The Bonneville Shop Triumph Crankshaft Oil Seal – 1963-70 350/500/650 – PN# 70-3876

If you’re restoring or maintaining a vintage Triumph from the ’60s, this crankshaft oil seal is a must-have.

It fits 350, 500, and 650 models from 1963 to 1970.

The part number is PN# 70-3876, also known as E3876, and it’s from The Bonneville Shop—so you know it’s made for these classic bikes.

Brand new, still in the packaging, and ready to keep your oil where it belongs.

No universal junk here, just a direct replacement for your Triumph.

Whether you’re doing a full engine rebuild or just chasing a leak, this seal is the right call.

Made to OEM specs, so it’ll fit right and last.

Keep that classic British steel on the road where it belongs.