Mountfield 421PD Gearbox Spring Fits 461PD SP533 ES 122450063/0 Genuine Parts
This is a genuine Mountfield replacement part, built to very high standards and an exact replacement for the original part
Genuine gearbox spring fits Mountfield models and year variants listed below
- 421 PD (2008)
- 46 PD (2005) [294485221/STG]
- 46 S (2003) [23-3281-32]
- 460R PD ES (2008)
- 461 PD (2007)
- 462 PD (2007) [294485033/CAL]
- 463 PD/ES (2007)
- 46SP (2009)
- 4820 PD (2009) [294485023/M09]
- 4820 PD (2014)
- 4820 PD (2018)
- 4820 PD BW (2014) [299486123/MTF]
- 51 PD (2005) [294538121/STG]
- 510 HSP140-3 (2018)
- 510 PD (2007) [294538023/MO6]
- 510 PD/ES (2007)
- 511 PD INOX (2010)
- 513 PD (2008)
- 5310 PD (2009)
- 5310 PD BW INOX (2009) [291597043/MI9]
- 5310 PD BW SILENT (2009) [291577043/MI8]
- 5320 PD ES (2011)
- 5330 PD BW (2012)
- M480 PD (2010) [295505023/M10]
- M5010 PD (2008)
- M5520 PD (2009)
- M5530 PD (2008)
- M5530 PD (2009)
- M60 PD (2006) [292552023/MOE]
- S42 PD Li (2016)
- S421 PD (2012)
- S46 HP Li (2016)
- S461 PD (2008)
- SP 550 TRI-CUT (2007)
- SP425 (2014)
- SP533 ES (2017)
- SP533IS (2018)
- SP53H (2018) [295546038/SF]
Part number 122450063/0
Part number 12 on the diagram
FAQ
Frequently Asked Questions
Questions we get asked by our customers. If you need more help please get in touch via our chat.
We aim to dispatch all orders within 1 business day. Orders placed before 2pm are usually shipped the same day.
We ship 99% of our orders via Royal Mail. If you select the free shipping option, you will typically receive your parts within 4 working days.
We stock both genuine parts and premium aftermarket alternatives under our own brand, HardRidge Parts, designed for durability and performance.
Each product page includes compatibility information. If you’re unsure, just contact us with your model number—we’re happy to help.
Look for a sticker on the lawnmower deck—it will show the model year and often an ART number. We can identify your machine using that information.
We offer a 30-day return policy. Parts must be unused and in their original condition. Please see our Returns Policy page for full details.
At the moment, we only ship within the UK.
Orders under £30 are sent via Royal Mail 2D tracking, which provides delivery confirmation but not live updates. Orders over £30 are sent with a fully tracked service via Royal Mail or Evri.
You can email us atsales@outdoorspares.comor use the contact form on our Contact Us page. We typically respond within 24 hours on business days. We also offer live chat and usually reply straight away, though during busy periods it may take a little longer.