Ducati Desmoquattro 996Ducati Desmoquattro 916Ducati Desmoquattro 888Ducati Desmoquattro 851Ducati Desmoquattro 748Ducati Desmoquattro S4Ducati Desmoquattro ST4
Note: Price is per o-ring. Sold in quantities of 4.
This o-ring replaced Ducati OEM part number 886.4.001.1A and seals the cam end caps to the heads on desmoquattro models: 996, 916, 888, 851, 748, S4, ST4. Our Viton Fluoroelastomer O-Rings are best of practice recommended for use on engines and are rated to 400°F; further, these o-rings surface are more resistant to damage than standard BUNA / Nitrile o-rings. Removing the cam end cap on the belt side (with the cam) makes it a little easier to adjust the valves on these models. Some people remove all the cam end caps while other people only remove 4 for them and patiently feed the camshaft out of the right side of the engine.
Minimum purchase: 4 at a time. Total on the heads: 8.
In depth: These Viton o-rings chosen for the mil-spec suitability for exposure to high temperatures. Your engine's cylinder heads can operate as high as 380°F. Get o-rings designed for the task. Max. Continuous Service Temperature Viton: 204°C / 399°F Buna/Nitrile: 121°C / 250°F Viton retains sealing force to prevent leaks even after compression for long periods in severe environments. After 100 hours in air at 150°C (302°F), Viton retains more than 90% of its original sealing force, while seals of nitrile retain 40%. Buna/Nitrile is the least expensive most readily available material. Viton® is a registered trademark of DuPont Dow Elastomers.
