5HP24 Solenoid Kit 1997-2002, remanufactured and ready to install. Fits the 5HP24. Ships fast from the USA.
Jaguar XK8 owners with a 1997-2002 4.0L car often come looking for solenoids after the gearbox starts thumping into second, hanging in one gear with a gearbox fault message, or shuddering at a steady cruise. Behind the AJ-V8 in these cars is the ZF 5HP24 five-speed, and this remanufactured kit supplies all eight of its valve body solenoids so the shift control can be restored in one sitting rather than piece by piece.
In the XK8 the transmission control module decides when to shift and how firmly, but the 5HP24's solenoids carry out every command. Switching solenoids route oil to stroke the shift valves, while variable pressure solenoids trim the feed to each clutch so the shift lands smoothly. The converter lockup clutch has its own control as well. In the photo you can see four slim switching units with black connectors, one larger regulator with a green connector and sealing rings, and three regulators with polished aluminum bodies. Coupes and convertibles that sat for long periods or ran old fluid tend to develop sticky regulators and tired coils, and the shift quality fades with them.
Read the gearbox module with a tool that supports Jaguar, then check the solenoids themselves. Our guide to bench testing transmission solenoids shows how to confirm a solenoid moves oil, not just that its coil has resistance. If the main complaint is a shake at cruise, work through our converter clutch shudder diagnosis first, since fluid condition and the converter itself can cause the same feel. When the solenoids test good but shifts stay harsh, TransGo traces runaway line pressure and kickdown bang on the 5HP24 to the pressure regulator valve, and a pressure gauge check from our line pressure guide will show it. A worn valve bore means the fix is a complete 5HP24 valve body.
This set is listed for the Jaguar XK8 with the 4.0L V8 from 1997 through 2002. Published ZF application lists show the same 5HP24 in the 1998-2002 XJ8 4.0, but the later XK8 with the 4.2L engine moved to the six-speed 6HP26, so a 4.2 car needs a different part. The kit cross-references to interchange number 13200B. Before ordering, match your old solenoids and plug colors to the photo, or send us your year and VIN. Other 5HP24 solenoid kits listed in our store are titled for different makes and years.
Raise the car level, drain the pan and remove it with the filter, then lower the valve body carefully so the solenoids and harness come with it. Record the position of each part; the switching and regulating solenoids are not interchangeable between bores. Fit new O-rings lubricated with fresh fluid, inspect the case connector and internal harness for heat damage, and torque the valve body bolts evenly. Even on a gearbox that was never serviced from new, the fluid ages, so refill with the correct fluid and check the level hot through the fill plug; ZF lists LifeguardFluid 5 for the 5HP family. Clear adaptations and road test through every gear. If the old fluid shows heat damage, read our overheating causes guide, and consider adding a 5HP24 shift kit while the valve body is out.
| Fits | 5HP24 1997-2002 |
| Part type | Solenoid Kit |
| Condition | Remanufactured |
| Brand | OEM |
| Ships | From the USA |
| Warranty | 1-year |
No. The 4.2L XK8 uses the six-speed 6HP26. This 5HP24 kit is listed for the 1997-2002 XK8 4.0L.
The 1998-2002 XJ8 4.0 also used the 5HP24, but this listing is titled for the XK8. Send us your year and VIN and we will confirm fitment before you order.
Eight remanufactured solenoids as pictured, covering the switching solenoids and the pressure-regulating solenoids on the 5HP24 valve body.
Fluid still breaks down with heat and age. After a solenoid job, refill with the correct fluid and check the level hot through the fill plug rather than reusing old oil.
Yes. Clear the gearbox adaptive values with a scan tool that supports Jaguar and drive through all gears so the module relearns shift timing.
