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

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

Excellent workmanship quality

Description:
If the odometer/trip meter has failed on your vehicle, 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-II 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 reliably helps to determine the right gear:
20x21 (17.60mm/9.00mm) number of teeth opposite partner gear: 49 teeth 911/928 mph/944
20x22 (17.60mm/9.40mm) Number of teeth opposite partner gear: 48 teeth 911/944 mph
20x23 (17.60mm/9.65mm) Number of teeth opposite partner gear: 47 teeth 944(S2)/911(G)
20x29 (17.60mm/12.05mm) Number of teeth opposite partner gear: 41 teeth some 928 km/h
20x30 (17.60mm/12.55mm) number of teeth opposite partner gear: 40 teeth 911/944
20x32 (17.60mm/13.40mm) number of teeth 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 to help you.

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 discrepancy

For the repair, we will send you illustrated repair instructions (German/English) by email. You can also find suitable repair videos on YouTube.

Advantages:
Buying a used speedometer saves you from having to repair it initially, but carries the risk that the gear will break in the near future. Storage times and cold temperatures in particular cause additional damage to the gears. Due to incorrect material choice by VDO, all original gears of this type will break over time!
If you have dismantled the speedometer, we also recommend replacing the light bulbs. These noticeably lose performance over the years.

Quality:
Our gears are elaborately and faithfully manufactured using injection molding and are not self-made 3D printed products. 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.
The material we use is the thermoplastic Celron with graphite additives. These ensure low friction and wear-free operation.

If you disassemble the speedometer in advance, please note that the shaft of the speedometer needle is very sensitive. Grip the center of the speedometer needle and turn it counterclockwise. Pull lightly. Friction is everything 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. Particular emphasis is placed on high quality and excellent service. More than 130,000 car fans worldwide are already satisfied customers of the Paderborn-based company. As a specialist company for classic car spare parts, we are aware of the quality requirements of our customers. Therefore, when it comes to subsequent developments, you can be sure that the requirements are very close to 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 information partworks, it means either an in-house development or an item from the original manufacturer (OE quality). Original equipment manufacturers are those manufacturers who have supplied the original product to the vehicle manufacturer but cannot be active in free trade under their own brand.

Additional Information:

● Large gear diameter: 17.6mm
● Number of teeth on large gear: 20
● Small gear diameter: 9.00mm
● Number of teeth small gear: 21


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-II 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 do so with great certainty
but cannot say with 100% certainty
which model has which gear size installed. Too many influencing factors come into play here (engine type/gearbox type/gear 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/