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![STEERING BOOST KIT [JL/JT-COMPATIBLE]](https://shackle4x4.com/124098-large_default/x02-04-001-apex-steering-boos-kit.jpg "STEERING BOOST KIT [JL/JT-COMPATIBLE]")
The APEX Steering Boost Kit retunes the factory power steering pump blow-off valve on the Jeep JL and JT and raises the working pressure — with no pump replacement. The manufacturer requires it to run with a cooler, and in this version you buy one separately. Fitting means taking the pump out of the vehicle and setting the pressure on a gauge, so plan it as workshop work.
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On bigger tyres and with a heavier front end, the electric steering in the JL gives up exactly when it is needed most: in the rocks, and manoeuvring in a car park on a hot day.
The Boost Kit does not replace the pump — it retunes the factory blow-off valve, raising working pressure and, the manufacturer states, steering force by 40%.
EFFECT +40% steering assistance | PRESSURE 2000 PSI recommended, 2300 PSI max | VERSION Without cooler — buy separately |
The effects the manufacturer lists:
For Jeep JL and JT owners on larger tyres who want more force at the wheel without replacing the pump.
1. The pressure limit. The factory setting is about 1300 PSI. The recommended 2000 PSI is described as the best compromise between output and reliability, and 2300 PSI is the maximum allowable, not to be exceeded: going past it leads to pump or steering gear failure. The green zone on the supplied gauge is safe, the yellow one can shorten pump life.
2. The cooler is mandatory. Without one the system overheats, and that means a failed pump or steering gear. Only the APEX cooler has been tested with the boost valve — other types may not cool enough, and this version comes without a cooler.
3. Temperature checks. After hard use, check the oil temperature periodically. Do not exceed 300 °F (about 150 °C).
4. Systems already overheated. A system previously overheated or run in extreme conditions will most likely fail at the raised pressure. APEX accepts no liability for the factory power assist system — hoses, pump or steering gear.
5. The oil. The system must run a high-grade pure synthetic fluid. ATF is prohibited. The named oils: MOPAR 68088485AB, PENTOSIN CHF 11S, REDLINE 30404.
This is not a job done in place. The pump MUST be removed from the vehicle, and the valve port must face up throughout removal and installation — otherwise the spool valve falls out, most likely gets lost, and a new pump is needed. The instructions are written for the 3.6 and 2.0 turbo engines, where the steering system is identical; on the diesel and the 392 the strip-down may differ, and APEX then refers to the MOPAR pump removal procedure.
Before fitting, back the pressure set screw all the way out against the snap ring. If it is left screwed in, the pressure climbs before you even set it and damages the pump. The boost valve itself goes in with a 15 mm spanner at 6 ft-lbs — take care not to drop anything into the pump.
Setting the pressure is a two-person job: one turns the steering lock to lock, the other watches the gauge and adjusts. The rule is never more than a quarter turn at a time. Once it is set, the gauge and the sandwich plate come off and the factory high pressure line goes back directly to the pump.
Will the kit remove steering play?
No — play caused by problems with the aluminium steering box is not something this kit fixes.
Will it work on 40" tyres?
Up to 39" — yes, in most cases. At 40" the resistance shows up at reduced tyre pressure and on high traction surfaces.
Does it fit the diesel and the 392?
Yes — the engine list covers the 2.0L, 3.6L, 392 and diesel. On the diesel and the 392 the pump strip-down is different and you have to work to the MOPAR procedure.
We also fit the kit, pressure setting included, in our own workshop — get in touch if you would like to book a slot.
Accessories
YES, please contact us to arrange time when to do it.
Tel: +48 534 600 534 (please select option 3)
Email: info@szekla4x4.pl
Accesories
The APEX Steering Boost Kit retunes the factory power steering pump blow-off valve on the Jeep JL and JT and raises the working pressure — with no pump replacement. The manufacturer requires it to run with a cooler, and in this version you buy one separately. Fitting means taking the pump out of the vehicle and setting the pressure on a gauge, so plan it as workshop work.