Seal & O-ring Specifications

Sat Feb 11, 2017 2:58 pm

Front wheel, right-hand seal: 25x40x5

Front wheel, left-hand seal: 45x56x6

etch · Sat Apr 08, 2017 2:25 pm

Intake manifold o-ring: OEM runs around £6 each, but is just a plain o-ring. I suspect it's a JIS S-38 which is 37.5mm ID and 2mm CS, but I've put in 37x2mm and all seems good and snug. Make sure you get Viton/FKM.

etch · Sat Oct 28, 2017 7:54 am

Replaced the large o-ring behind the oil filter plate when I did my oil change. The packet came labeled: 87 ID 4mm CS.

There are two identical rings if you have an oil cooler - one between the oil cooler collar and the engine, and another against the oil collar in the aluminium plate. To change both you need to undo the take the oil cooler pipes off, then the oil filter, and undo the union bolt (needs a deep socket, 22mm irc)

Wed Nov 29, 2017 12:29 am

etch wrote: ↑
Sat Oct 28, 2017 7:54 am
Replaced the large o-ring behind the oil filter plate when I did my oil change. The packet came labeled: 87 ID 4mm CS.

There are two identical rings if you have an oil cooler - one between the oil cooler collar and the engine, and another against the oil collar in the aluminium plate. To change both you need to undo the take the oil cooler pipes off, then the oil filter, and undo the union bolt (needs a deep socket, 22mm irc)

We didn't get the oil cooler here in the US so the o-rings may be different for the Seca II models. But good note on the Diversions.