Speedometer gear for PORSCHE 911 G SC 944 928 Repair 20x21
Excellent build quality
Description:
If the odometer/trip odometer on your vehicle has failed, this gear is almost always the cause. The original beige-brown gears crumble over the years due to a material defect and must be replaced.
Variants:
Most 944-II models have this 20x21 gear installed! However, the 20x22 (e.g., 944 S2) or the 20x30 may also be installed. Both are available in our shop.
While we can say with a high degree of certainty, we cannot guarantee 100% certainty which model uses which gear size. Too many factors (engine type/transmission type/gear ratio/differential type/year of manufacture/model) are involved.
However, the following data reliably helps in determining the correct gear:
20x21 (17.60mm/9.00mm) Number of teeth on opposing gear: 49 teeth 911/928 mph/944
20x22 (17.60mm/9.40mm) Number of teeth on opposing gear: 48 teeth 911/944 mph
20x23 (17.60mm/9.65mm) Number of teeth on opposing gear: 47 teeth 944(S2)/911(G)
20x29 (17.60mm/12.05mm) Number of teeth on opposing gear: 41 teeth some 928 km/h
20x30 (17.60mm/12.55mm) Number of teeth on opposing partner gear: 40 teeth 911/944
20x32 (17.60mm/13.40mm) Number of teeth on opposing partner gear: 38 teeth 928 km/h
Simply count the teeth of the gear this gear engages with and/or use the dimensions as a guide.
Service:
We stock over 100 gear variants and can supply the appropriate gears if needed!
+ all alternative sizes always in stock
+ fast exchange service in case of size deviation
For repairs, we will send you an illustrated repair manual (German/English) via email. You can also find suitable repair videos on YouTube.
Advantages:
Buying a used speedometer initially saves on repair costs, but carries the risk that the gear will break soon. Storage and cold temperatures are particularly damaging to the gears. Due to an incorrect choice of material by VDO, all original gears of this type will break over time!
If you have the speedometer disassembled, it is also advisable to replace the bulbs. These noticeably lose brightness over the years.
Quality:
Our gears are manufactured using a complex and faithful injection molding process, not 3D-printed in-house designs. We work with a manufacturer specializing in the production of plastic gears and a global market leader in repair solutions.
The 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 material Celron with graphite additives. These ensure low friction and wear-free operation.
If you disassemble the speedometer beforehand, please note that the speedometer needle shaft is very delicate. Grip the speedometer needle in the middle and turn it counterclockwise, pulling gently. Friction is all that holds the needle on the shaft.
Partworks GmbH is a German company specializing in the reverse engineering and distribution of spare parts for Porsche. We place 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 specialists in classic car spare parts, we are aware of our customers' quality requirements. Therefore, you can be sure that our redesigned parts meet the specifications very closely and, in some cases, even exceed them. With our own engineering department and internal testing, we can guarantee the reliability of our products. Last but not least, our DIN ISO 9001-certified quality management system confirms the thoroughness of our work. If you see the manufacturer's designation "partworks," this indicates either an in-house development or an original equipment manufacturer (OEM) part (OE quality). OEMs are those manufacturers who supplied the original product to the vehicle manufacturer but cannot sell it under their own brand on the open market. Additional information: Diameter: 17.6 mm, Number of teeth: 20, Diameter: 9.00 mm, Number of teeth: 21. Reference numbers: Please note, this product is a component of the part with the following OE number(s). Our item is not listed separately with its own OE number as a spare part by the vehicle manufacturer. For ease of finding and identification, the OE numbers of the corresponding assembly groups 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
Reference numbers:
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
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-IIs have this 20x21 gear installed!
However, the 20x22 (e.g., 944 S2) or the 20x30 may also be installed. Both can be found in the shop.
While we can say with a high degree of certainty
, we cannot say with 100% certainty
which model has which gear size installed. Too many factors (engine type/transmission type/gear ratio/differential type/year of manufacture/model) are involved. Should you unexpectedly require a different gear
