How to replace an oil cooler on an engine with an automatic transmission on Nissan Pathfinder?

The oil cooler of engines with automatic transmissions is connected to an adapter on the front part of the oil pan near the oil filter. It also contains the oil pressure sending unit and it has got a pressure relief valve for oil. The engine has got two hoses that are used to connect the cooler: one is used as an inlet side while another one serves as an outlet side. The radiator coolant is what helps in reducing temperature of oil by using an oil cooler. To replace the oil cooler, drain the engine oil and cooling system, detach the hoses, remove the oil pressure sending unit, and loosen the retaining bolt to remove the oil cooler and O-rings. If necessary, separate this oil cooler adapter from its upper aluminum section of this same kind of pan. Then clean these mating surfaces, attach new gasket and then fix on top of that adapter again. The O-rings need to be lubricated before fitting it on top of that casting protusion while aligning those tabs over this cooler's body so as to fit into this adapter' s casting protusions. Next tighten the retaining bolt onto specified torque value, install hoses and check for leakage after running engine. Lastly check levels of coolant and oils adding those where necessary.

Genuine Nissan Pathfinder Engine Oil Cooler

Oil Cooler

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14 Engine Oil Coolers found

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Nissan Pathfinder Cooler Assembly - Oil
Part Number: 21305-4W002
$773.98 MSRP: $1031.97
You Save: $257.99 (25%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Oil Cooler Assy
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2000-2002 Nissan Pathfinder | LE, SE, XE | 6 Cyl 3.5L | VQ35DE
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Nissan Pathfinder Cooler Assembly-Oil
Part Number: 21305-4W003
$457.07 MSRP: $700.73
You Save: $243.66 (35%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Oil Cooler Assy
- Replaced by: 21305-4W00A
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2001-2004 Nissan Pathfinder | LE, SE, XE | 6 Cyl 3.5L | VQ35DE
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Nissan Pathfinder Cooler Assembly-Oil
Part Number: 21305-9N00A
$501.53 MSRP: $768.90
You Save: $267.37 (35%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Oil Cooler Assy; Oil Cooler
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2022-2024 Nissan Pathfinder
- 2013-2020 Nissan Pathfinder | Platinum, S, SL, SV | 6 Cyl 3.5L | VQ35DD, VQ35DE
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Nissan Pathfinder Cooler ASY Oil
Part Number: 21305-JA12B
$469.00 MSRP: $719.02
You Save: $250.02 (35%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Oil Cooler Assy
- Replaced by: 21305-JA13B
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2013-2014 Nissan Pathfinder | Platinum, S, SL, SV | 6 Cyl 3.5L | VQ35DE
View related parts
Nissan Pathfinder Oil Cooler Assy
Part Number: 21305-3KY0A
$660.96 MSRP: $1013.32
You Save: $352.36 (35%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaced by: 21305-3KY1A
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2014 Nissan Pathfinder | Platinum, SL, SV | 4 Cyl 2.5L | QR25DER
View related parts
Nissan Pathfinder Cooler ASY Oil
Part Number: 21305-3KY1A
$660.96 MSRP: $1013.32
You Save: $352.36 (35%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Oil Cooler Assy; Oil Cooler
- Replaces: 21305-3KY0A
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2014 Nissan Pathfinder | Platinum, SL, SV | 4 Cyl 2.5L | QR25DER
View related parts
Nissan Pathfinder Cooler ASY Oil
Part Number: 21305-EA21B
Product Specifications
- Other Name: Oil Cooler Assy
- Replaced by: 21305-EA24B
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2008-2012 Nissan Pathfinder | LE, S, SE, SE Off-Road, SV | 6 Cyl 4.0L | VQ40DE
View related parts
Nissan Pathfinder Cooler Assembly-Oil
Part Number: 21305-EA22B
$435.83 MSRP: $553.43
You Save: $117.60 (22%)
Product Specifications
- Other Name: Oil Cooler Assy
- Replaced by: 21305-EA24B
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2011-2012 Nissan Pathfinder | LE, S, SE, Silver Edition, SV | 6 Cyl 4.0L | VQ40DE
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Nissan Pathfinder Cooler Assembly-Oil
Part Number: 21305-EA210
Product Specifications
- Other Name: Oil Cooler Assy
- Replaced by: 21305-EA21A
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2005-2008 Nissan Pathfinder | LE, S, SE, SE Off-Road, XE | 6 Cyl 4.0L | VQ40DE
View related parts
Nissan Pathfinder Cooler Assembly-Oil
Part Number: 21305-EA21A
Product Specifications
- Other Name: Oil Cooler Assy; Oil Cooler
- Replaces: 21305-EA210
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2005-2009 Nissan Pathfinder | LE, S, SE, SE Off-Road, XE | 6 Cyl 4.0L | VQ40DE
View related parts
Nissan Pathfinder Cooler ASY Oil
Part Number: 21305-ZQ51A
Product Specifications
- Other Name: Oil Cooler Assy
- Replaced by: 21305-ZQ52A
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2010-2012 Nissan Pathfinder | LE | 8 Cyl 5.6L | VK56DE
View related parts
Nissan Pathfinder Cooler Assembly-Oil
Part Number: 21305-ZQ52A
Product Specifications
- Other Name: Oil Cooler Assy; Oil Cooler
- Replaces: 21305-ZQ51A
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2010-2012 Nissan Pathfinder | LE | 8 Cyl 5.6L | VK56DE
View related parts
Nissan Pathfinder Cooler Assembly-Oil
Part Number: 21305-4W001
Product Specifications
- Other Name: Oil Cooler Assy
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2000-2001 Nissan Pathfinder | LE, SE, XE | 6 Cyl 3.5L | VQ35DE
View related parts
Nissan Pathfinder Cooler ASY Oil
Part Number: 21305-ZQ50A
Product Specifications
- Other Name: Oil Cooler Assy; Oil Cooler
- Replaces: 21305-ZE00A, 21305-ZE00B
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2007-2011 Nissan Pathfinder | LE, SE | 8 Cyl 5.6L | VK56DE

Nissan Pathfinder Engine Oil Cooler

If you need any OEM Nissan Pathfinder Engine Oil Cooler, feel free to choose them out of our huge selection of genuine Nissan Pathfinder Engine Oil Cooler. All our parts are offered at unbeatable prices and are supported by the manufacturer's warranty. In addition, we offer quick shipping to have your parts delivered to your door step in a matter of days.

Nissan Pathfinder Engine Oil Cooler Parts Questions & Experts Answers

Cooler Assembly - Oil
21305-4W002
Q: How to replace an oil cooler on an engine with an automatic transmission on Nissan Pathfinder?
A: The oil cooler of engines with automatic transmissions is connected to an adapter on the front part of the oil pan near the oil filter. It also contains the oil pressure sending unit and it has got a pressure relief valve for oil. The engine has got two hoses that are used to connect the cooler: one is used as an inlet side while another one serves as an outlet side. The radiator coolant is what helps in reducing temperature of oil by using an oil cooler. To replace the oil cooler, drain the engine oil and cooling system, detach the hoses, remove the oil pressure sending unit, and loosen the retaining bolt to remove the oil cooler and O-rings. If necessary, separate this oil cooler adapter from its upper aluminum section of this same kind of pan. Then clean these mating surfaces, attach new gasket and then fix on top of that adapter again. The O-rings need to be lubricated before fitting it on top of that casting protusion while aligning those tabs over this cooler's body so as to fit into this adapter' s casting protusions. Next tighten the retaining bolt onto specified torque value, install hoses and check for leakage after running engine. Lastly check levels of coolant and oils adding those where necessary.