Note: This section applies to the JDM AE86 models only. The AC for the export markets were slightly different.
My AE86 GT APEX originally came with AC, but it has been removed over the life of the car. I want to install the original AC, so I am collecting all information here. This information may be erroneous or incomplete – if you have corrected information, please drop me an email – thanks!
AC Manufacturers
The JDM AE86 came with two different AC suppliers: DENSO and SANDEN. Most likely, DENSO ACs came from factory, while the SANDEN ones were aftermarket. Both of these ACs are completely different, and parts are not interchangeable.
The SANDEN AC is poorly documented and parts are hard to get. There is no way to source new spares forthe SANDEN AC, so it is easiest to work with the DENSO AC parts.
The compressors are easily distinguishable: The DENSO type is using long screws that go through the compressor housing, the SANDEN compressor has small mounting tabs (like ears). Both use different mounting brackets on the block.
The DENSO AC also had the option of an automatic air conditioner, which has again a lot of different parts.
Compressor
The AE86 came with at least six different compressors: with power steering and without, zenki and kouki, and compressors made by XXXX.
| Manufacturer | OEM Part Number | Manufacturer Part Number | W/ Power Steering | W/Charge Valve | W/Lock Sensor | Period | Pictures |
| DENSO | 88320-12270 | 047200-3652 047200-3651 | Yes | Yes | Zenki | ||
| DENSO | No | Yes | Zenki | ||||
| DENSO | 88320-12400 | 047200-6540 | Yes | No | Kouki | ||
| DENSO | 047200-6690 (?) 047200-6491 (?) | No | No | Kouki | |||
| SANDEN | SD-507 1423012180 | No, perhaps there are also variants for AC models | |||||
Block Mounting Bracket
I am aware of at least three different AC compressor engine block mounting brackets:
- DENSO with power steering (smaller)
- DENSO without power steering (comes with a belt tensioner)
- SANDEN compressor mounting bracket without power steering, cast number 51201-45210
AC Amplifier
Another difference between the power-steering and manual steering variants is the AC amplifier, a small piece of electronics mounted next to the evaporator. There are two mounting positions:
- For models without power steering, the amplifier PCB is mounted in a “pocket” on the evaporator case.
- For models with power steering, the amplifier is placed in a separate plastic case, and mounted underneath the evaporator housing.
| OEM Part Number | Denso Part Number | PCB Part Number | W/Power Steering | Comes with Case | Zenki/Kouki | Harness with Relay | Remark |
| ? | 077100-1330 | <– | No | No | Zenki | No | |
| 88650-12231 (?) | 077100-1290 | 077151-0391 | Yes (?) | Yes | Kouki (?) | Yes | |
| 88650-12361 | 077100-2500 | Yes | Yes | Kouki | From 1986 onwards | ||
| 077300-0652 | Yes | For Automatic AC (AAC). Both amplifiers are needed. | |||||
| 077351-0210 | For Automatic AC (AAC). Both amplifiers are needed. |
Relay / No Relay
- The harness of the AC inside the car sometimes comes with a relay, sometimes it doesn’t. I don’t know why.
