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TYCPart #: 2-21081

TYC 2-21081 Alternator

Name: TYC 2-21081 Alternator
Brand: TYC
SKU: FQPX-2-21081
Price: 220.25 USD
Availability: InStock

⚙️ 145 vehicles fit this part

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✅OE Direct Replacement — Bolt-on fit, no modifications needed

🚗Fitment: Audi and Volkswagen, A3, A3 Quattro, Arteon, Atlas, Golf, GTI, Q3, S3, and TT Quattro

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Reliable Alternator Replacement for Audi and Volkswagen Vehicles

The TYC 2-21081 alternator is designed to meet the electrical demands of select Audi and Volkswagen models. Engineered with a 140 amp power generation capacity, this alternator ensures consistent charging performance for your vehicle's battery and electrical system.

OE Manufacturer: Bosch
Power Generation: 140 amps
Pulley Wheel Design: Regular with 6 grooves
Rotation Direction: Clockwise (CW)
Compatible with multiple Audi and Volkswagen models

Technical Details and Compatibility

This alternator, part number 2-21081, features a regular pulley wheel design with six grooves, optimized for smooth belt engagement and reliable operation. The clockwise rotation direction matches factory specifications, ensuring proper fit and function. With a robust 140 amp output, it supports the electrical needs of vehicles equipped with advanced electronics and accessories.

Compatible with Audi models including A3, A3 Quattro, S3, TT Quattro, and Volkswagen models such as Arteon, Atlas, Golf, GTI, and Q3, this alternator is a direct replacement part that maintains factory performance standards.

Common Applications and Problem Resolution

Restores charging system functionality in Audi A3 and Volkswagen Golf vehicles
Resolves battery drain issues caused by faulty alternators
Eliminates dimming headlights and electrical accessory malfunctions
Prevents engine stalling related to insufficient power generation
Addresses warning lights related to charging system faults

Installation Notes and Tips

When installing the TYC 2-21081 alternator, ensure the pulley grooves align correctly with the serpentine belt. Verify the clockwise rotation direction matches the original component. It is recommended to inspect the belt tensioner and battery condition during replacement to maintain optimal system performance.

Quality Assurance and Warranty

Manufactured to meet or exceed OEM specifications, this alternator includes components from Bosch, a recognized OE manufacturer. The part number 2-21081 is backed by TYC's quality standards to provide reliable operation. Please refer to the product documentation for specific warranty details.

Brand	TYC
Part Number	2-21081
Oe Manufacturer	Bosch
Power Generation (amps)	140a
Pully Wheel Design	Regular
Pully Wheel Grooves	6
Rotation Direction	Cw

This part fits 145 vehicles. Search below:

