Parts for your 2007 Nissan Primera-Oil seals

2007 Nissan Primera oil-seals: what they do and when to replace them

Technical confirmation: Authoritative sources including Nissan’s P12 Factory Service Manual (Engine Mechanical and Transaxle/Automatic Transmission sections) and the Nissan FAST electronic parts catalogue list multiple oil-seals for the 2007 Nissan Primera. These include the front and rear crankshaft oil-seals, camshaft oil-seals, and transaxle/output shaft and driveshaft (axle) oil-seals. Oil-seals are therefore relevant and fitted to this model.

On the 2007 Primera, oil-seals keep engine and gearbox oil where it belongs, preventing leaks at rotating shafts while letting those parts spin freely. They sit at key interfaces where a shaft exits a housing, using a precision lip and spring to hold oil in under pressure and temperature changes typical of Aussie and Kiwi conditions.

• Engine: front crankshaft (behind the crank pulley), rear main seal (between engine and gearbox), and camshaft seals (at the ends of the camshafts).
• Transaxle: differential/output shaft seals and driveshaft (CV) entry seals on manual and auto variants.

There’s no fixed kilometre interval for oil-seal replacement. They’re replaced on condition—when weeping or leaking—or proactively while adjacent work is underway. Smart moments include front cover/timing chain service for the front crank and cam seals, and clutch or gearbox removal for the rear main or transaxle seals. Owners who rack up high kilometres or lots of short trips should ask for a quick inspection each service.

Typical leak clues are oil mist or drips around the crank pulley or timing cover, oil on the undertray, dampness at the bellhousing, driveway spots, burning-oil smell on hot shutdown, or (on manuals) clutch slip if the rear main leaks. Left alone, leaks can contaminate belts, clutches, mounts, and sensors.

Best practice for replacement includes using OE or premium seals, lightly oiling the new lip, pressing the seal square with a proper driver, checking the shaft surface for grooves, and torquing related fasteners to FSM spec. It also pays to ensure the PCV system and breather hoses are clear—excess crankcase pressure can quickly push a new seal to leak. For planning: front crank or cam seals are usually a few hours’ labour