M32 Gearbox 4th Gear 47T 39mm Vauxhall Alfa Romeo 55580103 Gen 2

M32 Transmission 4th Gear 47T 39mm

Vauxhall Alfa Romeo

55580103 Generation 2

M32 Gearbox Generation 2 4th Gear 47 tooth output shaft. Inside diameter 39mm.

Please note the OE Gen 2 M32 systems use a thicker diameter output shaft at the point where 4th gear sits.

This is not compatible with Gen 1 or 3 2016
onward.

Please check the internal measurement of the gear before ordering.
39mm

Part Number(s)
55580103

Fitment location 28 on diagram

Vehicle Compatibility

Abarth
Abarth Grande Punto, 199 (2007-2009)
Abarth Punto, 199 (2012-2014)
Abarth Punto Evo, 199 (2010-2012)

Alfa Romeo
Alfa Romeo (EU) 147, 937 (2000-2010)
Alfa Romeo (EU) 156, 932 (1997-2007)
Alfa Romeo (EU) 159, 939 (2005-2011)
Alfa Romeo (EU) Brera, 939 (2006-2011)
Alfa Romeo (EU) Giulietta, 940 (2010-2021)
Alfa Romeo (EU) GT, 937 (2004-2011)
Alfa Romeo (EU) Mito, 955 (2008-2020)
Alfa Romeo (EU) Spider, 939 (2006-2011)

Chevrolet
Chevrolet (EU) (Daewoo) Cruze, J300 / J305 / J308 (2009-2014)
Chevrolet (EU) (Daewoo) Orlando, J309 (2010-2014)
Chevrolet (EU) (Daewoo) Trax / Tracker (2013-2014)
Chevrolet (EU) (Daewoo) Aveo, T300 (2011-2014)
Chevrolet (EU) (Daewoo) Malibu, V300 (2011-2015)
Chevrolet (USA / CAN) Cruze, J300 (2010-2016)
Chevrolet (USA / CAN) Cruze (2016-2020)
Chevrolet (USA / CAN) Sonic, T300 (2012-2020)

Opel
Opel ADAM, M13 (2013-2019)
Opel Astra H, A04 (2004-2010)
Opel Astra H TwinTop, A04 (2006-2010)
Opel Astra J, P10 (2009-2018)
Opel Astra K, B16 (2015-2022)
Opel Cascada, W13 (2013-2019)
Opel Corsa D, S07 (2006-2015)
Opel Corsa E, X15 (2015-2019)
Opel Insignia A, G09 (2008-2017)
Opel Insignia B, Z18 (2017-2022)
Opel Meriva A, X03 (2003-2010)
Opel Meriva B, S10 (2010-2017)
Opel Mokka, J13 (2012-2016)
Opel Mokka X, J13 (2016-2019)
Opel Zafira B, A05 (2005-2014)
Opel Zafira C, P12 (2012-2019)
Opel Signum, Z03 (2003-2008)
Opel Vectra C, Z02 (2002-2009)

Vauxhall
Vauxhall ADAM, M13 (2013-2019)
Vauxhall Astra H, A04 (2004-2010)
Vauxhall Astra H TwinTop, A04 (2006-2010)
Vauxhall Astra J, P10 (2009-2018)
Vauxhall Astra K, B16 (2015-2022)
Vauxhall Cascada, W13 (2013-2019)
Vauxhall Corsa D, S07 (2006-2015)
Vauxhall Corsa E, X15 (2015-2019)
Vauxhall Insignia A, G09 (2008-2017)
Vauxhall Insignia B, Z18 (2017-2022)
Vauxhall Meriva A, X03 (2003-2010)
Vauxhall Meriva B, S10 (2010-2017)
Vauxhall Mokka, J13 (2012-2016)
Vauxhall Mokka X, J13 (2016-2019)
Vauxhall Zafira B, A05 (2005-2014)
Vauxhall Zafira C, P12 (2012-2019)

Fiat
Fiat (EU) Bravo, 198 (2007-2015)
Fiat (EU) Croma, 194 (2005-2010)
Fiat (EU) Grande Punto, 199 (2005-2011)
Fiat (EU) Linea, 323 (2007-2014)
Fiat (EU) Punto Evo, 199 (2009-2012)

SAAB
Saab 9-5 (2010-2011)

As M32 gearbox rebuild and repair specialists, Eco Torque is proud to offer genuine gearbox parts as well as high quality aftermarket alternatives throughout its store.

Being one of the first companies in the UK to offer the M32 bearing and end-case upgrade, we pride ourselves on mastering the repairs of the gearboxes we work on.

Browse Eco Torque's ever-evolving product range available to purchase online
at competitive prices.

If you cannot find the items you need or are unsure if the part is compatible with
your vehicle make and model, please send us your UK registration number or
VIN Code and we will direct you to the right part.

Reference Number: ET2350

What is the difference between 55566890 (Gen 1) and 55580103 (Gen 2) 4th gear?

Both are 47-tooth M32 4th gears, but 55580103 has a 39mm bore dimension specific to Gen 2 and is not interchangeable with the Gen 1 part. Always verify your gearbox generation before ordering.

What Vauxhall models use the M32 Gen 2 gearbox?

The M32 Gen 2 is used in Vauxhall Astra J, Corsa D/E, Zafira B/C, Insignia A and related Opel, Alfa Romeo and Fiat models. Contact us with your VIN for confirmation.

Is 55580103 available as a new OEM part?

Yes, this is a genuine Vauxhall OEM part number (55580103) supplied new. Contact us for current stock availability.

Why Choose Eco Torque?

As specialists in gearbox rebuilds and repairs, Eco Torque takes pride in offering genuine gearbox parts, high-quality aftermarket alternatives and competitive pricing.

Need Help Finding the Right Part?

If you are unsure whether this part is compatible with your vehicle, send us your UK registration number or VIN and we will help you find the correct part.