Year	Make	Model	Submodel	Body Type	Liters	Cylinders	Fuel Type	Position	Notes
2023	Audi	Q3	S-Line Premium	Sport Utility	2.0L	L4		N/A	Bosch Brand
2023	Audi	TT Quattro	Base	Convertible	2.0L	L4		N/A	Bosch Brand
2022	Audi	Q3	Premium	Sport Utility	2.0L	L4		N/A	Bosch Brand
2022	Audi	TT Quattro	Base	Convertible	2.0L	L4		N/A	Bosch Brand
2021	Audi	Q3	Premium	Sport Utility	2.0L	L4		N/A	Bosch Brand
2021	Audi	Q3	S-Line Premium	Sport Utility	2.0L	L4		N/A	Bosch Brand
2021	Audi	Q3	S-Line Premium Plus	Sport Utility	2.0L	L4		N/A	Bosch Brand
2021	Audi	Q3	Premium Plus	Sport Utility	2.0L	L4		N/A	Bosch Brand
2021	Audi	TT Quattro		Coupe	2.0L	L4		N/A	Bosch Brand
2021	Audi	TT Quattro		Convertible	2.0L	L4		N/A	Bosch Brand
2021	Volkswagen	Arteon	SEL R-Line	Hatchback	2.0L	L4		N/A	Power Generation (Amps): 140A; Bosch Brand
2021	Volkswagen	Arteon	SE	Hatchback	2.0L	L4		N/A	Power Generation (Amps): 140A; Bosch Brand
2021	Volkswagen	Arteon	SEL Premium R-Line	Hatchback	2.0L	L4		N/A	Power Generation (Amps): 140A; Bosch Brand
2021	Volkswagen	GTI	S	Hatchback	2.0L	L4		N/A	Power Generation (Amps): 140A
2021	Volkswagen	GTI	SE	Hatchback	2.0L	L4		N/A	Power Generation (Amps): 140A
2021	Volkswagen	GTI	Autobahn	Hatchback	2.0L	L4		N/A	Power Generation (Amps): 140A
2020	Audi	A3	Premium	Sedan	2.0L	L4		N/A	To 01/13/2020; Bosch Brand
2020	Audi	A3	Premium Plus	Sedan	2.0L	L4		N/A	To 01/13/2020; Bosch Brand
2020	Audi	A3 Quattro	Premium Plus	Sedan	2.0L	L4		N/A	To 01/13/2020; Bosch Brand
2020	Audi	A3 Quattro	Premium	Sedan	2.0L	L4		N/A	To 01/13/2020; Bosch Brand
2020	Audi	Q3	S-Line Premium	Sport Utility	2.0L	L4		N/A	Bosch Brand
2020	Audi	Q3	S-Line Premium Plus	Sport Utility	2.0L	L4		N/A	Bosch Brand
2020	Audi	Q3	S-Line Prestige	Sport Utility	2.0L	L4		N/A	Bosch Brand
2020	Audi	Q3	Premium	Sport Utility	2.0L	L4		N/A	Bosch Brand
2020	Audi	Q3	Premium Plus	Sport Utility	2.0L	L4		N/A	Bosch Brand
2020	Audi	S3	Premium	Sedan	2.0L	L4		N/A	To 01/13/2020; Bosch Brand
2020	Audi	S3	Premium Plus	Sedan	2.0L	L4		N/A	To 01/13/2020; Bosch Brand
2020	Audi	TT Quattro		Coupe	2.0L	L4		N/A	Bosch Brand
2020	Audi	TT Quattro		Convertible	2.0L	L4		N/A	Bosch Brand
2020	Volkswagen	Arteon	SEL R-Line	Hatchback	2.0L	L4		N/A	Power Generation (Amps): 140A; Bosch Brand
2020	Volkswagen	Arteon	SEL	Hatchback	2.0L	L4		N/A	Power Generation (Amps): 140A; Bosch Brand
2020	Volkswagen	Arteon	SEL Premium R-Line	Hatchback	2.0L	L4		N/A	Power Generation (Amps): 140A; Bosch Brand
2020	Volkswagen	Arteon	SE	Hatchback	2.0L	L4		N/A	Power Generation (Amps): 140A; Bosch Brand
2020	Volkswagen	Atlas	SEL Premium	Sport Utility	2.0L	L4		N/A	Power Generation (Amps): 140A; Bosch Brand
2020	Volkswagen	Atlas	S	Sport Utility	2.0L	L4		N/A	Power Generation (Amps): 140A; Bosch Brand
