When it comes to your car’s health, choosing the right service provider makes all the difference. Here at Hydro Flush, we offer three major automotive services that help your vehicle regain performance, reduce emissions, and achieve long-lasting reliability: Replacement Gearbox, Replacement EGR Valve, and Cleaning KAT.
Our mission is clear—deliver precision workmanship, exceptional reliability, and performance you can depend on.

Why Choose Hydro Flush for Your Vehicle?

With today’s vehicles being more technologically advanced than ever, maintenance demands expert handling. At Hydro Flush, we combine technical skill, modern diagnostics, and advanced cleaning technology to ensure every vehicle leaves our service centre in peak condition.

Our technicians are trained to identify problems quickly, offer transparent solutions, and carry out high-quality repairs to give you complete confidence on the road. Whether you’re dealing with a failing gearbox, an engine struggling with emissions, or a catalytic system in need of restoration, we’ve got you covered.

Professional Replacement Gearbox Service

Your gearbox is essential for smooth driving, efficient fuel use, and effective power distribution. When a gearbox begins to fail, you may notice noisy gear changes, slipping gears, unusual vibrations, or even complete mechanical failure. That’s where our Replacement Gearbox service comes in.

Signs You Need a Gearbox Replacement

• Difficulty changing gears

• Unusual noises, such as grinding or knocking

• Leaking transmission fluid

• Loss of acceleration

• Burning smell from the engine area

Ignoring gearbox issues can worsen the damage and increase repair costs. At Hydro Flush, we provide fast, accurate diagnostics and install top-quality replacement gearboxes that meet or exceed OEM standards.

What Makes Our Gearbox Service Different?

• Accurate diagnostics using modern equipment

• High-quality replacement gearbox units sourced from trusted manufacturers

• Installation by trained professional technicians

• Thorough testing and calibration for optimum performance

• Warranty on parts and labour for peace of mind

With every gearbox replacement, our goal is to deliver a smooth, reliable driving experience.

Replacement EGR Valve: Restoring Clean & Efficient Engine Performance

The EGR (Exhaust Gas Recirculation) valve reduces emissions and improves fuel efficiency. Over time, carbon deposits can cause the valve to stick, restricting airflow and disrupting engine performance. Our Replacement EGR Valve service ensures your engine runs cleaner and more efficiently.

Common Symptoms of a Failing EGR Valve

• Rough idling

• Reduced power and acceleration

• Poor fuel economy

• Check engine light illuminated

• Strong fuel odour

• Increased emissions

A faulty EGR valve affects far more than performance—it can also cause your vehicle to fail emissions tests. Hydro Flush provides professional inspection and replacement using high-quality EGR valves designed for long-term durability.

Why Choose Hydro Flush for EGR Valve Replacement?

• Precision diagnostics to identify the exact issue

• Manufacturer-approved replacement parts

• Installation by experienced technicians

• Cleaner combustion, improved fuel efficiency, and reduced emissions guaranteed

Replacing your EGR valve at the right time protects your engine and helps avoid costly repairs later on.

Cleaning KAT: Restoring Catalyst Efficiency & Reducing Emissions

The catalytic converter—often known as the “KAT”—plays a crucial role in reducing harmful emissions. Over time, carbon deposits and contaminants can clog the catalyst, leading to reduced engine performance and increased pollution. Hydro Flush offers professional Cleaning KAT services to restore your catalytic converter’s effectiveness.

Why Catalytic Converter Cleaning Matters

A dirty or clogged catalytic converter can result in:

• Reduced engine performance

• Poor fuel efficiency

• Increased emissions

• Failed MOT or emissions tests

• Unpleasant engine smells

• Potential engine misfires

Instead of opting for an expensive replacement, our Cleaning KAT service provides a cost-effective alternative that restores performance and prolongs the converter’s lifespan.

Our Cleaning KAT Process

• Initial diagnostics to assess the level of blockage

• Professional-grade chemical treatment to dissolve carbon deposits

• High-pressure cleaning for deep catalyst restoration

• Post-clean testing to ensure optimal emission performance

Our cleaning process is environmentally friendly, highly effective, and proven to rejuvenate catalytic converters without requiring costly replacements.

The Hydro Flush Difference

At Hydro Flush, we don’t just fix cars—we restore performance and reliability. Our dedication to quality has made us a trusted provider of replacement gearbox, replacement EGR valve, and cleaning KAT services.

Our Approach Includes:

• Transparent pricing

• Certified technicians

• High-quality replacement parts

• Quick turnaround times

• Customer-focused service

• Advanced cleaning and diagnostic technology

We ensure every customer receives professional care, clear explanations, and repairs designed to last.

When Should You Visit Hydro Flush?

Book an inspection if your car is showing reduced performance, increased fuel consumption, or unusual noises. Early detection not only saves money but also keeps your vehicle operating safely and efficiently.

Our services are ideal for vehicles experiencing:

• Loss of power

• Failed emissions tests

• Gearbox issues

• Frequent dashboard warning lights

• High-mileage engine fatigue

Hydro Flush is here to diagnose, repair, and restore your vehicle’s efficiency.

Frequently Asked Questions (FAQs)

1. How long does a gearbox replacement take at Hydro Flush?

Most gearbox replacements take between 4–8 hours, depending on the vehicle and the complexity of the issue. Some cases may take longer.

2. Can a clogged EGR valve be cleaned instead of replaced?

Sometimes, yes—but if the valve is heavily stuck or damaged, our Replacement EGR Valve service is the safest and most effective solution.

3. Is Cleaning KAT better than replacing the catalytic converter?

In most cases, yes. Cleaning KAT removes carbon build-up and restores performance without the cost of a new catalytic converter.

4. How often should I have my catalytic converter cleaned?

We recommend cleaning every 20,000–30,000 miles, depending on driving habits and vehicle condition.

5. Do you offer warranty on your services?

Yes, Hydro Flush provides warranties on both parts and labour for all major services.

Ready to Reinstate Your Vehicle’s Performance?

Hydro Flush is your trusted partner for replacement gearbox, replacement EGR valve, and cleaning KAT services. We’re committed to delivering exceptional quality, reliable repairs, and a smoother, more efficient driving experience.