Subject: Oil Supply Lines For Chain Tensioner Models: 911 Carrera/911 Turbo 1987
Bulletin Number: 87 – 19
The right chain tensioner oil supply line was modified and the right and left oil supply lines are installed with an additional bracket on the chain housing cover. (Arrows in picture).
From Production Date: January 9, 1987
Engine Numbers:
911 Carrera: 64 H 04818.930/25
911 Turbo: 68 H 00730.930/68
New Part Numbers:
Right oil line: 930.107.348.09
Right bracket: 930.107.342.01
Left bracket: 930.107.341.00
2 Hose clamps: 999.511.174.02
(4x10mm)

New style parts should be installed when performing engine or oil leak repairs in the area of oil supply lines.
Important Notice: Technical Bulletins are intended for use by professional technicians, not a “Do-it-yourselfer.” They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Special tools may be required to perform certain operations identified in these bulletins. Use of tools and procedures other than those recommended in these bulletins may be detrimental to the safe operation of your vehicle. Properly trained technicians have the equipment, tools , safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your Porsche Dealer for information on whether your vehicle may benefit from the information. Part numbers listed in these bulletins are for reference only. Always check with your authorized Porsche dealer to verify correct part numbers.
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