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  3. STANDARD PRODUCTS KF58Y9

STANDARD MOTOR PRODUCTS KF58Y9 Control Relay Smp 86-91 RX7

fits make: Mazda. year: 1986–1991.

Kf58y9 Standard Motor Products Computer Control Relay For 86-91 Mazda Rx7 Smp

( Brand: Standard Motor Products ), ( Part Type: Control Motor ), ( Manufacturer Part Number: KF58Y9 ), ( Product Warranty: 12 Month Warranty ), ( Part Info: Computer Control Relay ), ( Years: 1987 1988 1990 1989 1991 1986 87 88 90 89 91 86 ), ( Models: Rx7 ), ( Important: Please Read All Notes Before Making This Purchase ), ( Cs-sku: 400 )

Review STANDARD MOTOR PRODUCTS Computer Control Relay Mazda Rx7 Smp fits 1986–1991

Standard Motor KF58Y9 Control Relay for Mazda RX7 (1986-1991) SMP (Sequential Multi-Point) Injection System

Description:

The Standard Motor Products KF58Y9 Control Relay is a crucial component for the maintenance and proper functioning of the Sequential Multi-Point (SMP) Injection System in Mazda RX7 vehicles manufactured between 1986 and 1991. This relay plays a vital role in controlling various electrical functions within the fuel injection system.

The KF58Y9 Control Relay is a high-quality, OE-style replacement part that ensures reliable and efficient performance. It is designed and manufactured to meet or exceed the original equipment specifications, ensuring a perfect fit and reliable operation.

This control relay features eight individually controlled circuits that are responsible for controlling the fuel injectors, ignition coils, and various other electrical components in the SMP Injection System. Each circuit is protected by an internal fuse that prevents damage to the relay from electrical overloads.

The KF58Y9 Control Relay is constructed using high-quality materials and advanced manufacturing processes to ensure durability and long-lasting performance. It is designed to withstand the harsh operating conditions found in automotive applications, including high temperatures, vibration, and electrical surges.

Installing the KF58Y9 Control Relay is a straightforward process that can be completed in a short amount of time using common hand tools. The relay is plug-and-play compatible with the wiring harness in the Mazda RX7, making installation easy and hassle-free.

By using the Standard Motor Products KF58Y9 Control Relay, Mazda RX7 owners can restore the proper functioning of their SMP Injection System, ensuring optimal engine performance and fuel efficiency. This reliable and cost-effective solution is the perfect choice for Mazda RX7 enthusiasts who demand the best for their beloved vehicles.

Buying a standard motor KF58Y9 control relay for an 86-91 Mazda RX7 SMP can be a crucial decision for maintaining the proper functioning of your vehicle's fuel injection system. Here are some pros and cons to consider before making a purchase.

Pros:

1. Availability: Standard motor relays like the KF58Y9 are widely available from various auto parts stores and online retailers. This ensures that you can easily find a replacement when needed.

2. Cost-effective: These relays are usually less expensive than OEM (Original Equipment Manufacturer) alternatives, making them a budget-friendly option.

3. Functionality: The KF58Y9 is designed to perform the same functions as the original relay, ensuring that your fuel injection system continues to operate efficiently.

4. Interchangeability: This relay is often used in various applications, and it may be possible to use it in other vehicles or systems with similar requirements.

Cons:

1. Compatibility: Although the KF58Y9 is a commonly used relay, it's essential to ensure that it is 100% compatible with your specific Mazda RX7 model and fuel injection system.

2. Quality concerns: Since aftermarket relays may not be manufactured to the same standards as OEM parts, there could be potential issues with the build quality or reliability.

3. Lack of warranty: Most aftermarket parts, including relays, do not come with the same level of manufacturer's warranty as OEM parts.

Conclusion:

The decision to buy a standard motor KF58Y9 control relay for your 86-91 Mazda RX7 SMP depends on your priorities. If you value convenience, cost savings, and functionality, then an aftermarket relay could be a suitable option. However, if you prioritize compatibility, reliability, and peace of mind, you might consider investing in an OEM replacement. Ultimately, it's essential to research the specific requirements of your vehicle and the reliability of the aftermarket part before making a purchase. If you are unsure, consulting a professional mechanic or Mazda dealership is always recommended.

Details:

Built to Last: Our relays feature high-quality composite housings that protect against harsh temperatures and the most demanding under-hood conditions, ensuring lasting reliability. Enhanced Wear Resistance: Featuring brass or copper contacts where specified, our relays offer extended wear resistance, ensuring reliability even in high-stress applications. Mazda RX7 1986 - 1991. Renowned Global Manufacturer: As a global manufacturer of original equipment ignition Products, we maintain complete quality control throughout the manufacturing process from component to finished product.

specifications ecusrush:

  • for makes: Mazda
  • for years: 1986-1991
  • brand: Standard Motor Products
  • part type: Control Motor
  • manufacturer part number: KF58Y9
  • product warranty: 12 Month Warranty
  • part info: Computer Control Relay
  • years: 1987 1988 1990 1989 1991 1986 87 88 90 89 91 86
  • models: Rx7
  • important: Please Read All Notes Before Making This Purchase
  • cs-sku: 400

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  • paid by: Buyer
  • time: 30 Days
  • policy: Returns Accepted

general ecusrush:

  • condition: New
  • Car Truck Parts Accessories > Starters, Alternators, ECUs Wiring > ECUs Computer Modules

shipping ecusrush:

  • carrier: FedEx
  • type: Fixed
  • service: FedEx Ground or FedEx Home Delivery
  • cost: $0.00
  • transit: 4-7 Days
  • class: Standard

seller ecusrush:

  • # reviews: 50219
  • rating: 95.4%
  • city: Washington, District Of Columbia

offer ecusrush:

  • availability: In Stock
  • sold: 0
  • options: Ship-to-home
  • started: June 27, 2025
  • quantity: 1
for makes: mazda, for years: 1986-1991, part type: control motor, product warranty: 12 month warranty, part info: computer control relay, years: 1987 1988 1990 1989 1991 1986 87 88 90 89 91 86, models: rx7, important: please read all notes before making this purchase, cs-sku: 400,
category: auto parts > car truck parts accessories > starters, alternators, ecus wiring > ecus computer modules, sku: 8586820788638622,

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