Standard Ignition SK58 Fuel Injection Fuel Rail O-Ring Kit

Fuel Rail O-Ring Kit for Nissan and INFINITI

Standard Ignition SK58 is a fuel injection fuel rail O-ring kit built for service work on select Nissan and INFINITI applications. It uses a black rubber seal with a 21.59 mm inside diameter and 3.048 mm thickness to support fuel rail sealing where the original O-ring has hardened, flattened, or begun to leak.

Compatible with 2003-2006 Nissan Maxima, 2004-2006 Nissan Altima, 2004-2006 Nissan Quest, 2004-2006 Nissan TITAN, 2004-2006 INFINITI QX56, and other listed Nissan V6 and truck applications, Standard Ignition SK58 is a direct-fit service part for fuel system maintenance.

Key Features

• Fuel injection fuel rail O-ring kit for service replacement
• Black rubber construction
• O-ring inside diameter: 21.59 mm
• O-ring outside diameter: 27.178 in
• O-ring thickness: 3.048 mm
• Designed for select Nissan and INFINITI fuel rail applications
• Standard Ignition SK58 part number for catalog matching and lookup

Detailed Description

Standard Ignition SK58 is a fuel rail seal service kit used to restore the sealing surface between the fuel rail and injector-related fuel system components on covered vehicles. The rubber O-ring is sized for the specified applications and is intended for fuel system repair where a worn seal can lead to fuel odor, seepage, or pressure loss. This part cross-references 2-12306 and 800-9256 for the same application.

Vehicle coverage includes 2003-2006 Nissan Maxima, 2004-2006 Nissan Altima, 2004-2006 Nissan Quest, 2004-2006 Nissan TITAN, 2004-2006 INFINITI QX56, 2005-2006 Nissan Armada, 2005-2006 Nissan Frontier, 2005-2006 Nissan Pathfinder, 2005-2006 Nissan Xterra, and 2004 Nissan Pathfinder Armada. Use SK58 when replacing a fuel rail O-ring on these listed models and when matching the OE-style seal dimensions for the repair.

Common Repair Uses

• Fuel seepage at the fuel rail seal
• Fuel odor around the injector rail area
• Hard, cracked, or flattened original O-ring material
• Pressure loss caused by a leaking rail seal
• Service replacement during fuel rail or injector-related maintenance

Installation Notes

Inspect the fuel rail and mating surfaces before installation, and replace any damaged sealing surfaces before fitting the new O-ring. Clean the area thoroughly, lubricate the seal with clean fuel or an approved lubricant if required by the service procedure, and verify proper seating before reassembly. Confirm application by year, make, and model before ordering Standard Ignition SK58.

Quality Assurance

Standard Ignition supplies service parts for fuel system repair and maintenance, and SK58 is cataloged for direct application matching on the listed Nissan and INFINITI vehicles. Verify fitment against the vehicle’s fuel rail configuration before installation.