Yes 400 and 900 series same part
John Deere part number TY25878.
The OEM Parts Store supplies parts for John Deere mowers. If you contact them and describe the part you need replaces, they will tell you where you can find the part number.
You might be able to find this on the John Deere website. There are also ones available with the part that you purchased.
Www.johndeere.com is a good place to look. They sell replacement parts for all kinds of John Deere vehicles and equipment. The best place to buy parts for your John Deere tractor is through your local dealer or https://jdparts.deere.com/ which is their website. www.keepingitgreen.com and www.tractorhouse.com also sell John Deere parts.
Your John Deere dealer would be a good place to start but if they no longer have the part available try the guys in the related link...
Oil Filter part # is AM107423
I have a model 950 tractor that also uses the same heat sensor switch - ch15516. As far as I know, you cannot use anything but this john deere part. It is about $35 a your nearest Deere dealer.
Try use a Wix instead it's a better filter.M801101 | John Deere | JDR | 33263http://www.wixfilters.com/filterlookup/PartDetail.asp?Part=33263
Napa = 8222nf interstate = sp22nf
Im not sure that the 1847 is a date as it could be a part number. they go for $60 to $80 on ebay. The first John Deere tractor was made in 1923.
It depends if one is looking for a walk behind or ride on mower. A walk behind John Deere Mower can be bought for $300. A ride on John Deere mower will cost between $1500 and $4000.
correct part for js45a spark plug and filter