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Glyco
Glyco for Porsche
Every year, Glyco Original Equipment (OE) bearings are installed on more than 10 million automotive, maritime and stationary engines, as well as on agricultural and construction equipment.As engine designers drive down CO2 emissions and extract more power from less fuel, conventional bearings struggle to cope with the heavy loads and high temperatures. The Glyco range of over 2,500 bearings, including main, flanged and conrod bearings, supports more than 10,000 diverse engine applications, including Porsche. Innovative materials and designs give aftermarket customers significant benefits including long life.
Choosing the Right Fit for Your Porsche
Where Glyco is listed for Porsche, use the supplied model coverage and OE references to confirm suitability. Check details that commonly affect fitment such as model year, side/position, and connector type where relevant.
- Typical reasons to choose Glyco bearings on a Porsche build include preventative replacement during an overhaul, restoring reliable clearances, and improving confidence for higher-load use.
- Common engine-bearing related symptoms include low oil pressure, knocking under load, metallic debris in the oil, and bearing noise during start-up, often linked to oil starvation, contamination, incorrect clearances, or detonation.
- Before committing to major work, carry out structured checks such as measuring clearances and inspecting components rather than assuming standard sizes or conditions.
Browse by Category
If you already know the area you are working on, start with the category and then filter by Porsche model. Where real-world symptoms and typical reasons to replace are provided, use them to keep the wording grounded.
Engine Rebuild Parts — Engine rebuild parts are typically used when a Porsche engine shows signs of internal wear or damage, or during a planned overhaul. They allow you to replace items such as chains, guides, gaskets, bearings, and fasteners while the engine is apart, improving reliability and helping to avoid repeat strip-downs.
- Before deciding on a full rebuild, use tests such as compression, leak-down, bore inspection, and oil/filter checks to understand internal condition.
- When the engine is apart, consider replacing hard-to-access wear items “while you’re in there” to make best use of the labour.
Intermediate shaft (IMS) — IMS components cover the intermediate shaft, bearing and related timing parts on applicable Porsche engines. They are often replaced preventatively or when there are signs of wear, timing issues, or debris in the oil, as IMS problems can lead to serious engine damage if ignored.
- Use regular oil and filter inspections to look for metallic debris as an early warning where IMS risk is known.
- Plan IMS work to coincide with clutch or gearbox removal when possible, as access is similar and helps control labour.
IMS Replacement Bearing — IMS replacement bearings are upgrade or service parts for engines where the original bearing design is known to be a potential weak point. They are usually fitted as a preventative measure, particularly when the gearbox is already out, to reduce the likelihood of sudden bearing failure.
- “No symptoms” does not always mean “no risk” on IMS bearings, so periodic inspection and oil/filter checks are useful.
- After IMS work, many owners adopt shorter oil change intervals and keep an eye on new noises or leaks around the IMS area.
IMS Ancillary Parts — IMS ancillary parts include flanges, seals, hardware and associated components that support the intermediate shaft system. They are frequently renewed alongside IMS bearing work to minimise oil leaks and avoid needing to revisit the area for small but critical items.
- Replace seals, flange gaskets and any single-use fasteners during IMS work rather than reusing old parts.
- If you see oil seepage at the rear of the engine, confirm whether it is from the IMS area or another seal before ordering parts.
Engine Bearings / Shells — Engine bearings and shells provide the critical running surfaces for the crankshaft and connecting rods. On Porsche engines they are commonly renewed during rebuilds, after low oil pressure incidents, or when wear is suspected due to mileage, contamination or heavy use.
- Do not rely on noise alone; low oil pressure or metal in the oil can indicate bearing issues before audible knock appears.
- During bearing work, always inspect and measure crank journals and clearances, and address any root cause such as oil supply or contamination.
Explore Glyco at Design911
View the current Glyco range for Porsche at Design911, then filter by model and category to narrow down to the right parts.

Fits:
Porsche 911 2.7L 1975-77
Porsche 911 Turbo 3.0L 1975-77
Cars with engine numbers from:
615 0306 >>
615 9067 >>
635 0095 >>
635 9041 >>
645 0389 >>
645 9031 >>
655 0023 >>
655 9022 >>
665 0114 >>
Click picture for large parts diagram.
Diagram Ref No 23, 24.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91110190200
The product you are viewing cross references to these numbers
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1975-1977 3.0L Turbo (930)
Includes 24 x Bearing shells / 2 x End shells
Porsche 911 2.4L / 2.7L 1965-77
Porsche 911 Carrera 3 1976
Porsche 914 1970-76
Cars with engine numbers upto:
>> 615 0305
>> 615 9066
>> 635 0094
>> 635 9040
>> 645 0388
>> 645 9030
>> 655 0022
>> 655 9021
>> 665 0113
Diagram Ref No 24 + 25
Consists of part numbers:
- 901 101 131 00 - Bearing shell x2
- 901 101 132 02 - Bearing shell x12
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91110190100
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- 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 914 (1970-1976)