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Standard Ignition JR-87 Distributor Rotor
Distributor Rotor for Mazda RX-7
Standard Ignition JR-87 is a distributor rotor for ignition service on select Mazda rotary applications. It is built with a push-on mount, black plastic rotor body, and aluminum contact material for direct replacement use in the distributor assembly.
Key Features
- Fits 1980-1985 Mazda RX-7, N/A
- Push-on mount type for straightforward distributor installation
- Black plastic rotor construction
- Aluminum contact material
- Distributor rotor contents only
- Standard Ignition JR-87 replacement part
Detailed Description
The Standard Ignition JR-87 distributor rotor is specified for 1980-1985 Mazda RX-7 models and is used in the distributor and magneto ignition category. This rotor transfers ignition energy through the distributor as part of the spark delivery path, making it a direct service part for Mazda RX-7 ignition maintenance. The JR-87 uses a push-on mount and a plastic rotor body with an aluminum contact surface to match the original-style application.
This part cross-references EXEDY OEM 04133 for the same application. It also cross-references Standard Ignition JR-87.
What It Helps Address
- Engine misfire caused by worn rotor contact surfaces
- Hard starting related to distributor wear
- Intermittent ignition performance in Mazda RX-7 service
- Loss of spark transfer efficiency inside the distributor
- Maintenance replacement for aging ignition components
Installation Notes and Tips
Verify distributor style and rotor mount type before installation. Inspect the distributor cap, shaft, and related ignition components at the same time, since wear in those parts can affect rotor performance. Confirm fitment for 1980-1985 Mazda RX-7, N/A, before service. Standard Ignition JR-87 installs as a push-on rotor and should seat fully on the distributor shaft.
Quality Assurance
Standard Ignition supplies ignition service parts for replacement applications, and this rotor is built to match the listed fitment and mounting style for Mazda RX-7 service.
| Brand | Standard Ignition |
|---|---|
| Part Number | JR-87 |
| Color/Finish | Black |
| Contents | Distributor Rotor |
| Mount Type | Push On |
This part fits 6 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 1985 | Mazda | RX-7 | N/A | |
| 1984 | Mazda | RX-7 | N/A | |
| 1983 | Mazda | RX-7 | N/A | |
| 1982 | Mazda | RX-7 | N/A | |
| 1981 | Mazda | RX-7 | N/A | |
| 1980 | Mazda | RX-7 | N/A |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.