Keep your radiator firmly in place and vibration-free with the OEM Nissan Radiator Assembly Mount Cushion (Part #21508-4P00A). This essential rubber isolator helps secure the radiator within its cradle while absorbing engine vibrations and road shock, protecting your cooling system from long-term damage.

Radiator Assembly Mount Cushion (21508-4P00A) – OEM Replacement Part for Nissan

Over time, radiator cushions degrade, compress, or crack due to heat and age — potentially causing radiator misalignment, rattling, or even coolant leaks. This genuine Nissan insulator restores proper fit and support for your radiator assembly.

Specifications:
Part Type: Radiator Mounting Cushion / Isolator
Function: Damps vibration and supports the radiator within the vehicle’s core support
Construction: High-density OEM-spec rubber with molded groove for cradle fitment
Position: Upper or lower radiator support (varies by vehicle design)
Includes: One radiator cushion (radiator may require two or more total)

Compatible Nissan Models:
2004–Present Nissan Frontier – D40US
2012–2017 Nissan Leaf – ZE0UUS
2017–2025 Nissan Leaf – ZE1UUS
2004–2012 Nissan Pathfinder – R51US
2015–Present Nissan Titan – A61US
2005–2015 Nissan Xterra – N50US
Confirm fitment based on model year, trim, and cooling system configuration.
Check compatibility here by entering your VIN before ordering

Key Features:

• Genuine Nissan radiator insulator ensures proper vibration control

• Maintains radiator alignment for optimal airflow and fan clearance

• Resists oil, heat, and environmental degradation

• Quick installation during radiator or support replacement

• Prevents stress fractures in plastic radiator tanks and hose necks

• Precision molded to match OEM cradle and bracket design

Failing to Replace a Damaged Radiator Mount Can Lead To:

• Radiator Rattling or Vibration – Causes excessive wear and noise

• Coolant Leaks – Stress at tank seams or inlet/outlet ports

• Cracked Plastic End Tanks – From overflex or misaligned radiator positioning

• Radiator Fan Contact – If alignment shifts too far from spec

• Loss of Cooling Efficiency – Airflow disrupted due to radiator sagging

Related Components to Inspect or Replace:

• Radiator Support Bracket

• Radiator Upper/Lower Hoses

• Cooling Fan Assembly

• Transmission Cooler Lines (if integrated)

• Radiator Overflow Tank & Hose

• Engine Undercover Panel (if affected by coolant leaks)

Order with Confidence:
Order the Radiator Assembly Mount Cushion (21508-4P00A) today to restore proper radiator stability and cooling system protection. This genuine Nissan part is engineered for long life and a precise fit in your vehicle’s cooling system.

Restore Your Nissan with Genuine Accessories!
Looking to restore your Nissan? We offer factory-direct Nissan accessories at competitive prices, including all-weather floor mats, pet accessories, roof carriers, and wheel locks. Whether you're restoring protection, style, or utility, shop genuine Nissan parts and accessories all in one place!

Why Buy OEM Nissan Parts from Chapman Nissan?
Every OEM part listed on our site is genuine from Nissan, built to exact factory specs for fit, function, and safety. Unlike aftermarket parts, our components are tested to work seamlessly with your vehicle’s onboard systems — including sensors, ECM logic, and emission controls.

• Fast, secure shipping from a certified Nissan dealer

• VIN check available to ensure compatibility

• Trusted by Nissan owners and professional technicians

Note: To avoid issues with return eligibility or fitment, please verify your VIN before ordering. This part is non-returnable if installed.

4.0L, lower. 2013-17. 2.5L, lower. 5.6L, TITAN.

Keep your radiator firmly in place and vibration-free with the OEM Nissan Radiator Assembly Mount Cushion (Part #21508-4P00A). This essential rubber isolator helps secure the radiator within its cradle while absorbing engine vibrations and road shock, protecting your cooling system from long-term damage.

Radiator Assembly Mount Cushion (21508-4P00A) – OEM Replacement Part for Nissan

Over time, radiator cushions degrade, compress, or crack due to heat and age — potentially causing radiator misalignment, rattling, or even coolant leaks. This genuine Nissan insulator restores proper fit and support for your radiator assembly.

Specifications:
Part Type: Radiator Mounting Cushion / Isolator
Function: Damps vibration and supports the radiator within the vehicle’s core support
Construction: High-density OEM-spec rubber with molded groove for cradle fitment
Position: Upper or lower radiator support (varies by vehicle design)
Includes: One radiator cushion (radiator may require two or more total)

Compatible Nissan Models:
2004–Present Nissan Frontier – D40US
2012–2017 Nissan Leaf – ZE0UUS
2017–2025 Nissan Leaf – ZE1UUS
2004–2012 Nissan Pathfinder – R51US
2015–Present Nissan Titan – A61US
2005–2015 Nissan Xterra – N50US
Confirm fitment based on model year, trim, and cooling system configuration.
Check compatibility here by entering your VIN before ordering

Key Features:

• Genuine Nissan radiator insulator ensures proper vibration control

• Maintains radiator alignment for optimal airflow and fan clearance

• Resists oil, heat, and environmental degradation

• Quick installation during radiator or support replacement

• Prevents stress fractures in plastic radiator tanks and hose necks

• Precision molded to match OEM cradle and bracket design

Failing to Replace a Damaged Radiator Mount Can Lead To:

• Radiator Rattling or Vibration – Causes excessive wear and noise

• Coolant Leaks – Stress at tank seams or inlet/outlet ports

• Cracked Plastic End Tanks – From overflex or misaligned radiator positioning

• Radiator Fan Contact – If alignment shifts too far from spec

• Loss of Cooling Efficiency – Airflow disrupted due to radiator sagging

Related Components to Inspect or Replace:

• Radiator Support Bracket

• Radiator Upper/Lower Hoses

• Cooling Fan Assembly

• Transmission Cooler Lines (if integrated)

• Radiator Overflow Tank & Hose

• Engine Undercover Panel (if affected by coolant leaks)

Order with Confidence:
Order the Radiator Assembly Mount Cushion (21508-4P00A) today to restore proper radiator stability and cooling system protection. This genuine Nissan part is engineered for long life and a precise fit in your vehicle’s cooling system.

Restore Your Nissan with Genuine Accessories!
Looking to restore your Nissan? We offer factory-direct Nissan accessories at competitive prices, including all-weather floor mats, pet accessories, roof carriers, and wheel locks. Whether you're restoring protection, style, or utility, shop genuine Nissan parts and accessories all in one place!

Why Buy OEM Nissan Parts from Chapman Nissan?
Every OEM part listed on our site is genuine from Nissan, built to exact factory specs for fit, function, and safety. Unlike aftermarket parts, our components are tested to work seamlessly with your vehicle’s onboard systems — including sensors, ECM logic, and emission controls.

• Fast, secure shipping from a certified Nissan dealer

• VIN check available to ensure compatibility

• Trusted by Nissan owners and professional technicians

Note: To avoid issues with return eligibility or fitment, please verify your VIN before ordering. This part is non-returnable if installed.

4.0L, lower. 2013-17. 2.5L, lower. 5.6L, TITAN.