2020	Volkswagen	Atlas	SE	Sport Utility	2.0L	L4		N/A	Power Generation (Amps): 140A; Bosch Brand
2020	Volkswagen	Atlas	SEL	Sport Utility	2.0L	L4		N/A	Power Generation (Amps): 140A; Bosch Brand
2020	Volkswagen	GTI	Autobahn	Hatchback	2.0L	L4		N/A	Power Generation (Amps): 140A
2020	Volkswagen	GTI	S	Hatchback	2.0L	L4		N/A	Power Generation (Amps): 140A
2020	Volkswagen	GTI	SE	Hatchback	2.0L	L4		N/A	Power Generation (Amps): 140A
2019	Audi	A3	Premium	Convertible	2.0L	L4		N/A	Power Generation (Amps): 140A; Bosch Brand
2019	Audi	A3	Titanium	Sedan	2.0L	L4	GAS	N/A	Bosch Brand
2019	Audi	A3	Premium Plus	Convertible	2.0L	L4		N/A	Power Generation (Amps): 140A; Bosch Brand
2019	Audi	A3	Prestige	Sedan	2.0L	L4	GAS	N/A	Bosch Brand
2019	Audi	A3	Premium	Sedan	2.0L	L4	GAS	N/A	Bosch Brand
2019	Audi	A3	Premium Plus	Sedan	2.0L	L4	GAS	N/A	Bosch Brand
2019	Audi	A3	Prestige	Convertible	2.0L	L4		N/A	Power Generation (Amps): 140A; Bosch Brand
2019	Audi	A3 Quattro	Premium Plus	Sedan	2.0L	L4		N/A	Bosch Brand
2019	Audi	A3 Quattro	Premium	Sedan	2.0L	L4		N/A	Bosch Brand
2019	Audi	A3 Quattro	Prestige	Sedan	2.0L	L4		N/A	Bosch Brand
2019	Audi	Q3	Prestige	Sport Utility	2.0L	L4		N/A	Bosch Brand
2019	Audi	Q3	Premium Plus	Sport Utility	2.0L	L4		N/A	Bosch Brand
2019	Audi	Q3	Premium	Sport Utility	2.0L	L4		N/A	Bosch Brand
2019	Audi	S3	Premium Plus	Sedan	2.0L	L4		N/A	Bosch Brand
2019	Audi	S3	Prestige	Sedan	2.0L	L4		N/A	Bosch Brand
2019	Audi	TT Quattro		Convertible	2.0L	L4		N/A	Bosch Brand
2019	Audi	TT Quattro		Coupe	2.0L	L4		N/A	Bosch Brand
2019	Volkswagen	Arteon	SEL Premium R-Line	Hatchback	2.0L	L4		N/A	Power Generation (Amps): 140A; Bosch Brand
2019	Volkswagen	Arteon	SEL R-Line	Hatchback	2.0L	L4		N/A	Power Generation (Amps): 140A; Bosch Brand
2019	Volkswagen	Arteon	SE	Hatchback	2.0L	L4		N/A	Power Generation (Amps): 140A; Bosch Brand
2019	Volkswagen	Arteon	SEL	Hatchback	2.0L	L4		N/A	Power Generation (Amps): 140A; Bosch Brand
2019	Volkswagen	Atlas	S	Sport Utility	2.0L	L4		N/A	Power Generation (Amps): 140A; Bosch Brand
2019	Volkswagen	Atlas	SE	Sport Utility	2.0L	L4		N/A	Power Generation (Amps): 140A; Bosch Brand
2019	Volkswagen	GTI	Rabbit Edition	Hatchback	2.0L	L4		N/A	Power Generation (Amps): 140A
2019	Volkswagen	GTI	SE	Hatchback	2.0L	L4		N/A	Power Generation (Amps): 140A
2019	Volkswagen	GTI	Autobahn	Hatchback	2.0L	L4		N/A	Power Generation (Amps): 140A
2019	Volkswagen	GTI	S	Hatchback	2.0L	L4		N/A	Power Generation (Amps): 140A
2018	Audi	A3	Premium	Convertible	2.0L	L4		N/A	Power Generation (Amps): 140A; Bosch Brand
2018	Audi	A3	Prestige	Convertible	2.0L	L4		N/A	Power Generation (Amps): 140A; Bosch Brand
2018	Audi	A3	Premium Plus	Convertible	2.0L	L4		N/A	Power Generation (Amps): 140A; Bosch Brand
