Speedometer gear for PORSCHE 911 G SC 944 928 repair 20x21

Speedometer gear for PORSCHE 911 G SC 944 928 repair 20x21

excellent workmanship

Description:
If the odometer/trip meter on your vehicle has failed, then this gear is almost always the cause. The original beige-brown gears crumble over the years due to a material defect and have to be replaced.

Variants:
Most 944-IIs have this 20x21 installed! However, the 20x22 (e.g. 944 S2) or the 20x30 can also be installed. You can find both in the shop.
We can say with great certainty, but not with 100% certainty, which model has which gear size. Too many influencing factors come into play here (engine type/gearbox type/gear ratio/differential type/year of manufacture/model).
However, the following data will reliably help you determine the right gear:
20x21 (17.60mm/9.00mm) Number of teeth on the opposite partner gear: 49 teeth 911/928 mph/944
20x22 (17.60mm/9.40mm) Number of teeth on the opposite partner gear: 48 teeth 911/944 mph
20x23 (17.60mm/9.65mm) Number of teeth on the opposite partner gear: 47 teeth 944(S2)/911(G)
20x29 (17.60mm/12.05mm) Number of teeth on the opposite partner gear: 41 teeth some 928 km/h
20x30 (17.60mm/12.55mm) Number of teeth on opposite partner gear: 40 teeth 911/944
20x32 (17.60mm/13.40mm) Number of teeth on opposite partner gear: 38 teeth 928 km/h

Simply count the teeth of the gear that this gear meshes with and/or use the measurements.

Service:
We have over 100 gear variants in our range and can supply the right gears if required!

+ all alternative sizes always in stock
+ fast exchange service in the event of a size deviation

We will send you illustrated repair instructions (German/English) via email for the repair. You can also find suitable repair videos on YouTube.

Advantages:
While buying a used speedometer saves you the initial repair, it carries the risk that the gear will break soon. Storage periods and cold temperatures, in particular, cause additional damage to the gears. Due to VDO's incorrect choice of materials, all original gears of this type will break over time!
If you have ever disassembled the speedometer, we also recommend replacing the light bulbs. These lose noticeable performance over the years.

Quality:
Our gears are elaborately and faithfully manufactured using an injection molding process and are not 3D-printed custom designs. We work with a manufacturer that specializes in the production of plastic gears and is the global market leader with its repair solutions.
The so-called involute tooth geometry is retained; this is the only way to ensure low-friction sliding of the tooth flanks between the gear pairs.
We use the thermoplastic Celron with graphite additives as our material. These ensure low friction and wear-free operation.

If you disassemble the speedometer beforehand, please note that the speedometer needle shaft is very sensitive. Grip the speedometer needle in the middle and turn it counterclockwise, pulling gently. Friction is all that keeps the needle on the shaft.

partworks GmbH is a German company that specializes in reverse engineering and the distribution of spare parts for Porsche. Partworks places particular emphasis on high quality and excellent service. More than 130,000 car enthusiasts worldwide are already satisfied customers of the Paderborn-based company. As a specialist in classic car spare parts, we are aware of our customers' quality standards. Therefore, you can be sure that our replicas are based very closely on the original and in some cases even exceed them. With our own engineering department and internal testing, we can ensure the reliability of our products. Last but not least, our DIN ISO 9001 certified quality management confirms the thoroughness of our work. If you see the manufacturer's designation partworks, this either refers to an in-house development or an article from the original equipment manufacturer (OE quality). Original equipment manufacturers are those manufacturers who supplied the original product to the vehicle manufacturer but are not allowed to trade under their own brand.

Additional information:

? Diameter of large gear: 17.6mm
? Number of teeth on large gear: 20
? Diameter of small gear: 9.00mm
? Number of teeth on small gear: 21


Reference numbers:
Please note that this product is a subcomponent of the part with the following OE number(s). This is because our article is not listed separately with its own OE number as a spare part by the vehicle manufacturer. For ease of identification and assignment, the OE numbers of the corresponding assembly are listed here:

911641516FX, 911.641.516.FX, 911 641 516 FX
92864110331, 928.641.103.31, 928 641 103 31
94464131136, 944.641.311.36, 944 641 311 36
99664131136, 996.641.311.36, 996 641 311 36
110008229001
110008326064
91164151606, 911.641.516.06, 911 641 516 06
91164151603, 911.641.516.03, 911 641 516 03


Scope of delivery:
1 gear wheel

Suitable for:
Porsche 911 (75-89) (older models = mechanical speedometers have the M17 installed)
Porsche 944-II (from 05.85) (older models = mechanical speedometers have the M11/M15/M17 installed)
Porsche 928 with mph / mile speedometer
Most 944-II models have this 20x21 gear installed!
However, the 20x22 (e.g., 944 S2) or the 20x30 gear may also be installed. You can find both in the shop.
We can say with great certainty
but not with 100% certainty
which model has which gear size. Too many influencing factors come into play here (engine type/transmission type/ratio/differential type/year of manufacture/model). If, contrary to expectations, you need a different gear

Product Safety Information:
Manufacturer:
partworks GmbH
Otto-Stadler-Str. 9c
33100 Paderborn - DE
Email: info@partworks.de
Website: https://partworks.de/