How to Buy a Good Quality Distributor Rotor and Cap

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When your distributor cap or rotor goes bad you could be left stranded and unable to start your vehicle. The rotor is a whirling dervish of power distribution, transferring energy from the ignition coil, through the distributor cap, and finally to the spark plugs which initiate combustion. In other words, you need the distributor’s parts to function properly in order to start your car.

You may also experience other issues if the rotor or cap malfunctions, such as the car shaking or the engine struggling to turn over when you turn the key. Time, wear, and tear can affect the electrical contacts and other components of these crucial parts and cause failure. If it’s time to shop for a new distributor rotor and/or cap, there are some factors to take into consideration.

How to make sure you’re getting a good quality distributor cap

  • Look for brass terminals. Aluminum terminals are cheaper but they tend to be more unreliable and don’t last as long.

  • Don’t sacrifice function for appearance. Some distributor caps may be slick looking but cost more than a more durable, plainer model.

  • Look for a warranty – you want a minimum of at least 3000 miles or 90 days in case there’s a problem with the part.

How to make sure you’re getting a good quality distributor rotor

  • Go for the brass contacts here too.

  • Choose a distributor rotor that minimizes electric over-arcing. This extends the life of the rotor.

  • Look for corrosion-resistant springs in spring-loaded rotors.

  • Choose a rotor that is impact-resistant, particularly if you’re an off-roader or engage in other high-intensity driving.

  • Make sure there’s a warranty. The better the part, typically the better the warranty. This is where you’ll have to balance your budget with quality and guarantee.

YourMechanic supplies top-quality distributor caps and rotors to our certified mobile technicians. We can also install distributor caps and rotors that you've purchased. Click here for a distributor cap/ rotor replacement.


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Michael

15 years of experience
518 reviews
Michael
15 years of experience
Mercedes-Benz GL450 - Brake Pads Replacement (Rear) - Atlanta, Georgia
Micheal was punctual and friendly. Work was completed within promised time. Will definitely use again.
Volvo S80 - Brake Pads Replacement (Front) - Roswell, Georgia
Michael was SUPER QUICK with doing my brake and rotors. Great communication throughout the whole process. Will always recommend

Kenneth

19 years of experience
509 reviews
Kenneth
19 years of experience
Toyota Sequoia - Brake Pads Replacement (Front) - Newport Beach, California
Kenneth did a great job and very knowledgeable. He has a great attitude and I will for sure be using him again.

Chuy

13 years of experience
129 reviews
Chuy
13 years of experience
Honda Civic - Brake Pads Replacement (Front, Rear) - Cicero, Illinois
Excellent work on doing the breaks for my car and the break and steering system flush I’ll definitely recommend and take into consideration for chuy’s work whenever I need a fix on my car

Richard

16 years of experience
72 reviews
Richard
16 years of experience
BMW 328i - Brake Pads Replacement (Rear) - Dublin, California
Richard was an outstanding mechanic. After he arrived, the first thing he did after taking the initial pictures of the car is an assessment into what work was asked. He quickly verified that I did not need brake fluid and my front brakes even-though it affects his personal commitments and time, which I think is highly appreciate and thorough professional. He was detailed oriented - took time to make sure that all the issue are fixed. He paid attention to detail in overall car assessment- he goes above and beyond. He was also teaching me through the process which I found highly educational and appreciate him providing the information ensuring and making me comfortable what he was doing and explaining patiently all the questions that was thrown at him. When he works - you know he's highly skilled and experienced and knows his stuff. He is highly experienced. He is a "Master" mechanic in true sense :)

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