This Air Filter is designed to fit the Mountfield Models listed below. Please check both your model number and year of manufacture. If you do not see your model number or year listed, please call us on 0800 669 6325 and we will be happy to assist you.All parts are shipped from our head office in the United Kingdom.Please be aware that over time, part numbers may have been changed or superseded. For the most up to date information and guidance, please feel free to contact us.We recommend that parts are fitted by your local service dealer. You can find additional support guides for fitting at www.servicelink.org.ukAll parts are shipped via DPD*. On the morning of delivery, usually by 11 am you will receive either a text or email with a predicted hour window. If you wish to amend the delivery day or address, this can be done using the link supplied.*Delivery to mainland UK only.Compatible Models:HP164 (2013),HP164 (2014),HP42R (2014),HP46R (2012),HP46R (2013),MANOR COMPACT 36 (2016),MANOR COMPACT 36 (2017),MANOR COMPACT 36 (2018),MOUNTFIELD S461 HP (2013),MOUNTFIELD S461R HP (2013),RSC 100 OHV (2013),RSC 100 OHV (2014),RSCT 100 OHV (2013),RSCT 100 OHV (2014),S421 HP (2012),S421 HP (2013),S421 HP (2014),S421R HP (2014),S421R PD (2014),S461 HP (2012),S461 HP (2014),S461 HP (2015),S461 HP (2016),S461R HP (2012),S461R HP (2014),SP164 (2014),SP42R (2014),