Flanged Copper Locking Exhaust Nuts Suit Nissan Patrol and Navara with ZD30 Motors, VQ40 & YD25 motors These are the nuts that are used to Bolt the Exhaust manifold to the head, and in a YD25 motor they are used to mount the Dump pipe to the Turbo The studs and Nuts get affected by the amount of heat around the turbo manifolds- we recommend replacing them when you have the manifold off- as its a very painful exercise to have the nuts come loose after a short period or have the studs snap as you are tensioning them up. Depending on the engine there is a Different Qty Required ZD30 x8 For head to Manifold YD25x 8 For Head to Manifold YD25 x 3 for the Dump Pipe VQ40x 12 For Head to Manifold In Some applications the flange on these nuts may foul - we also carry them in a non flanged version We also sell the Studs separately or in kit form for different models of vehicle- so search our other listings for these kits
