Standard Ignition SK40 Fuel Injector Seal Kit

Fuel Injector Seal Kit for Service Repairs

Standard Ignition SK40 is a fuel injector seal kit for servicing one injector in supported Mazda, Nissan, and Isuzu applications. It includes three O-rings in black plastic construction and is used to restore sealing at the injector interface during maintenance or repair.

Key Features

• Fuel injector seal kit for one injector
• Black plastic construction
• Includes 3 O-rings
• No hardware included
• No nozzle seal, pintle cap, or upper intake manifold gaskets included
• Standard Ignition SK40 part number for direct catalog lookup

Detailed Description

Standard Ignition SK40 is built for injector seal service where worn or damaged O-rings need replacement. The kit uses three seals with defined dimensions to support a proper injector seal interface: O-ring 1 measures 9.398 mm inside diameter, O-ring 2 measures 8.636 mm inside diameter, and O-ring 3 measures 7.62 mm inside diameter. This part cross-references 2-12076 and 800-9217 for the same application. Use SK40 when servicing fuel injector sealing on 1990-1994 Mazda MPV, 1990-1993 Mazda B2600, 1993-1994 Nissan D21, 1990-1992 Nissan D21, 1988-1991 Isuzu Pickup, 1988-1991 Isuzu Trooper, and 1989-1990 Isuzu Amigo. Standard Ignition SK40 is a direct-fit service kit for these injector seal applications.

Common Repair Uses

• Fuel odor caused by leaking injector seals
• Hard starting related to injector air leaks
• Rough idle from worn injector O-rings
• Fuel seepage at the injector body
• Seal replacement during injector service on Mazda MPV, Mazda B2600, Nissan D21, Isuzu Pickup, Isuzu Trooper, and Isuzu Amigo

Installation Notes

Inspect the injector bore and sealing surfaces before installation. Replace damaged seals during injector service, and verify the injector is seated correctly after assembly. Confirm vehicle application by year, make, model, and emissions configuration before ordering, especially for Nissan D21 federal emissions coverage.

Quality Assurance

Standard Ignition supplies service parts for fuel system repair applications, and SK40 is cataloged for direct application matching in supported vehicles. Verify fitment against the vehicle’s injector configuration before installation.