2018	Audi	A3	Prestige	Sedan	2.0L	L4	GAS	N/A	Bosch Brand
2018	Audi	A3	Premium	Sedan	2.0L	L4	GAS	N/A	Bosch Brand
2018	Audi	A3	Premium Plus	Sedan	2.0L	L4	GAS	N/A	Bosch Brand
2018	Audi	A3 Quattro	Premium Plus	Sedan	2.0L	L4		N/A	Bosch Brand
2018	Audi	A3 Quattro	Premium	Sedan	2.0L	L4		N/A	Bosch Brand
2018	Audi	A3 Quattro	Prestige	Sedan	2.0L	L4		N/A	Bosch Brand
2018	Audi	S3	Prestige	Sedan	2.0L	L4		N/A	Bosch Brand
2018	Audi	S3	Premium Plus	Sedan	2.0L	L4		N/A	Bosch Brand
2018	Audi	TT Quattro		Convertible	2.0L	L4		N/A	Bosch Brand
2018	Audi	TT Quattro		Coupe	2.0L	L4		N/A	Bosch Brand
2018	Volkswagen	Atlas	S	Sport Utility	2.0L	L4		N/A	Power Generation (Amps): 140A; Bosch Brand
2018	Volkswagen	Atlas	SE	Sport Utility	2.0L	L4		N/A	Power Generation (Amps): 140A; Bosch Brand
2018	Volkswagen	Atlas	SEL	Sport Utility	2.0L	L4		N/A	Power Generation (Amps): 140A; Bosch Brand
2018	Volkswagen	Golf	SE	Hatchback	1.8L	L4		N/A	Power Generation (Amps): 140A
2018	Volkswagen	Golf	S	Hatchback	1.8L	L4		N/A	Power Generation (Amps): 140A
2018	Volkswagen	GTI	SE	Hatchback	2.0L	L4		N/A	Power Generation (Amps): 140A
2018	Volkswagen	GTI	S	Hatchback	2.0L	L4		N/A	Power Generation (Amps): 140A
2018	Volkswagen	GTI	Autobahn	Hatchback	2.0L	L4		N/A	Power Generation (Amps): 140A
2017	Audi	A3	Premium Plus	Convertible	2.0L	L4		N/A	Power Generation (Amps): 140A; Bosch Brand
2017	Audi	A3	Premium	Convertible	2.0L	L4		N/A	Power Generation (Amps): 140A; Bosch Brand
2017	Audi	A3	Prestige	Convertible	2.0L	L4		N/A	Power Generation (Amps): 140A; Bosch Brand
2017	Audi	A3	Premium Plus	Sedan	2.0L	L4	GAS	N/A	Bosch Brand
2017	Audi	A3	Premium	Sedan	2.0L	L4	GAS	N/A	Bosch Brand
2017	Audi	A3	Prestige	Sedan	2.0L	L4	GAS	N/A	Bosch Brand
2017	Audi	A3 Quattro	Premium	Sedan	2.0L	L4		N/A	Bosch Brand
2017	Audi	A3 Quattro	Prestige	Sedan	2.0L	L4		N/A	Bosch Brand
2017	Audi	A3 Quattro	Premium Plus	Sedan	2.0L	L4		N/A	Bosch Brand
2017	Audi	S3	Premium Plus	Sedan	2.0L	L4		N/A	Bosch Brand
2017	Audi	S3	Prestige	Sedan	2.0L	L4		N/A	Bosch Brand
2017	Audi	TT Quattro		Convertible	2.0L	L4		N/A	Bosch Brand
2017	Audi	TT Quattro		Coupe	2.0L	L4		N/A	Bosch Brand
2017	Volkswagen	Golf	Wolfsburg Edition	Hatchback	1.8L	L4		N/A	Power Generation (Amps): 140A
2017	Volkswagen	Golf	S	Hatchback	1.8L	L4		N/A	Power Generation (Amps): 140A
2017	Volkswagen	GTI	Sport	Hatchback	2.0L	L4		N/A	Power Generation (Amps): 140A
2017	Volkswagen	GTI	SE	Hatchback	2.0L	L4		N/A	Power Generation (Amps): 140A
2017	Volkswagen	GTI	Autobahn	Hatchback	2.0L	L4		N/A	Power Generation (Amps): 140A
2017	Volkswagen	GTI	S	Hatchback	2.0L	L4		N/A	Power Generation (Amps): 140A
2016	Audi	A3	Premium Plus	Sedan	1.8L	L4	GAS	N/A	Bosch Brand
2016	Audi	A3	Prestige	Sedan	1.8L	L4	GAS	N/A	Bosch Brand
