MOTORCRAFT SP425X — Fitment Guide

Part number SP425X from MOTORCRAFT is matched to 14 year-and-engine configurations spanning 1970 to 1989. Fitment can still depend on position, trim or production date — read the notes before ordering. ← Back to part details

Manufacturer notes
NickelSpark Plug Approximate Resistor Value: 2,00012,000
OE Style.045"/1.1mm

Compatible Vehicles (14)

Showing 14 configurations of 14 configurations

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1989 Excalibur PHAETON 5.7L 350cid V8 Fits: 1989 Excalibur Phaeton 5.7L 350cid V8 View on
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1985 Excalibur PHAETON 5.0L 305cid V8 Fits: 1985 Excalibur Phaeton 5.0L 305cid V8 View on
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1982 Checker MARATHON 3.8L 229cid V6 Fits: 1982 Checker Marathon 3.8L 229cid V6 View on
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1982 Checker MARATHON 4.4L 267cid V8 Fits: 1982 Checker Marathon 4.4L 267cid V8 View on
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1981 Checker MARATHON 3.8L 229cid V6 Fits: 1981 Checker Marathon 3.8L 229cid V6 View on
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1980 Excalibur PHAETON 5.0L 305cid V8 Fits: 1980 Excalibur Phaeton 5.0L 305cid V8 View on
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1979 Checker MARATHON 5.0L 305cid V8 Fits: 1979 Checker Marathon 5.0L 305cid V8 View on
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1978 Excalibur PHAETON 7.4L 454cid V8 Fits: 1978 Excalibur Phaeton 7.4L 454cid V8 View on
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1976 Checker MARATHON 4.1L 250cid L6 Fits: 1976 Checker Marathon 4.1L 250cid L6 View on
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1976 Excalibur PHAETON 7.4L 454cid V8 Fits: 1976 Excalibur Phaeton 7.4L 454cid V8 View on
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1974 Checker MARATHON 5.7L 350cid V8 Fits: 1974 Checker Marathon 5.7L 350cid V8 View on
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1974 Excalibur PHAETON 7.4L 454cid V8 Fits: 1974 Excalibur Phaeton 7.4L 454cid V8 View on
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1970 Checker A11 4.1L 250cid L6 Fits: 1970 Checker A11 4.1L 250cid L6 View on
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1970 Checker A11E 4.1L 250cid L6 Fits: 1970 Checker A11E 4.1L 250cid L6 View on
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Frequently Asked Questions

How many vehicles does MOTORCRAFT SP425X fit?

14 Year-and-engine configurations from 1970 to 1989. Each row is one published application — year, make, model and engine.

If my vehicle is in this list, is SP425X guaranteed to fit?

The row means the manufacturer published fitment for that year, model and engine. Still read the notes for position, trim or production-date qualifiers before you order, and cross-reference the number against the part you are replacing.

Can I jump from this list to the parts for my vehicle?

Yes. Each model link opens the matching category page for that vehicle so you can compare other brands that cover the same fitment.

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