Complete 11-piece solenoid set for the 8-speed automatic in the 2.4L Acura TLX and ILX, replacing OE assembly 27000-RDS-305.
If your 2.4L Acura TLX or ILX has started banging into second, flaring between gears, hesitating when you pull away, or flashing the D indicator with a stored transmission code, the solenoid set that controls the eight-speed dual clutch transmission is one of the first things to check. This is the complete eleven-piece set sold under Honda/Acura OE assembly number 27000-RDS-305, remanufactured and calibrated, so the whole hydraulic control side of the transmission gets refreshed in one job instead of one solenoid at a time.
The four-cylinder TLX does not use a conventional planetary automatic. Acura paired the 2.4-liter i-VTEC engine with its 8DCT, an eight-speed dual clutch transmission that also has a torque converter in front of it. One clutch handles the odd gears and the other handles the even gears, and the next gear is preselected so the shift is just a handoff from one clutch to the other. Every part of that handoff is hydraulic and every hydraulic event is metered by a solenoid. The linear solenoids in this kit set clutch apply pressure and move the shift forks, and the on/off solenoids switch circuits as the computer sequences each gear change. When one of them drifts, the handoff between clutches gets mistimed, and the driver feels it as a slip, a bump, or a shudder.
Read the codes with a scan tool that can see the transmission module, not just the engine. A solenoid circuit code points at the solenoid, the internal wiring or the connector, so check resistance across each coil and look for green corrosion or a backed-out pin before condemning the part. Our walkthrough on testing a transmission solenoid with a multimeter covers the method, and an inexpensive digital multimeter is all you need for the coil check. If the codes are pressure or performance codes rather than circuit codes, a bidirectional tool such as the Autel MX808S lets you command individual solenoids and watch the result, which separates a sticking solenoid from worn clutches. Our transmission scan tool guide compares the options.
The listing covers the 2.4L Acura TLX from 2015 through 2020 and the 2.4L Acura ILX through 2020, automatic only. It does not fit the 3.5L V6 TLX, which uses a different nine-speed automatic, and it does not fit any manual car. The 8DCT reached the ILX for the 2016 model year, so if you have a 2015 ILX, confirm your transmission by VIN before ordering. On any car that has had transmission work, compare the number on your old solenoid assembly to 27000-RDS-305, or send us your year and VIN and we will confirm it for you. You can browse other transmission parts on our shop by transmission page.
These are remanufactured units, cleaned, inspected and calibrated, and may show light cosmetic marks on the housings. If the old fluid smells burnt or the pan holds a lot of friction debris, the clutches may already be damaged and solenoids alone will not cure the problem.
| OE Part Number | |
| Pieces | |
| Fits | |
| Condition | |
| Required Fluid | |
| Shipping Weight | |
| Package Dimensions |
No. The V6 TLX uses a nine-speed automatic with a completely different valve body. This set is for the 2.4L four-cylinder cars with the eight-speed dual clutch transmission only.
The listing includes the 2015 ILX 2.4L, but the dual clutch transmission arrived in the ILX for 2016. Check your 2015 by VIN, or send us the VIN and we will confirm before you order.
All of the solenoids have the same mileage in the same fluid. Replacing only the one that set a code often leads to a second teardown months later when the next one drifts out of range.
Use the genuine Acura transmission fluid listed in your owner's manual for the 8DCT. Do not use a universal fluid; it changes how the clutches grab and can cause harsh or slipping shifts.
Yes. Clear the stored codes and reset and relearn the transmission adaptive values with a scan tool that supports Acura transmission functions. Shift quality can feel off until the computer relearns clutch fill.
Check the fluid first. Burnt smell or heavy friction debris points to clutch damage. Clean fluid with circuit or pressure codes points to solenoids or wiring, which a coil resistance test and a bidirectional scan tool can confirm.
