Dorman Diesel Exhaust Fluid (DEF) Injector Gasket

The Dorman Diesel Exhaust Fluid (DEF) injector gasket, also called a DEF dosing valve gasket or DEF injector seal, creates a tight seal between the DEF injector (dosing valve) and the exhaust system on diesel vehicles with selective catalytic reduction (SCR) emissions systems. A worn or leaking gasket can allow exhaust gas to escape and can hurt DEF dosing performance. Replacing it helps keep the system sealed and working as designed.

Key Features:

• Seals the DEF injector against the exhaust mounting surface to help prevent exhaust leaks
• Made to handle the high heat and exhaust conditions around the SCR system
• Helps protect proper DEF delivery and emissions system operation
• Replacement part for use whenever the DEF injector is removed or serviced
• Backed by Dorman's reputation for aftermarket replacement parts

Dorman is a trusted supplier of aftermarket automotive and heavy-duty replacement parts. This gasket line gives technicians and DIY installers a dependable way to restore a leak-free DEF injector seal. Installing a new gasket each time the injector is removed is good practice.