What are the signs of Radiator Hose deterioration and how should Radiator Hoses be inspected and replaced on Mitsubishi Diamante?

Age hardening in hose causes the cracks and excessively tightening hose clamps may cause separation and tearing. A hose is soft, swollen and may be bursting, it needs replacement. Hoses may deteriorate internally if the cooling system is not regularly flushed. The upper and lower radiator hoses, and the heater hose should be examined at the least frequency of 30,000 miles, and also during early spring and at the beginning of the fall or winter. The engine and cooling system should be kept cold and during inspection, any cracking, rotting or collapse of the system should be noted and any weak or swollen areas replaced. When removing a hose, it is important to remove the radiator pressure cap first to prevent burns caused by hot coolant or steam. Place a clean container below the radiator or engine drain, open drain and then run the system accordingly making sure to place a close-top container to avoid damaging pets with ethylene glycol. Relax the hose clamps at each end of the hose and twist, pull and slide the hose off the fitting without damaging the connection. In case the hose is stuck, it can be carefully cut off with a razor blade, ensuring that the connection is not damaged. Clean the mounting connections, and check the clamps in case they need to be replaced. To install, wet the ends of the new hose in clean coolant, slip the clamps over the hose and then connect it to the connections, making sure that the clamps do not go more than 1/4 inch in any direction. Close the drains and add the coolant drained plus an appropriate mix to the cooling system. Lastly, inspect leaks with a pressure tester or by warming up the engine to normal operating temperature, taking care not to touch the hot or moving components when inspecting the fittings.

