Restore correct crankcase ventilation with this Genuine Nissan Rocker Cover Breather Hose Set, designed to suit Nissan Patrol GQ Y60 models fitted with the TB42S 4.2L carburettor petrol engine. This kit contains both of the rocker cover breather hoses that join the rocker cover to the air box and the intake manifold, managing the blow-by gases produced during normal engine operation.

After years of heat cycles and exposure to oil fumes under the bonnet, the original rubber hoses become hard, brittle, and eventually crack or split. A leaking or split breather hose can cause significant running issues by creating a vacuum leak, which leads to a rough idle and poor performance. It also allows oily vapour to coat your engine bay and can let dirty, unfiltered air enter your engine, causing premature wear.

Manufactured to Genuine Nissan specifications from high-quality, oil-resistant rubber, this hose set is pre-formed and moulded specifically for the TB42S engine, ensuring a direct fit without kinks or flow restrictions. It's the correct, direct-fit solution to restore the crankcase ventilation system to factory specification on your Nissan Patrol.

Features & Benefits

• Genuine Nissan OEM parts for guaranteed quality and secure fitment
• Designed specifically for the TB42S carburettor engine in Nissan Patrol GQ Y60
• Manufactured from high-quality, oil-resistant rubber to withstand harsh under-bonnet conditions
• Pre-formed and moulded for a direct fit without kinks or flow restrictions
• Restores the correct function of the positive crankcase ventilation (PCV) system
• Helps prevent vacuum leaks, rough idle and poor engine performance
• Helps prevent oily vapour build-up in the engine bay
• Helps stop dirty, unfiltered air entering the engine
• Manufactured to Nissan's original factory specifications

Kit Contents

• 2 x Rocker Cover Breather Hoses (joining the rocker cover to the air box and intake manifold)

Vehicle Fitment

Suitable for:

• Nissan Patrol Y60 GQ — TB42S 4.2L carburettor petrol engine
• Ford Maverick DA — TB42S 4.2L carburettor petrol engine

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

Common Signs You May Need Breather Hose Replacement

• Rough idle or hesitation linked to a vacuum leak
• Hard, brittle, cracked or split rubber hose visible on inspection
• Oily residue coating the engine bay
• Reduced engine performance or poor running
• Dirty or unfiltered air entering the intake system
• Routine engine maintenance or carburettor servicing

Fitting a complete Genuine Nissan rocker cover breather hose set restores correct crankcase ventilation, helps prevent vacuum leaks and rough running, and supports reliable engine performance in your Nissan Patrol GQ Y60 TB42S.