Steering Rack Buying Guide
Last updated: 24 April 2026
The steering rack converts the rotational movement of the steering wheel into the linear motion that turns the front wheels. Hydraulic racks use power steering fluid, while modern EPS (Electric Power Steering) racks use an electric motor. Leaks, play, and knocking are common symptoms of steering rack wear. At CarParts247 we stock steering racks from TRW, ZF, and Lemförder.
Hydraulic vs electric power steering racks
Hydraulic racks rely on a belt-driven pump and pressurised fluid. EPS racks use an electric motor mounted on the rack or steering column, eliminating the need for fluid and reducing parasitic engine load.
- Hydraulic: fluid leaks are the most common failure — check for wet patches under the car
- EPS: motor or ECU failure causes sudden loss of assistance — check for warning lights
- Hydraulic racks require regular fluid checks and changes
- EPS racks are lighter and more fuel-efficient but costlier to replace
Replacement and alignment
Steering rack replacement always requires a four-wheel alignment afterwards. Remanufactured racks from quality suppliers are a cost-effective alternative to new units.
- Always get a four-wheel alignment after replacing the steering rack
- Transfer the tie rod ends from the old rack if the new rack doesn't include them
- Flush the power steering system when replacing a hydraulic rack
- Remanufactured racks are rebuilt with new seals and tested to OE pressure specifications
- EPS racks may need ECU calibration after fitting — check with a diagnostic tool
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Hydraulic and electric steering racks — leak diagnosis, remanufactured options, and alignment after replacement.
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Frequently Asked Questions
How do I know if my steering rack is worn?
Common signs include play or looseness in the steering, clunking noise when turning, uneven tyre wear, and power steering fluid leaks. A mechanic can check for excessive internal play.
Can a steering rack be repaired?
Hydraulic racks can often be resealed or remanufactured. EPS racks with motor or ECU faults usually require complete replacement. The cost difference between repair and remanufactured exchange is often small.
Do I need an alignment after replacing the steering rack?
Yes, always. The steering geometry changes when the rack is removed. Driving without alignment causes rapid and uneven tyre wear and poor handling.
How much does steering rack replacement cost?
The price of a steering rack depends on your exact vehicle and the brand you choose. Enter your registration above to see parts confirmed to fit, then compare prices from the brands we stock on this page. Free UK delivery on orders over £99.
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