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152 Radiator Hoses found

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Mitsubishi Water Outlet Part Number: 1305A152
$44.08 MSRP: $61.22
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Product Specifications
- Other Name: Fitting, Cooling Water O; Coolant Reservoir Hose; Radiator Hose; Water Hose; Outlet Tube
Fits the following Mitsubishi Models:
- Lancer | 2008-2015 | Evolution GSR, Evolution MR, Evolution MR Touring, Evolution SE, Ralliart, Ralliart Sportback, SE | 4 Cyl 2.0 L GAS, 4 Cyl 2.4 L GAS
- Outlander PHEV | 2018-2022 | GT, LE, SEL | 4 Cyl 2.0 L PLUG-IN HYBRID EV-GAS (PHEV), 4 Cyl 2.4 L PLUG-IN HYBRID EV-GAS (PHEV)
- Outlander Sport | 2014-2025 | BE, ES, GT, GT Special Edition, LE, Ralliart, S, SE, SE Special Edition, SEL, SP, Trail Edition | 4 Cyl 2.0 L GAS, 4 Cyl 2.4 L GAS
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Mitsubishi Upper Hose Part Number: 1370A665
$44.70 MSRP: $62.08
You Save: $17.38 (28%)
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Product Specifications
- Other Name: Hose, Radiator, Upper; Coolant Reservoir Hose; Radiator Hose; Cooling Hose; Water Hose
Fits the following Mitsubishi Models:
- Outlander PHEV | 2018-2022 | GT, LE, SEL | 4 Cyl 2.0 L PLUG-IN HYBRID EV-GAS (PHEV), 4 Cyl 2.4 L PLUG-IN HYBRID EV-GAS (PHEV)
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Mitsubishi Upper Hose Part Number: 1370A137
$45.24 MSRP: $62.83
You Save: $17.59 (28%)
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Product Specifications
- Other Name: Upper Left Radiator Hose, Coolant Reservoir Hose, Radiator/Coolant/Water Hose; Hose
Fits the following Mitsubishi Models:
- Outlander | 2008-2013 | ES, SE | 4 Cyl 2.4 L GAS
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Mitsubishi Lower Hose Part Number: MN135593
$45.36 MSRP: $63.00
You Save: $17.64 (28%)
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Product Specifications
- Other Name: Lower Radiator Hose, Coolant Reservoir Hose, Radiator Coolant Hose, Cooling Hose, Water Hose
Fits the following Mitsubishi Models:
- Lancer | 2003-2005 | Evolution, Evolution MR, Evolution RS | 4 Cyl 2.0 L GAS
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Mitsubishi Lower Hose Part Number: 1370B102
$47.10 MSRP: $65.42
You Save: $18.32 (28%)
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Product Specifications
- Other Name: Lower Radiator Hose, Coolant Reservoir Hose, Radiator/Coolant/Water Hose, Cooling Hose
Fits the following Mitsubishi Models:
- Lancer | 2014-2017 | ES, ES Sportback, GT, GT Sportback, SE, SEL | 4 Cyl 2.0 L GAS, 4 Cyl 2.4 L GAS
- Outlander Sport | 2015-2025 | BE, ES, GT, GT Special Edition, LE, Ralliart, S, SE, SE Special Edition, SEL, SP, Trail Edition | 4 Cyl 2.0 L GAS, 4 Cyl 2.4 L GAS
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Mitsubishi Return Hose Part Number: 1370A878
$47.24 MSRP: $65.62
You Save: $18.38 (29%)
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Product Specifications
- Other Name: Upper Radiator Hose, Coolant Reservoir Hose, Radiator/Coolant/Water Hose; Upper Hose
Fits the following Mitsubishi Models:
- Outlander | 2014-2020 | ES, LE, SE, SEL, SP | 4 Cyl 2.4 L GAS
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Mitsubishi Hose Assembly Part Number: 1375A403
$48.40 MSRP: $67.22
You Save: $18.82 (28%)
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Product Specifications
- Other Name: Hose, Radiator Condenser; Radiator Hose; Cooling Hose; Water Hose
Fits the following Mitsubishi Models:
- Eclipse Cross | 2018-2020 | ES, LE, SE, SEL, SP | 4 Cyl 1.5 L GAS
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Mitsubishi Upper Hose Part Number: 1370A499
$51.37 MSRP: $71.35
You Save: $19.98 (28%)
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Product Specifications
- Other Name: Upper Radiator Hose, Coolant Reservoir & Radiator Hose, Cooling/Water Hose
Fits the following Mitsubishi Models:
- Outlander | 2014-2020 | GT | 6 Cyl 3.0 L GAS
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Mitsubishi Upper Hose Part Number: 1370B224
$52.85 MSRP: $73.40
You Save: $20.55 (28%)
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Product Specifications
- Other Name: Hose, Radiator, Upper; Coolant Reservoir Hose; Radiator Hose; Cooling Hose; Water Hose
Fits the following Mitsubishi Models:
- Eclipse Cross | 2022-2024, 2018-2020 | ES, LE, SE, SE Special Edition, SEL, SEL Special Edition, SEL Touring, SP | 4 Cyl 1.5 L GAS
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Mitsubishi Lower Hose Part Number: 1370B104
$54.01 MSRP: $75.02
You Save: $21.01 (29%)
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Product Specifications
- Other Name: Lower Radiator Hose, Coolant Reservoir Hose, Radiator Coolant Hose, Cooling/Water Hose
Fits the following Mitsubishi Models:
