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Parts for your 2011 Toyota Mark x-Radiator

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Nulon Engine Oil Stop Leak 300ml - ESL
30%OFF

Nulon Engine Oil Stop Leak 300ml - ESL

$27.30
$39
Fitment Notes:
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Nulon Radiator Stop Leak 300mL - R50
30%OFF

Nulon Radiator Stop Leak 300mL - R50

$14.70
$21
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Explore 4WD & Adventure

Nulon Diesel Injector Cleaner 300mL - DIC
30%OFF

Nulon Diesel Injector Cleaner 300mL - DIC

$23.80
$34
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Nulon Octane Boost & Clean 300ml - OBC
30%OFF

Nulon Octane Boost & Clean 300ml - OBC

$28.70
$41
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Penrite Radiator Flush Additive 375mL - ADRF375

Penrite Radiator Flush Additive 375mL - ADRF375

$27
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Penrite Shift Eze 125ml - SHIFTEZE000125

Penrite Shift Eze 125ml - SHIFTEZE000125

$29
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Repco Cooling System Flush 300ml

Repco Cooling System Flush 300ml

$16
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K-SEAL Ultimate Head Gasket Repair - K3501

K-SEAL Ultimate Head Gasket Repair - K3501

$102
Fitment Notes:
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Lucas Heavy Duty Oil Stabilizer 946ml - 10001

Lucas Heavy Duty Oil Stabilizer 946ml - 10001

$40
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Penrite Radiator Stop Leak 375mL - ADRSL375

Penrite Radiator Stop Leak 375mL - ADRSL375

$30
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Repco Radiator Fin Straightener & Cleaner - RST18

Repco Radiator Fin Straightener & Cleaner - RST18

$20
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Penrite Lifter and Tappet Fix 375ml - ADLTF375

Penrite Lifter and Tappet Fix 375ml - ADLTF375

$31
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Rislone Rear Main Seal Repair 500ml - 44240

Rislone Rear Main Seal Repair 500ml - 44240

$38
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Nulon Gearbox Treatment 125ml - G70
Clearance

Nulon Gearbox Treatment 125ml - G70

$6
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Rislone Radiator Stop Leak 325mL - 41196

Rislone Radiator Stop Leak 325mL - 41196

$20
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One Shot Radiator Stop Leak - 20050

One Shot Radiator Stop Leak - 20050

$9
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Nulon Radiator Flush & Clean 300mL - R40
Clearance

Nulon Radiator Flush & Clean 300mL - R40

$18
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GV Demineralised Water 2L - DEMIN-02L

GV Demineralised Water 2L - DEMIN-02L

$6
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Rislone Aluminium Radiator Stop Leak 479g - 41186

Rislone Aluminium Radiator Stop Leak 479g - 41186

$32
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Sealwell Coolant System Conditioner 2 Pack - T51012

Sealwell Coolant System Conditioner 2 Pack - T51012

$27
Fitment Notes:
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GV Demineralised Water 5L - DEMIN-05L

GV Demineralised Water 5L - DEMIN-05L

$12
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Showing 1 - 39 of 113 products

2011 Toyota Mark X Radiator — What it does, and how to look after it

A radiator is absolutely used on the 2011 Toyota Mark X. Technical references including the Toyota Electronic Parts Catalogue (EPC) for the GRX13# series and the 4GR-FSE/2GR-FSE engine repair manuals list a crossflow aluminium radiator with plastic end tanks, with an integrated automatic-transmission fluid (ATF) cooler on auto models. These sources confirm the Mark X runs a conventional liquid-cooled system, so the radiator is a key component of the car’s thermal management.

In day-to-day driving, the radiator’s job is to shed heat from the coolant coming out of the V6, keeping temperatures in the sweet spot for power and longevity. It works with the thermostat, water pump, cooling fans and pressure cap to maintain consistent operating temperature, whether it’s cruising the motorway or slogging through stop–start city traffic under the summer sun.

For owners thinking about servicing or replacement, the big wins are pretty straightforward. Toyota specifies Super Long Life Coolant (SLLC, pink). On these models, the initial coolant service interval is commonly up to 160,000 km or 10 years, then every 80,000 km or 5 years thereafter, but always follow the vehicle handbook for your exact variant. When replacing coolant, use distilled water if mixing concentrate, bleed air properly, and verify heater performance to ensure no airlocks.

  • Inspect under the bonnet for dried pink residue, dampness around end tanks, and staining at hose joints.
  • Check the radiator cap (typically ~1.1 bar) and replace if the seal looks tired or if pressure testing fails.
  • Clean debris from the fins, don’t bend them—use low-pressure water and a soft brush.
  • Replace spongy or cracked hoses and suspect clamps, consider new hoses with a radiator swap.
  • On automatic models, inspect the in-tank ATF cooler area for cross-contamination risk, any “strawberry milkshake” look demands immediate attention.

When it’s time to replace the radiator, choose a quality unit matched to the GRX130/133 Mark X and your engine (4GR-FSE 2.5L or 2GR-FSE 3.5L), with or without the integrated ATF cooler as required. Fresh coolant, a new cap, and new upper/lower hoses make the job more robust. Most competent workshops can handle the swap in a couple of hours, including bleeding and fan operation checks. Refer to Toyota workshop literature or a qualified technician for torque specs, fan shroud handling and bleed procedures. These practices, drawn from Toyota repair manuals and the EPC, keep the Mark X cool, reliable and happy across Aussie and Kiwi conditions.

What coolant does a 2011 Toyota Mark X use, and how much does it take?

The Mark X uses Toyota Super Long Life Coolant (SLLC, pink). It’s typically supplied pre-mixed and is safe for the alloy radiator and engine internals. Stick with the correct spec to protect against corrosion and electrolysis.

Capacity varies by engine: the 4GR-FSE (2.5L) is roughly in the mid–high 8-litre range, while the 2GR-FSE (3.5L) is closer to 9–10 litres. Always confirm against your owner’s manual or workshop data for your exact trim and transmission.

How often should the 2011 Mark X radiator be serviced or replaced?

Coolant service intervals are typically up to 160,000 km or 10 years initially, then every 80,000 km or 5 years, provided Toyota SLLC is used. Inspect the radiator, cap, hoses and clamps at each service, and clean the fins if they’re clogged with bugs or seeds.

There’s no fixed replacement age for the radiator itself—replace it when there’s leakage, distorted or brittle plastic tanks, blocked cores, overheating under load, or if you’re proactively refreshing a high-kilometre cooling system.

What are common signs the Mark X radiator is failing?

Watch for creeping temperatures, coolant loss, the low coolant light, sweet smells, or pink/white residue around end tanks and hose necks. A swelling top tank or cracks near the crimp seals are classic aging signs on plastic-tank units.

Discoloured coolant, sludge, or poor heater performance can also hint at internal restriction. On autos, any milky contamination suggests ATF and coolant mixing—stop driving and get it checked immediately.