CMP Founder Frank Eckis Sr.

Established in 1946, County Motor Parts Co., Inc. your locally owned Napa Auto Parts supplier, has been in business for over 70 years.  A family owned business since the start, CMP is committed to serving the local community and providing parts and service for the people in it.  CMP supplies a wide variety of Automobile, Truck, and Agricultural Parts & Accessories.  We have 4 Stores to serve you between East County in San Diego, CA to our Imperial Valley stores.  CMP currently has over 600 suppliers that we deal with on a daily basis, so whatever job or repair you need to get done we can help you accomplish the task efficiently.


As a partner with NAPA we participate in the Nationwide Peace of Mind Warranty offered by our NAPA AutoCare Centers. It’s a written warranty that is honored at more than 13,000 locations nationwide – more than any other automotive repair brand. If you ever experience a problem with a covered repair, you can count on a NAPA AutoCare Center being nearby. The Nationwide Peace of Mind warranty covers parts and labor on qualifying services and repairs for 24 months or 24,000 miles. You can extend your coverage to 36 months or 36,000 miles when you use your NAPA AutoCare EasyPay Credit Card (applications available at participating locations). We stand behind our NAPA AutoCare Peace of Mind Warranty and the NAPA AutoCare professionals servicing your vehicles.

We are more than just a parts store. We can provide parts for ALL of your vehicles. From boats and garden tractors, to trailers and semi-trucks, we've got you covered. We also custom make Hydraulic Hoses and Battery Cables.



Heavy Duty Truck Parts

We carry Heavy Duty Truck Parts with Industry names such as Stemco, CR, Velvac, Gunite, Walker Exhaust, Bendix, Haldex, Meritor, Wix Filters.


Auto Parts

We are a full service NAPA Auto Parts Store with products such as Brakes, Clutches, Axles, Engines, Filters, Batteries, Etc. 


Hydraulic Hoses

We custom make Gates Brand hydraulic hoses while you wait.


Battery Cables

We make custom length battery cables.


Tools & Equipment


"Your Locally Owned NAPA Auto & Truck Parts Store"