do not press the back button…
-
Engine Parts
-
- Engine Rebuild Parts Oil System Parts Fuel System Parts Gaskets & Sets Radial Seal / RMS / Camshaft / Balance shaft Belts / Tensioners / Rollers Chains & Tensioners Engine Bearings / Shells Engine Bolts / Studs Engine Mounts Engine Cylinders / Liners / Pistons Connecting Rod Cylinder Head / Camshaft Carrier Crankcase Parts Crankshaft & Parts Turbo Chargers / Intercoolers & Parts Air Intake & Injection Specialist Tools
-
Brakes
-
- Brakes Brake Pads & Disc Package SPORTS Brake Pads & Disc Package Brake Disc Standard Brake Pads Standard SPORTS Brake Disc Brembo Standard brakes Brembo Racing brakes TEXTAR Brakes PAGID Racing Brakes Zimmermann Brakes Giro Slotted Brake Disc SHW Performance Brakes EBC Brakes Replacement for Ceramic Disc Brake Pad Wear Sensors Brake Pad Anti-vibration shims Caliper Bolts / Disc Screws Pin Kit and Guide Plates Performance Brake Hoses Standard Brake Hoses Caliper and Brake Lines Brake Calipers All Categories
-
- Suspension & Steering
- Transmission
-
Cooling & Heating
-
- Heating / Air Conditioning Air con condensers & desiccators Blower Motors & Fans
-
-
Electrical & Lighting
-
Body & Exhaust
-
- Chassis / Bodywork Restoration Chassis / Repair Panels Bonnets / Locks & Latches Boots / Rear Lid / Locks and Latches Bumpers Front Bumpers Rear Door Handles | Locks | Keys Door Panels | Hinges | Striker Plates Wings Rear & Parts Mirrors & Parts Stone Chip Foils / Stickers Front Wiper Arms & Blades Rear Wiper Arms & Blades Roof - Cabrio / Targa / Coupe / Speedster Plastic Covers Engine Covers Front screen Rear screen Front side glass Rear side glass Fastenings & Fixings
-
-
Lubricants & Fluids
-
- Service Parts Oil Filters Air Filters Belts All Types Spark Plugs Ignition Coils Front Wiper Arms & Blades Rear Wiper Arms & Blades Gearbox Service Parts Engine Oil & Lubricants - Mobil Engine Oil & Lubricants - Total Engine Oil & Lubricants - Castrol Engine Oil & Lubricants - Motul Engine Oil & Lubricants - Millers Oils NanoDrive Engine Oil & Lubricants - Millers Oils Fuel Additives Garage PPE
-
-
All Parts
-
- Parts Accessories Chassis / Bodywork Brakes Clothing & Gifts Electrical & Relays Engine Cooling Engine Electrical Engine Rebuild Parts Engine Tuning Exhausts Exterior Styling / Spoilers Gearbox / Transmission Heating / Air Conditioning Hydraulics Interior & Accessories Incar / Multimedia Lighting Mats & Carpets Motorsport and Off-Road Parts for Other Cars Pedal Cluster Rubber Seals All Categories
-
- Back to main website
Enter your VAT number here and click Verify:
Your details have been verified. VAT number registered to:
,
.
Your order will now be zero rated for VAT purposes. We reserve the right to verify these details after your order request has been made and reinstate VAT if required.
Your VAT details were not recognised or were invalid. Your VAT number must be matched to your Billing Country as specified above. This is currently specified as . You do not need to enter the country code part of your VAT number as this has already been selected in your billing address details above.
The VAT number checking service is currently offline. Please supply your VAT details within the comments or special instructions field below and we will apply a VAT discount after placing your order request.
Timing Chain Sprocket For Intermediate Shaft. Porsche 911 / 912 1965-69 ❭ 90110501312
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
Restore the precision of your Porsche flat-six engine’s timing chain drive with this sprocket or intermediate shaft gear. Designed for Porsche 911/912 (verify engine code and part number), this sprocket mounts on the intermediate shaft and works in conjunction with the timing chain to drive the camshafts and maintain correct valve timing.
Fits:
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
Fits On To Diagram Ref No 43
What This Product Does:
- The timing chain sprocket mounted on the intermediate shaft enables the correct transfer of rotational motion from the crank and timing chain to the camshaft drive or auxiliary drive components. In essence, it ensures proper timing of the valve train.
- The intermediate shaft (IMS) inside many Porsche air-cooled flat-six engines sits between the crankshaft and camshafts; the sprocket is part of that chain/gear drive mechanism. If the sprocket is worn, mis-dimensioned or damaged, then the timing chain may skip or the cam timing may drift.
- Because this component sits within the timing chain gear housing, correct fitment, tooth profile, heat-treatment, alignment and material spec matter a lot for high RPM reliability.
Symptoms & Signs You Might Need Replacement:
- Timing chain noise: rattling, clatter or audible chain slap in the timing chain housing, especially after startup or under load — this may indicate the sprocket tooth profile or mounting is compromised.
- Warning lights or mis-firing: If engine timing is off, cylinder performance may suffer, you might get rough running, mis-fires, or even engine damage.
- Wear/physical damage: On inspection of the sprocket, if tooth faces are chipped, worn, suspiciously polished, or suspect in dimension, replacement is required.
- During engine rebuild: If you are opening the timing chain case (IMS housing) or rebuilding the engine, it is good practice to replace the sprocket while access is open — because even if it looks OK, it’s a high-stress part and cheap insurance compared to major failure.
- High mileage or vintage engine: Because wear accumulates over decades, even if performance seems OK you might choose proactive replacement to avoid future major engine work.
- Engine timing integrity: The sprocket is a critical part of the chain drive that controls valve timing. A damaged sprocket could result in chain jump, incorrect cam timing, possible valve‐to‐piston contact or catastrophic failure.
- Longevity and reliability: Since this part operates hidden within the timing cover, failure often means heavy labour (engine out or major removal). Getting it right the first time reduces risk of future repair.
- Economical preventive maintenance: While replacing a sprocket adds cost at rebuild time, it’s far less expensive than engine damage that might result from a worn or failing sprocket – so replacing proactively is a wise choice.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110501312
The product you are viewing cross references to these numbers
Monday-Friday: 8.30am - 5.30pm (GMT)
Saturday: Closed
Sunday: Closed