do not press the back button…
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.
IMS Ancillary Parts
By OE Match
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MKII Turbo 2010-13
This OE Match Intermediate Shaft Sprocket is designed as a direct-fit replacement for the factory sprocket mounted on the intermediate shaft in many Porsche 911 models. It meshes with the timing chain to drive cam or auxiliary components, maintaining precise synchronization between crankshaft and camshaft assemblies.
Sold each, 2 required per vehicle.
Fits:
Porsche 911 1970 - 1989
Porsche 964 1989 - 1994
Porsche 993 1995 - 1998
Porsche 996 Turbo / GT2 2001 - 2005
Porsche 997.1 Turbo 2007 - 2009 (Engine type 9770)
Porsche 997.2 Turbo 2010 - 2013 (Engine type 9770)
Diagram ref no 28
The sprocket features correctly machined tooth profiles and balanced construction to minimize wear and chain noise. Each gear is dimensionally matched to Porsche factory specifications, guaranteeing perfect alignment, secure fitment, and long service life.
Ideal for use during engine rebuilds, timing chain service, or IMS restoration, this replacement sprocket restores proper chain drive operation and timing integrity to your air-cooled flat-six engine.
• Position: Mounted on the intermediate shaft (IMS) within the timing chain housing
• Function: Transmits rotational motion from the timing chain to cam drive or auxiliary systems, helping to maintain engine valve timing integrity.
• Symptoms of wear: Chain rattle, poor timing, metallic noise, valve timing error
• Benefits: OEM fit and durability, precision-machined teeth, corrosion resistance
• Installation: Direct-fit replacement; replace with new chain and tensioners for optimal timing performance
An intermediate shaft sprocket that’s worn, damaged, or misaligned can introduce timing error, chain slack, noise, or accelerated wear of timing components. Replace it when:
• You are performing a timing chain or IMS overhaul
• You find tooth damage, pitting, or wear
• You observe abnormal chain noise, jump, or performance loss
Using a fresh sprocket restores the proper tooth engagement, accurate timing, and longevity of the cam drive system, helping avoid expensive engine damage.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110512509
The product you are viewing cross references to these numbers
OEMatch IMS Ancillary Parts — Fit, Function, Confidence
OEMatch IMS ancillary parts for Porsche models support maintenance and rebuilds of the flat-six intermediate shaft and its related systems. This selection covers bearings, seals, flanges, tensioners and housings used to maintain lubrication, alignment and timing. OEMatch supplies a broad catalogue of over 4,000 part numbers and more than 8,700 original-equipment cross-references, with over 100 new products in development.
Available Types
- Bearing kits for intermediate shafts
- Seals and o-rings
- Flanges, housings and spacers
- Tensioners, guides and related fixings
Understanding OEMatch IMS Ancillary Parts
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original IMS ancillary parts.
OE (Original Equipment) refers to parts matching original specifications for the IMS ancillary parts and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM IMS ancillary parts engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models.
The intermediate shaft transmits drive and timing loads between the crankshaft and camshafts; its bearings, seals and mountings maintain alignment, control oil flow and absorb rotational forces. Correct selection of these supporting parts is essential to keep timing consistent and to limit wear under high rpm and thermal stress.
Benefits Include
- Restores correct camshaft and crank alignment
- Reduces risk of oil leaks and contamination
- Maintains chain tension and timing stability
Why IMS Ancillary Parts Wear and Fail
- Bearing wear or corrosion leading to misalignment
- Oil contamination that accelerates fatigue
- Hardened or cracked seals causing leaks
- Loss of tension from worn guides or tensioners
The Importance of Replacing with OEMatch IMS Ancillary Parts
Choosing suitable replacements for IMS ancillary parts reduces the risk of timing irregularities and consequential engine damage in Porsche flat-six engines. Replacing worn bearings, seals and guides during maintenance or rebuilds restores oil control and alignment, helping to maintain engine smoothness and reducing the likelihood of costly repairs.
Advantages
- Catalogue coverage for classic and modern Porsche engines
- Part numbers cross-referenced to original-equipment listings
- Options suitable for preventive maintenance and full rebuilds