2016	Audi	A3	Prestige	Convertible	1.8L	L4		N/A	Power Generation (Amps): 140A; Bosch Brand
2016	Audi	A3	Premium Plus	Convertible	1.8L	L4		N/A	Power Generation (Amps): 140A; Bosch Brand
2016	Audi	A3	Premium	Convertible	1.8L	L4		N/A	Power Generation (Amps): 140A; Bosch Brand
2016	Audi	A3	Premium	Sedan	1.8L	L4	GAS	N/A	Bosch Brand
2016	Audi	A3 Quattro	Prestige	Sedan	2.0L	L4		N/A	Bosch Brand
2016	Audi	A3 Quattro	Premium	Sedan	2.0L	L4		N/A	Bosch Brand
2016	Audi	A3 Quattro	Premium Plus	Sedan	2.0L	L4		N/A	Bosch Brand
2016	Audi	S3	Prestige	Sedan	2.0L	L4		N/A	Bosch Brand
2016	Audi	S3	Premium Plus	Sedan	2.0L	L4		N/A	Bosch Brand
2016	Audi	TT Quattro		Convertible	2.0L	L4		N/A	Bosch Brand
2016	Audi	TT Quattro		Coupe	2.0L	L4		N/A	Bosch Brand
2016	Volkswagen	Golf	Base	Hatchback	1.8L	L4		N/A	Power Generation (Amps): 140A
2016	Volkswagen	Golf	S	Hatchback	1.8L	L4		N/A	Power Generation (Amps): 140A
2016	Volkswagen	Golf	SEL	Hatchback	1.8L	L4		N/A	Power Generation (Amps): 140A
2016	Volkswagen	Golf	SE	Hatchback	1.8L	L4		N/A	Power Generation (Amps): 140A
2016	Volkswagen	GTI	SE	Hatchback	2.0L	L4		N/A	Power Generation (Amps): 140A
2016	Volkswagen	GTI	S	Hatchback	2.0L	L4		N/A	Power Generation (Amps): 140A
2016	Volkswagen	GTI	Autobahn	Hatchback	2.0L	L4		N/A	Power Generation (Amps): 140A
2015	Audi	A3	Premium	Convertible	1.8L	L4		N/A	Power Generation (Amps): 140A; Bosch Brand
2015	Audi	A3	Prestige	Convertible	1.8L	L4		N/A	Power Generation (Amps): 140A; Bosch Brand
2015	Audi	A3	Premium	Sedan	1.8L	L4	GAS	N/A	Bosch Brand
2015	Audi	A3	Premium Plus	Sedan	1.8L	L4	GAS	N/A	Bosch Brand
2015	Audi	A3	Prestige	Sedan	1.8L	L4	GAS	N/A	Bosch Brand
2015	Audi	A3	Premium Plus	Convertible	1.8L	L4		N/A	Power Generation (Amps): 140A; Bosch Brand
2015	Audi	A3 Quattro	Prestige	Sedan	2.0L	L4		N/A	Bosch Brand
2015	Audi	A3 Quattro	Premium Plus	Sedan	2.0L	L4		N/A	Bosch Brand
2015	Audi	A3 Quattro	Premium	Sedan	2.0L	L4		N/A	Bosch Brand
2015	Audi	S3	Premium Plus	Sedan	2.0L	L4		N/A	Bosch Brand
2015	Audi	S3	Prestige	Sedan	2.0L	L4		N/A	Bosch Brand
2015	Volkswagen	Golf	S	Hatchback	1.8L	L4		N/A	Power Generation (Amps): 140A
2015	Volkswagen	Golf	Launch Edition	Hatchback	1.8L	L4		N/A	Power Generation (Amps): 140A
2015	Volkswagen	Golf	SE	Hatchback	1.8L	L4		N/A	Power Generation (Amps): 140A
2015	Volkswagen	Golf	SEL	Hatchback	1.8L	L4		N/A	Power Generation (Amps): 140A
2015	Volkswagen	GTI	Autobahn	Hatchback	2.0L	L4		N/A	Power Generation (Amps): 140A
2015	Volkswagen	GTI	S	Hatchback	2.0L	L4		N/A	Power Generation (Amps): 140A
2015	Volkswagen	GTI	SE	Hatchback	2.0L	L4		N/A	Power Generation (Amps): 140A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

06K 903 024 C

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.