Maintain a leak-free automatic transmission cooling system with this Genuine Nissan Auto Transmission Cooler Pipe Line Copper Washer. This OEM sealing washer is used at the connection points where the transmission cooler hard lines meet the transmission or radiator, providing a secure seal under high fluid pressure.

Designed as a crush-type copper washer, it deforms when tightened to create a reliable, fluid-tight seal. These washers are single-use components and should always be replaced whenever the cooler lines are removed or serviced.

Features & Benefits

• Genuine Nissan OEM Part
• Part Number: 21626-32U00
• Designed for automatic transmission cooler line fittings
• Crush-style copper washer for high-pressure sealing
• Prevents automatic transmission fluid leaks
• Ensures proper transmission cooling system operation
• Heat- and fluid-resistant OEM-grade copper construction
• Direct-fit replacement for factory sealing washer
• Essential service item during transmission work
• Helps protect against transmission damage caused by fluid loss

Common Symptoms of a Worn or Reused Washer

• Transmission fluid leaks at cooler line fittings
• Low automatic transmission fluid levels
• Harsh or delayed gear shifting
• Transmission overheating
• Fluid seepage around banjo bolt connections

Vehicle Fitment

Suits a range of Nissan models including:

• Nissan Patrol GU Y61 (select automatic transmission variants)
• Nissan Navara D22 / D40 (automatic models with cooler lines)
• Other Nissan vehicles using compatible automatic transmission cooler line banjo fittings

Fitment is transmission- and line-specific. Always confirm part number compatibility before purchase.