- Lancer | 2014-2017 | ES, ES Sportback, GT, GT Sportback, SE, SEL | 4 Cyl 2.0 L GAS, 4 Cyl 2.4 L GAS
- Outlander Sport | 2015-2025 | BE, ES, GT, GT Special Edition, LE, Ralliart, S, SE, SE Special Edition, SEL, SP, Trail Edition | 4 Cyl 2.0 L GAS, 4 Cyl 2.4 L GAS
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Mitsubishi Water Outlet Part Number: MN163997
$54.48 MSRP: $75.67
You Save: $21.19 (28%)
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Product Specifications
- Other Name: Fitting, Cooling Water O; Coolant Reservoir Hose; Radiator Hose; Water Hose
Fits the following Mitsubishi Models:
- Eclipse | 2006-2012 | GS, GS Sport, SE, Spyder GS, Spyder GS Sport, Spyder SE | 4 Cyl 2.4 L GAS
- Galant | 2004-2012 | DE, ES, FE, SE, Sport Edition | 4 Cyl 2.4 L GAS
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Mitsubishi Lower Hose Part Number: 1370A194
$54.77 MSRP: $76.07
You Save: $21.30 (28%)
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Product Specifications
- Other Name: Lower Radiator Hose, Coolant Reservoir Hose, Radiator/Coolant/Water Hose, Cooling Hose
Fits the following Mitsubishi Models:
- Lancer | 2008-2017 | DE, ES, ES Sportback, GT, GT Sportback, GTS, GTS Sportback, Ralliart, Ralliart Sportback, SE, SEL | 4 Cyl 2.0 L GAS, 4 Cyl 2.4 L GAS
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Mitsubishi Water Outlet Part Number: MN183101
$55.14 MSRP: $76.58
You Save: $21.44 (28%)
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Product Specifications
- Other Name: Fitting, Cooling Water O; Coolant Reservoir Hose; Radiator Hose; Water Hose
Fits the following Mitsubishi Models:
- Eclipse | 2006-2012 | GS, GS Sport, SE, Spyder GS, Spyder GS Sport, Spyder SE | 4 Cyl 2.4 L GAS
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Mitsubishi Lower Hose Part Number: 1370A742
$56.04 MSRP: $77.83
You Save: $21.79 (28%)
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Product Specifications
- Other Name: Hose, Radiator, Lower; Coolant Reservoir Hose; Radiator Hose; Cooling Hose; Water Hose
Fits the following Mitsubishi Models:
- Lancer | 2012-2014 | DE, ES, ES Sportback, GT, GT Sportback, SE | 4 Cyl 2.0 L GAS, 4 Cyl 2.4 L GAS
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Mitsubishi Water Pump Tube Part Number: 1310A058
$56.83 MSRP: $78.93
You Save: $22.10 (28%)
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Product Specifications
- Other Name: Pipe, Water Pump Inlet; Radiator Hose; Water Hose; Inlet Tube
Fits the following Mitsubishi Models:
- Outlander | 2008-2013 | ES, SE | 4 Cyl 2.4 L GAS
- Outlander Sport | 2011-2013 | ES, LE, SE | 4 Cyl 2.0 L GAS
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Mitsubishi Cooler Line Part Number: MR968541
$59.44 MSRP: $82.55
You Save: $23.11 (28%)
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Product Specifications
- Other Name: Hose Kit, Automatic Transmission Cooler; Coolant Reservoir Hose; Radiator Hose; Cooling Hose; Water Hose
Fits the following Mitsubishi Models:
- Galant | 2000-2003 | DE, ES, LS | 4 Cyl 2.4 L GAS
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Mitsubishi Reservoir Hose Part Number: 1375A676
$67.54 MSRP: $93.80
You Save: $26.26 (28%)
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Product Specifications
- Other Name: Hose, Radiator Condenser; Radiator Hose; Cooling Hose; Water Hose
Fits the following Mitsubishi Models:
- Outlander | 2022-2025 | Black Edition, ES, SE, SE Launch Edition, SEL, SEL Launch Edition | 4 Cyl 2.5 L GAS
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Mitsubishi Coolant Hose Part Number: 1370A886
$69.55 MSRP: $96.60
You Save: $27.05 (28%)
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Product Specifications
- Other Name: Lower Radiator Hose; Coolant Reservoir & Radiator Hose; Oil Cooler Hose; Cooling & Water Hose; Lower Hose
Fits the following Mitsubishi Models:
- Outlander | 2014-2015 | ES, SE | 4 Cyl 2.4 L GAS
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Mitsubishi Inlet Pipe Part Number: MD198102
$72.35 MSRP: $100.49
You Save: $28.14 (28%)
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Product Specifications
- Other Name: Pipe, Water Pump Inlet; Radiator Hose; Water Hose
Fits the following Mitsubishi Models:
- Eclipse | 2000-2005 | GT, GTS, Spyder GT, Spyder GTS | 6 Cyl 3.0 L GAS
- Galant | 1999-2003 | ES, GTZ, LS | 6 Cyl 3.0 L GAS
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Mitsubishi Overflow Hose Part Number: 1375A674
$72.37 MSRP: $100.52
You Save: $28.15 (28%)
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Product Specifications
- Other Name: Hose, Radiator Condenser; Coolant Reservoir Hose; Radiator Hose; Cooling Hose; Water Hose
Fits the following Mitsubishi Models:
- Outlander | 2022-2025 | Black Edition, ES, SE, SE Launch Edition, SEL, SEL Launch Edition | 4 Cyl 2.5 L GAS

