rsevilla
ArboristSite Lurker
I'm looking to buy some crankshaft seals for my 031AV. The seal is leaking on the clutch side and I'm told I should replace both due to age of the saw..1970s...
The dealer did the pressure test. He says the seals are no longer available through Stihl. I have found both seals as Stihl OEM NOS on the web but I don't know if a brand new "old" OEM seal is better than a new aftermarket seal.
9640 003 1340 flywheel side
9640-003-2390 clutch side
Seal sets (both sides)
Sawzilla has both bearings aftermarket Proline brand $17.95 https://sawzillaparts.com/proline-crankshaft-seal-set-for-stihl-030-031-032-chainsaw/
Lil Red Barn has the set for $17.95 when you have over the pic of the seals it says Performance Saw Supply https://www.lilredbarn.net/product-p/stihl-031-seals.htm
There is a company DIYSpareParts in the UK... They have many Stihl Parts and have both seals available but I've never heard or bought from UK
https://www.diyspareparts.com/parts/stihl/oil-seal-9640-003-1340/ £5.33
https://www.diyspareparts.com/parts/stihl/oil-seal-9640-003-2390/ £8.63 total including shipping/delivery = £26.91 = $32.90 US dollars
Seal Flywheel side only
Wolf Creek Saw Shop has an aftermarket BAO seal for the flywheel side for $6.
HL Supply new aftermarket $2.95 made by Hyway https://www.hlsproparts.com/Oil-seal-replaces-Stihl-9640-003-1340-p/h29340.htm
There is an OEM NOS on eBay flywheel side for $9.49 https://www.ebay.com/itm/3255273688...55-0&campid=5338722076&customid=&toolid=10050
Seal Clutch side only
Messick's new aftermarket $14.48 https://www.messicks.com/part/9640 003 2390
Stihl NOS Ebay $19.95 https://www.ebay.com/itm/234652519430
OEM NOS on eBay clutch side $34.95 (SEAL ONLY - expensive) https://www.ebay.com/itm/3344735122...55-0&campid=5338722076&customid=&toolid=10050
Your thoughts on where I should buy these 2 seals from?
Is NOS better than a new aftermarket?
Any other tips advice is welcomed!!!
The dealer did the pressure test. He says the seals are no longer available through Stihl. I have found both seals as Stihl OEM NOS on the web but I don't know if a brand new "old" OEM seal is better than a new aftermarket seal.
9640 003 1340 flywheel side
9640-003-2390 clutch side
Seal sets (both sides)
Sawzilla has both bearings aftermarket Proline brand $17.95 https://sawzillaparts.com/proline-crankshaft-seal-set-for-stihl-030-031-032-chainsaw/
Lil Red Barn has the set for $17.95 when you have over the pic of the seals it says Performance Saw Supply https://www.lilredbarn.net/product-p/stihl-031-seals.htm
There is a company DIYSpareParts in the UK... They have many Stihl Parts and have both seals available but I've never heard or bought from UK
https://www.diyspareparts.com/parts/stihl/oil-seal-9640-003-1340/ £5.33
https://www.diyspareparts.com/parts/stihl/oil-seal-9640-003-2390/ £8.63 total including shipping/delivery = £26.91 = $32.90 US dollars
Seal Flywheel side only
Wolf Creek Saw Shop has an aftermarket BAO seal for the flywheel side for $6.
HL Supply new aftermarket $2.95 made by Hyway https://www.hlsproparts.com/Oil-seal-replaces-Stihl-9640-003-1340-p/h29340.htm
There is an OEM NOS on eBay flywheel side for $9.49 https://www.ebay.com/itm/3255273688...55-0&campid=5338722076&customid=&toolid=10050
Seal Clutch side only
Messick's new aftermarket $14.48 https://www.messicks.com/part/9640 003 2390
Stihl NOS Ebay $19.95 https://www.ebay.com/itm/234652519430
OEM NOS on eBay clutch side $34.95 (SEAL ONLY - expensive) https://www.ebay.com/itm/3344735122...55-0&campid=5338722076&customid=&toolid=10050
Your thoughts on where I should buy these 2 seals from?
Is NOS better than a new aftermarket?
Any other tips advice is welcomed!!!
