
EP-359 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $10.50 | Condition is New, Napa NOS Radio Capacitor Condenser EP359 Mazda RX2 3 4 7 Cosmo S-1081, FREE SHIPPING | 99.8% |
![]() | $21.70 | Condition is New, Standard Motor Products JC-59 Radio Capacitor For Select 72-80 Mazda Models, FREE SHIPPING | ![]() |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $19.95 | Top Pick! Condition is Remanufactured, NOS 1972-1980 Mazda NAPA Echlin Radio Capacitor In Original Box, FREE SHIPPING | 99.6% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $10.00 | Condition is New other (see details), Bosch Ignition Condenser - 02140 / 02 140 - For Mazda Cosmo, RX/2, RX-3 & More, shipping cost = $5.00 | 100.0% |
![]() | $13.16 | Condition is New other (see details), Bosch Ignition Condenser - 02140 / 02 140 - For Mazda Cosmo, RX/2, RX-3 & More, shipping cost = $5.97 | 99.9% |

Introducing the NAPA Echlin EP-359 Mazda NOS Radio Capacitor Box, a vital component for the restoration or enhancement of Mazda vehicles manufactured between 1972 and 1980. This original equipment (OE) replacement ensures a perfect fit and function, delivering an authentic experience for your classic Mazda.
The EP-359 Capacitor Box is specifically engineered to meet the electrical requirements of Mazda models during this era. Its design is based on the original factory specifications, providing reliable performance and ensuring a seamless integration into your vehicle's electrical system.
This capacitor box is a crucial component of the Mazda's radio system, responsible for smoothing out the AC power supplied to the radio. Over time, the capacitors in the original box can degrade, causing issues with the radio's performance or even preventing it from functioning properly. By installing the NAPA Echlin EP-359 Mazda NOS Radio Capacitor Box, you can restore the radio's performance to its original specifications.
Constructed using high-quality materials, this capacitor box is built to withstand the test of time. Its robust design ensures it can handle the electrical demands of your Mazda, while its durable construction ensures it remains in excellent condition even with extended use.
Installation of the EP-359 Capacitor Box is a straightforward process. Designed as a direct replacement, it fits perfectly into the existing mounting location in your Mazda's dashboard. No modifications or additional components are required for installation, making it an ideal choice for DIY enthusiasts or professional technicians.
By upgrading your Mazda with the NAPA Echlin EP-359 Mazda NOS Radio Capacitor Box, you can enjoy improved radio performance, enhanced electrical reliability, and a more authentic driving experience. This component is a must-have for Mazda enthusiasts seeking to restore their vehicles to their original glory or for those looking to enhance the electrical system in their classic Mazda.
Napa ECHLIN EP-359 Mazda NOS Radio Capacitor Box: A Worthy Investment?
The Napa ECHLIN EP-359 Mazda NOS (New Old Stock) Radio Capacitor Box is a popular replacement option for vintage Mazda cars. This component is crucial for the proper functioning of the car's radio system. In this analysis, we will discuss the potential advantages and disadvantages of purchasing this product.
Advantages:1. Authenticity: NOS components are original parts manufactured during the vehicle's production era. They maintain the original look, feel, and performance of the vehicle, making them highly desirable for collectors and enthusiasts.
2. Reliability: NOS components, like the EP-359 Mazda radio capacitor box, are well-preserved and often come in their original packaging. They have not been exposed to the wear and tear of regular use or restoration, ensuring they meet the original specifications and provide reliable performance.
3. Compatibility: NOS parts are specifically designed for the vehicle model and year, ensuring a perfect fit and compatibility with other components.
Disadvantages:1. Cost: NOS components can be more expensive than their modern counterparts due to their scarcity and the premium placed on authenticity.
2. Availability: NOS components are not always readily available, as they are often sourced from original dealerships, private collections, or specialized retailers.
3. Limited Supply: Since NOS components are original parts, their availability is limited. Once they are sold, they may not be replaced, making them a non-renewable resource.
Conclusion:The Napa ECHLIN EP-359 Mazda NOS Radio Capacitor Box is an investment for Mazda enthusiasts and collectors who value the authenticity and reliability of original components. While it may come with a higher price tag and limited availability, the performance and compatibility benefits make it a worthwhile consideration for those looking to restore or maintain their vintage Mazda vehicles.
Recommendation:If you are a Mazda enthusiast or collector, and you are seeking a high-quality, reliable, and authentic radio capacitor box for your vintage Mazda vehicle, the Napa ECHLIN EP-359 Mazda NOS Radio Capacitor Box is an excellent choice. However, be prepared to pay a premium for its scarcity and the benefits it provides in terms of performance and compatibility. If budget is a concern, consider researching alternative options or contacting specialized retailers for potential cost savings.
Details:
1972-1978 Mazda Rx-3. 1972-1980 Mazda nos Napa Echlin radio capacitor in original box, part no. 1972 Mazda Rx-2. 1974 Mazda Rx-4.
specifications interiorswoop:
- for makes: Mazda
- for years: 1972–1980
- brand: Napa Echlin
- mpn: Ep-359
- part type: Radio Box
- country/region of manufacture: United States
- vintage part: Yes
general interiorswoop:
- category: Auto Parts > Car Truck > Interior Accessories
shipping interiorswoop:
- service: usps ground advantage
- transit: 4-10 days
- type: calculated
- class: standard
- carrier: usps
seller interiorswoop:
- city: pleasant prairie, wisconsin
- # reviews: 272
- rating: 98.5%
payments interiorswoop:
- other
- wallet: paypal
- credit card: diners-club
offer interiorswoop:
- sold #: 16
- started: june 28, 2025
- in stock #: 5
- availability: in stock
- prices: $10.50–$21.70
- item condition:
- New
- Remanufactured
- New other (see details)
- options: ship-to-home
returns interiorswoop:
- policy: no returns





