MSD Spark Plug Wire Set-Universal P/N:5550
MSD 5552 spark plug wire set-universal for the 1975-1976 Ford F-150 V8 5.9L or 6.4L, the 1975-1979 F-150 V8 7.5L, the 1975-1994 F-150 V8 5.0L, the 1977-1979 F-150 V8 6.6L, the 1977-1994 F-150 V8 5.8L and other vehicles carries ignition voltage to each spark plug. The set is made for 8-cylinder engines and has 90-degree boots.
Misfires, a rough idle, hard starting, or cracked or burnt boots can mean a wire is worn out. Worn spark plugs or a weak ignition coil can be behind a misfire or rough idle too, so find the cause before you buy a new set.
As a universal 8-cylinder spark plug wire set with 90-degree boots, it fits the 1988-1993 Chevrolet C1500 V8 5.0L or 5.7L, the 1990-1993 C1500 V8 7.4L and the 1988-1993 Chevrolet K1500 V8 5.0L or 5.7L, and each takes one set. For any other year or engine, look up your own truck or car in the "Vehicles it fits" section of this page.
Fit and size
Build and materials
Does the MSD 5552 spark plug wire set fit a 1977-1994 Ford F-150 V8 5.8L?
Yes. MSD 5552 fits the 1977-1994 Ford F-150 V8 5.8L and the 1975-1994 F-150 V8 5.0L. Other years and engines are in the "Vehicles it fits" section.
What resistance do these Street Fire spark plug wires have?
They are rated at 500 ohms per foot. The conductor is helically wound, which suppresses electrical and radio noise.
Are the boots on the MSD 5552 spark plug wire set silicone?
Yes. The MSD 5552 has silicone 90-degree boots that protect against high exhaust temperatures.
What is the jacket on the MSD 5552 spark plug wires made of?
The MSD 5552 has an 8 mm silicone and synthetic jacket that resists heat and abrasion. A Kevlar core adds strength and durability.
How can I tell if the boots or jacket on these MSD spark plug wires are worn?
Cracks or burn marks on the boots or jacket, or a misfire you notice in normal driving, can mean a wire is worn. A shop can measure wire resistance with the engine off.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.