Prevent engine oil leaks and maintain reliable engine performance with this Genuine Nissan Harmonic Crankshaft Seal, designed to suit Nissan Patrol GU Y61 models fitted with the TB45 and TB48 petrol engines. This OEM front crankshaft oil seal is installed in the front timing cover where it seals against the harmonic balancer, preventing engine oil from escaping while allowing the crankshaft to rotate smoothly.

Over time, the original crankshaft seal can harden, shrink, or crack due to constant heat cycles, engine vibration, oil exposure, and age. A worn seal may allow engine oil to leak from the front of the engine, resulting in oil contamination of the harmonic balancer, drive belts, and surrounding engine components. Replacing the seal with a Genuine Nissan component restores a reliable factory seal, helping to prevent oil loss and protect your engine from unnecessary wear.

Features & Benefits

• Prevents engine oil leaks from the front crankshaft
• Seals against the harmonic balancer for reliable oil retention
• Manufactured to Nissan factory specifications for precise fitment
• High-quality oil and heat-resistant sealing material
• Maintains proper engine lubrication and oil pressure
• Direct replacement for worn, hardened, or leaking original seals
• Ideal during harmonic balancer, timing cover, or front engine servicing
• Helps protect drive belts and engine components from oil contamination

Vehicle Fitment

• Nissan Patrol GU Y61 TB45 Petrol
• Nissan Patrol GU Y61 TB48 Petrol

Please check your vehicle compatibility before purchasing. Contact us with your VIN if you require assistance confirming fitment.

Common Signs You May Need Harmonic Crankshaft Seal Replacement

• Engine oil leaking from the front of the engine
• Oil visible around the harmonic balancer or crankshaft pulley
• Oil contamination on accessory drive belts
• Hardened, cracked, or damaged crankshaft seal
• Oil spots beneath the front of the vehicle
• Seal removed during harmonic balancer replacement
• Front engine oil leak diagnosed during servicing
• Preventative replacement during timing cover or front engine repairs

Replacing a worn harmonic crankshaft seal helps prevent engine oil leaks, maintain proper lubrication, and protect surrounding engine components from oil contamination. Choosing a Genuine Nissan OEM replacement ensures precise fitment, long-lasting sealing performance, and dependable reliability for your Nissan Patrol GU Y61 TB45 or TB48 petrol engine.