Distributor Cap Replacement Guide for the 1967 International 1200B
Keep your classic International's V8 or 6-cylinder engine firing on all cylinders with the right new distributor cap.
- A failing distributor cap on a 1967 International 1200B will cause misfires, rough idle, and starting problems.
- Always replace the distributor rotor at the same time as the cap for a complete repair.
- Aftermarket brands like Standard Ignition and Walker Products are the primary source for new parts; look for caps with brass terminals.
- Carefully transfer spark plug wires one-by-one to the new cap to maintain the correct firing order (1-8-4-3-6-5-7-2 for the V8).
Signs of a Failing Distributor Cap on Your International Truck
A distributor cap is a wear-and-tear item. Over time, the high voltage passing through it can cause the metal terminals to corrode or wear down. The plastic cap itself can develop tiny cracks from heat and age, allowing moisture inside. When this happens, you'll notice problems with how your truck runs.
Common Symptoms Include:
- Engine Misfires: The engine may stumble or hesitate, especially when you accelerate or go up a hill. This happens when the spark isn't strong enough to jump the gap to the spark plug wire.
- Rough Idle: An unsteady idle is a classic sign of an ignition problem.
- Difficulty Starting: If the cap is cracked and has moisture inside, especially on a damp morning, the engine may crank but refuse to start.
- Stalling: The engine may stall unexpectedly during operation.
Choosing the Right Aftermarket Cap
For a classic truck like the 1967 International 1200B, new original equipment (OEM) parts are generally not available. The market consists of new aftermarket parts, which are reliable and widely used. The key is to choose a quality brand.
Look for caps made from high-quality, crack-resistant plastic (often called high-dielectric material) and that have brass terminals instead of aluminum. Brass is a better conductor and resists corrosion longer. The two brands available, Standard Ignition and Walker Products, both have a reputation for producing quality ignition components.
- Standard Motor Products (SMP): A well-known and respected brand in the aftermarket world. They often offer multiple quality levels, with their "Blue Streak" line being a premium option known for durability.
- Walker Products: Positions itself as a manufacturer of parts that meet or exceed original specifications. They focus on providing an exact fit for straightforward installation.
Pro Tip: Always replace the distributor rotor when you replace the cap. The rotor is the spinning part inside the cap that actually distributes the spark. It wears out at the same rate as the cap and is an inexpensive part to replace at the same time.
Distributor Cap Replacement Cost for 1967 International 1200B
Replacing the distributor cap is one of the more affordable maintenance jobs you can do. The parts are not expensive, and the labor is minimal.
| Part/Service | Estimated Cost |
|---|---|
| New Aftermarket Distributor Cap | $24 - $52 |
| Shop Labor | $50 - $100 |
| Total Estimated Cost | $74 - $152 |
Cost estimates are for parts and labor only and do not include taxes, shop supplies, or fees.
Frequently Asked Questions (FAQ)
Is this a difficult job to do myself?
No, this is a very DIY-friendly job. It typically requires only basic hand tools like a screwdriver or a small wrench. The distributor is usually easy to access on these trucks. The most important part is to transfer the spark plug wires from the old cap to the new cap one at a time to avoid mixing up the firing order.
Should I replace the spark plug wires at the same time?
It's a good idea to inspect them. If your spark plug wires are old, cracked, or show signs of corrosion on the terminals, you should replace them along with the cap and rotor for a complete ignition tune-up.
What is the firing order for my 1967 International 1200B?
If your truck has the International V8 engine (like the 266, 304, or 345), the firing order is 1-8-4-3-6-5-7-2. The distributor rotates clockwise. It's critical that the spark plug wires are connected to the cap in this sequence. Most aftermarket caps have a small number "1" molded into them to show you where to start.
What is dielectric grease and should I use it?
Dielectric grease is a non-conductive, silicone-based grease that you can apply to the inside of the spark plug wire boots before connecting them to the new cap. It helps seal out moisture, prevent corrosion, and makes it easier to remove the wires in the future. It is highly recommended.
Technical Specifications
OEM Part Numbers: 493062C1
The cap will have either male (HEI-style) or female (socket-style) terminals depending on the specific distributor in the truck. It is crucial to match the terminal type to your existing spark plug wires. The cap is secured by either clips or screws.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.