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Karcher Steering Head Cylinder Head Aluminium for High Pressure Washer (9.002-525.0)

SKU 9.002-525.0
BARCODE 4054278472232
By: Karcher
Original price $249.00 - Original price $249.00
Original price
$249.00
$249.00 - $249.00
Current price $249.00
Availability: This product will be delivered in 3-5 business days

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Delivery Notice:

Please allow 3-5 business days for processing before it's ready for delivery or pickup. All standard delivery options still apply.

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Karcher Steering Head Cylinder (Aluminium) – Pressure Washer Part (9.002-525.0)

Ensure your high-pressure cleaning equipment operates at absolute peak performance with the Karcher Steering Head Cylinder (9.002-525.0). Manufactured from robust, high-quality aluminium, this genuine OEM replacement part is a critical structural and functional component within your pressure washer's internal pump assembly. Acting as the foundational housing that manages water flow and pressure generation, this aluminium cylinder head is engineered to withstand the extreme hydraulic forces and rapid temperature fluctuations associated with heavy-duty commercial and domestic cleaning tasks.

Over time, continuous exposure to highly pressurized water, mineral buildup, and winter frost can cause inferior plastic or worn metal cylinder heads to develop hairline cracks or internal warping. This leads to severe pressure loss, internal leaking, and constant motor pulsing. By upgrading or replacing your damaged component with this genuine Karcher pressure washer spare part, you guarantee perfect internal pump alignment and restore optimal pressure stability. Designed for precise fitment, this heavy-duty pump cylinder head ensures your machine continues to deliver unrelenting cleaning power for years to come.

Who Is This Aluminium Cylinder Head Ideal For?

This premium aluminium replacement part restores maximum pressure and internal pump integrity. It is highly recommended for:

  • Appliance Repair Technicians: Sourcing highly reliable, exact-fit genuine Karcher parts to professionally rebuild and service clients' pressure washer pumps.
  • DIY Homeowners: Repairing their own pressure washers that have lost suction or begun leaking due to a cracked or frost-damaged original cylinder head.
  • Commercial Exterior Cleaners: Upgrading or repairing their heavy-duty Karcher machines to ensure they can withstand the brutal daily demands of commercial use.
  • Agricultural Workers: Maintaining robust cleaning equipment necessary for washing down heavy farm machinery and muddy tractors.

Key Features and Performance Benefits:

  • Genuine OEM Precision: Manufactured directly by Karcher (Part No. 9.002-525.0) to ensure a flawless, watertight fit within your specific pump assembly.
  • High-Quality Aluminium Build: Vastly superior to plastic alternatives, the aluminium construction prevents warping and cracking under extreme hydraulic pressure.
  • Restores Pressure Stability: Fixes internal leaks and pressure drops, ensuring your machine delivers consistent, high-powered water flow to the lance.
  • Maintains Pump Alignment: Acts as the rigid structural core of the pump, keeping the pistons and valves perfectly aligned during high-speed operation.
  • Highly Resistant to Frost: While all pumps should be drained in winter, the aluminium housing is significantly more resilient to expansion damage than plastic components.

Technical Specifications:

  • Brand: Karcher (Genuine Replacement Part)
  • Product Type: Steering Head / Cylinder Head
  • Part Number: 9.002-525.0
  • Material Construction: High-Grade Aluminium
  • Compatibility: Specific Karcher High-Pressure Washers (Check your machine's parts diagram for exact model fitment)
  • Function: Structural pressure housing for internal pump valves and pistons

Rebuild your pump with genuine Karcher durability. Available for nationwide delivery.

Dispatch: Items marked as “In stock” or “Ready to be shipped” are usually dispatched within 1 business day after payment is received. If an item is not in stock and ordered from our supplier, please allow 3–5 business days for processing before it is ready for delivery or pickup. All standard delivery options still apply.

Shipping: Delivery costs are calculated at checkout based on your location and order size. Bulky items and chemicals may attract additional freight charges and cannot be sent to PO Boxes.

Delivery: Parcels are delivered by road freight. Authority to leave may be used if no one is available to receive the order. For full details, please see our Shipping & Delivery Policy

Business days to delivery

NSW
City 1 Day
VIC
Melbourne 1 Day
Regional 3–4 Days
QUEENSLAND
Brisbane 1–2 Days
Regional 3–4 Days
SOUTH AUSTRALIA
Adelaide 2–3 Days
Regional 4–5 Days
NORTHERN TERRITORY
All Areas 4–6 Days
WESTERN AUSTRALIA
All Areas 4–6 Days
TASMANIA
All Areas 4–6 Days
What does the steering head cylinder actually do?

The cylinder head is the heavy metal block at the front of your pressure washer's pump. It houses the high-pressure valves and water seals, and it guides the pistons as they rapidly compress the water to generate the high pressure that exits your wand.

Why is an aluminium cylinder head better than a plastic one?

Aluminium is vastly stronger and more heat-resistant than plastic. It can easily withstand the intense, continuous hydraulic pressure and heat generated by the pistons without warping, cracking, or blowing out over time.

How do I know if my cylinder head needs replacing?

Common signs of a cracked or damaged cylinder head include water visibly leaking from the main pump housing, a severe loss of pressure at the nozzle, or the machine constantly 'pulsing' on and off when you are not pulling the trigger.

Does this part come with new valves and seals installed?

This listing (Part 9.002-525.0) is typically for the bare aluminium cylinder head block itself. You will need to carefully transfer your existing valves and rubber O-rings into this new block, or purchase a new valve kit separately.

Will this fit my specific Karcher K3 or K4 machine?

Karcher uses many different cylinder heads across their range depending on the year of manufacture. You must check your specific machine's parts diagram or match the part number 9.002-525.0 to guarantee fitment.

What causes a cylinder head to crack in the first place?

The most common cause of a cracked cylinder head is frost damage. If water is left inside the pump during freezing winter temperatures, the ice expands and easily cracks the metal. Running the pump dry without water can also cause extreme heat warping.

Can I repair a cracked aluminium head with epoxy or welding?

No. The internal water pressure frequently exceeds 1800 PSI. No epoxy will hold that pressure, and welding can warp the precision-machined internal valve seats. A cracked head must be completely replaced.

Do I need special tools to replace this?

Replacing a cylinder head requires basic mechanical skills. You will need Torx (star) screwdrivers or Allen keys to dismantle the pump casing, and you must be very careful not to pinch or tear the rubber O-rings during reassembly.

Why does my machine pulse after I installed the new head?

If the machine still pulses, you likely have a damaged internal O-ring, a piece of dirt stuck in one of the high-pressure valves, or an issue with the unloader valve. Ensure all transferred parts are perfectly clean and seated correctly.

Is this a genuine Karcher part?

Yes, this is a 100% genuine OEM Karcher spare part, guaranteeing precise internal machining for your valves and pistons.

Should I lubricate the O-rings when installing this?

Yes, it is highly recommended to lightly coat all rubber O-rings and water seals with a specialized silicone grease (not petroleum jelly) before inserting them into the new aluminium head to ensure a perfect, watertight seal.

Do you supply spare parts to appliance repair businesses?

Yes, Freshway Supplies provides competitive trade pricing for appliance repair technicians and small engine mechanics. Contact us to establish your trade account for spare parts.

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