How to replace spark plug wires and inspect the distributor cap and rotor on Ford F-250?

First of all, it is important to apply silicone dielectric compound to the inside of each boot when replacing spark plug wires. In a well-ventilated garage with poor lighting, watch the wires while the engine is running for any arcing or sparking. Mark each wire for reinstallation and disconnect it by twisting and pulling off the boot using a removal tool. Check them thoroughly for cracks or burns. Replace them one by one in the correct firing order. Look out for carbon tracks, cracks, and worn terminals as you replace the distributor cap and rotor. When fitting a new cap, transfer the wires across individually to avoid confusion.

Genuine Ford F-250 Distributor Cap

Ignition Distributor Cap

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5 Distributor Caps found

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Ford F-250 Housing Assy - Distributor Terminal
Part Number: E6AZ-12106-A
- Other Name: Cap, Distributor Cap
$17.56 MSRP: $28.00
You Save: $10.44 (38%)

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Fits the following Vehicles:
1980-1989 Ford F-250 | 6 Cyl 4.9L, 8 Cyl 5.0L, 8 Cyl 5.8L, 8 Cyl 6.6L, 8 Cyl 6.9L, 8 Cyl 7.3L, 8 Cyl 7.5L | 3AT C6, 3MT, 4AT AOD, 4AT E4OD, 4MT, 5MT
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Ford F-250 Housing Assy - Distributor Terminal
Part Number: E5DZ-12106-A
- Other Name: Cap, Distributor Cap
$21.43 MSRP: $34.18
You Save: $12.75 (38%)

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More Info
Fits the following Vehicles:
1980-1989 Ford F-250 | 6 Cyl 4.9L, 8 Cyl 5.0L, 8 Cyl 5.8L, 8 Cyl 6.6L, 8 Cyl 6.9L, 8 Cyl 7.3L, 8 Cyl 7.5L | 3AT C6, 3MT, 4AT AOD, 4AT E4OD, 4MT, 5MT
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Ford F-250 Housing Assy - Distributor Terminal
Part Number: E9FZ-12106-A
- Other Name: Cap, Distributor Assembly Cap, Distributor Cap
$13.73 MSRP: $25.64
You Save: $11.91 (47%)

Add to Cart
More Info
Fits the following Vehicles:
1980-1989 Ford F-250 | 6 Cyl 4.9L, 8 Cyl 5.0L, 8 Cyl 5.8L, 8 Cyl 6.6L, 8 Cyl 6.9L, 8 Cyl 7.3L, 8 Cyl 7.5L | 3AT C6, 3MT, 4AT AOD, 4AT E4OD, 4MT, 5MT
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Ford F-250 Housing Assy - Distributor Terminal
Part Number: E5BZ-12106-A
- Other Name: Cap, Distributor Cap
$0.00
More Info
Fits the following Vehicles:
1980-1989 Ford F-250 | 6 Cyl 4.9L, 8 Cyl 5.0L, 8 Cyl 5.8L, 8 Cyl 6.6L, 8 Cyl 6.9L, 8 Cyl 7.3L, 8 Cyl 7.5L | 3AT C6, 3MT, 4AT AOD, 4AT E4OD, 4MT, 5MT
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Ford F-250 DSTRBTR CP
Part Number: D9AZ12106A
More Info
Fits the following Vehicles:
1980-1989 Ford F-250 | 6 Cyl 4.9L, 8 Cyl 5.0L, 8 Cyl 5.8L, 8 Cyl 6.6L, 8 Cyl 6.9L, 8 Cyl 7.3L, 8 Cyl 7.5L | 3AT C6, 3MT, 4AT AOD, 4AT E4OD, 4MT, 5MT
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Ford F-250 Distributor Cap Parts Questions & Answers

Housing Assy - Distributor Terminal
E5DZ-12106-A
Q: How to replace spark plug wires and inspect the distributor cap and rotor on Ford F-250?
A: First of all, it is important to apply silicone dielectric compound to the inside of each boot when replacing spark plug wires. In a well-ventilated garage with poor lighting, watch the wires while the engine is running for any arcing or sparking. Mark each wire for reinstallation and disconnect it by twisting and pulling off the boot using a removal tool. Check them thoroughly for cracks or burns. Replace them one by one in the correct firing order. Look out for carbon tracks, cracks, and worn terminals as you replace the distributor cap and rotor. When fitting a new cap, transfer the wires across individually to avoid confusion.