Part number 93010734703 (formatted as 930.107.347.03) is a left-side (driver's side) camshaft carrier & hydraulic timing chain tensioner oil feed line for 1984–1989 Porsche 911 Carrera (3.2L) and 1983–1989 Porsche 911 Turbo / 930 (3.3L) models. Alternate numbers are 93010734714 and 9301073471Y. (20b)
- Original Factory Era Look. Original 1983–1989 factory lines (
93010734703 / 93010734704 / 93010734705) left Stuttgart in yellow zinc, before Cohline transitioned aftermarket/OES production to RoHS-compliant silver zinc plating. If you are doing a concours restoration, you'll want to match the original yellow zinc appearance shown here. The crimps are stamped "made in W. Germany" which dates production before Oct 1990.
- Porsche 911 Carrera 3.2L (1984–1989). Coupe, Targa, Cabriolet, and 1989 Speedster.
- Porsche 911 Turbo / 930 3.3L (1983–1989). Models built from approximately 02/1983–08/1983 through 07/1989 (from engine serial number
64D3717 onward).
- Earlier Porsche 911 & 911 SC (1968–1983, Retrofit Only). Fits 1968–1983 air-cooled 911 models only if they have been upgraded to the late-style Carrera hydraulic pressure-fed timing chain tensioner kit.
What It Does
- Pressurized Oil Delivery. Routes pressurized engine oil from the crankcase/oil system to the left-hand (driver's side) camshaft housing and the left hydraulic timing chain tensioner.
- Maintains Timing Chain Tension. Keeps consistent oil pressure on the left timing chain tensioner across all engine RPMs to prevent chain slap, timing drift, and catastrophic valve-to-piston contact.
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