New valve seal (valve stem seal) suitable for the Perkins 403-11, 403C-11 and 403D-11 diesel engine (also Shibaura N844). The valve seal seals the space between the valve stem and cylinder head and prevents engine oil from entering the combustion chamber — worn seals lead to oil consumption, blue smoke and reduced performance. Price is per piece.
✔️ Exact OEM fit — direct replacement for U20406140 (replaces 120406050 / 120406070)
✔️ Prevents oil consumption and blue smoke
✔️ Sold individually — a 3-cylinder engine requires 6 seals
Perkins engine
Case
New Holland
JCB
Shibaura
Other machines
See below which machines this product is suitable for.