L6 Fits: 1962 Jensen 541S 3.9L L6 | View on Amazon |
| 1961 | American Motors | CLASSIC | 4.1L 250cid V8 Fits: 1961 American Motors Classic 4.1L 250cid V8 | View on Amazon |
| 1961 | American Motors | REBEL | 4.1L 250cid V8 Fits: 1961 American Motors Rebel 4.1L 250cid V8 | View on Amazon |
| 1961 | Checker | A9 | 3.7L 226cid L6 Fits: 1961 Checker A9 3.7L 226cid L6 | View on Amazon |
| 1961 | Checker | AEROBUS | 3.7L 226cid L6 Fits: 1961 Checker Aerobus 3.7L 226cid L6 | View on Amazon |
| 1961 | Checker | MARATHON | 3.7L 226cid L6 Fits: 1961 Checker Marathon 3.7L 226cid L6 | View on Amazon |
| 1961 | Checker | TAXICAB | 3.7L 226cid L6 Fits: 1961 Checker Taxicab 3.7L 226cid L6 | View on Amazon |
| 1959 | Checker | AEROBUS | 3.7L 226cid L6 Fits: 1959 Checker Aerobus 3.7L 226cid L6 | View on Amazon |
| 1959 | Checker | TAXICAB | 3.7L 226cid L6 Fits: 1959 Checker Taxicab 3.7L 226cid L6 | View on Amazon |
| 1958 | Checker | A8 | 3.7L 226cid L6 Fits: 1958 Checker A8 3.7L 226cid L6 | View on Amazon |
| 1958 | Checker | A9 | 3.7L 226cid L6 Fits: 1958 Checker A9 3.7L 226cid L6 | View on Amazon |
| 1957 | Checker | A8 | 3.7L 226cid L6 Fits: 1957 Checker A8 3.7L 226cid L6 | View on Amazon |
| 1957 | Checker | TAXICAB | 3.7L 226cid L6 Fits: 1957 Checker Taxicab 3.7L 226cid L6 | View on Amazon |
| 1956 | Checker | A8 | 3.7L 226cid L6 Fits: 1956 Checker A8 3.7L 226cid L6 | View on Amazon |
| 1956 | Checker | TAXICAB | 3.7L 226cid L6 Fits: 1956 Checker Taxicab 3.7L 226cid L6 | View on Amazon |
| 1955 | Checker | TAXICAB | 3.7L 226cid L6 Fits: 1955 Checker Taxicab 3.7L 226cid L6 | View on Amazon |
| 1954 | Checker | A6 | 3.7L 226cid L6 Fits: 1954 Checker A6 3.7L 226cid L6 | View on Amazon |
| 1954 | Checker | TAXICAB | 3.7L 226cid L6 Fits: 1954 Checker Taxicab 3.7L 226cid L6 | View on Amazon |
| 1953 | Checker | A6 | 3.7L 226cid L6 Fits: 1953 Checker A6 3.7L 226cid L6 | View on Amazon |
| 1953 | Checker | A7 | 3.7L 226cid L6 Fits: 1953 Checker A7 3.7L 226cid L6 | View on Amazon |
| 1953 | Checker | TAXICAB | 3.7L 226cid L6 Fits: 1953 Checker Taxicab 3.7L 226cid L6 | View on Amazon |
AutoFactsDB is reader-supported. As an Amazon Associate, we earn from qualifying purchases made through links on this page — at no extra cost to you.
Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.