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Mitsubishi Radiator Hose

Mitsubishi Radiator Hose ensures that engine temperatures remain constant as it bends with the engine movements and directs the coolant to the cooling system to provide the driver with peace of mind when making daily journeys. Still a mobility innovator, Mitsubishi was started as a shipping company in 1870 and introduced the first production car in Japan in 1917 and has been pursuing practical technology since. Its current models have fuel-efficient MIVEC engines, Super All Wheel Control that hangs onto slippy roads, and easy-to-use cruise control with smartphone connectivity, all designed to make driving easy, secure, and entertaining. Plug-in hybrids such as the Outlander PHEV display an interest in cleaner power, and further studies into fuel cells and city EV pilot projects are a preview of the next generation of smart features. In sedans, crossovers, and SUVs, Mitsubishi is concentrating on performance and reliability in construction and ownership to ensure that families and hobbyists both can rely on every road trip. Similarly to the vehicles that have a philosophy of reliability, the cooling hardware is a reflection of that philosophy. The Radiator Hose is a flexible hose that forms the coolant highway inside the engine block, heater core, and radiator, which closes even when the powertrain is rocking on its mounts. The water pump discharges coolant in the lower section and circulates through the upper loop that contains the engine in its optimum temperature range. Frequent visual inspection early detects swelling or cracks, and early replacement ensures the Radiator Hose is always ready to avoid leakage, deter overheating, and maintain a smooth running performance mile after mile.

Pick genuine OEM Radiator Hose if you want superb performance and durability that lasts. Mitsubishi builds that using high-grade materials and official factory techniques to meet very strict standards. This means you get parts you can actually trust for your daily drive. Finding the right parts is simple in the massive stock of genuine inventory. You can stop guessing if a part will fit or hold up. You will love the low prices, dependable service and the real manufacturer's warranty on Mitsubishi Radiator Hose. Order today and the store will ship your brand-new items to your door as fast as possible.

Mitsubishi Radiator Hose Parts Questions & Experts Answers

Overflow Hose
MS600623
Q: What are the signs of Radiator Hose deterioration and how should Radiator Hoses be inspected and replaced on Mitsubishi Diamante?
A:
Age hardening in hose causes the cracks and excessively tightening hose clamps may cause separation and tearing. A hose is soft, swollen and may be bursting, it needs replacement. Hoses may deteriorate internally if the cooling system is not regularly flushed. The upper and lower radiator hoses, and the heater hose should be examined at the least frequency of 30,000 miles, and also during early spring and at the beginning of the fall or winter. The engine and cooling system should be kept cold and during inspection, any cracking, rotting or collapse of the system should be noted and any weak or swollen areas replaced. When removing a hose, it is important to remove the radiator pressure cap first to prevent burns caused by hot coolant or steam. Place a clean container below the radiator or engine drain, open drain and then run the system accordingly making sure to place a close-top container to avoid damaging pets with ethylene glycol. Relax the hose clamps at each end of the hose and twist, pull and slide the hose off the fitting without damaging the connection. In case the hose is stuck, it can be carefully cut off with a razor blade, ensuring that the connection is not damaged. Clean the mounting connections, and check the clamps in case they need to be replaced. To install, wet the ends of the new hose in clean coolant, slip the clamps over the hose and then connect it to the connections, making sure that the clamps do not go more than 1/4 inch in any direction. Close the drains and add the coolant drained plus an appropriate mix to the cooling system. Lastly, inspect leaks with a pressure tester or by warming up the engine to normal operating temperature, taking care not to touch the hot or moving components when inspecting the fittings.