URO AJ86874 Spark Plug Tube Seal

Jaguar Spark Plug Tube Seal Replacement

Restore a proper seal at the spark plug tube area with this URO spark plug tube seal, part number AJ86874. It is an OE-style replacement for select Jaguar V8 applications where hardened or leaking seals can lead to oil contamination around the spark plug and ignition wire connector.

Compatible with 2003-2009 Jaguar S-Type, 2004-2005 Jaguar Vanden Plas, 2004-2005 Jaguar XJ8, 2004-2005 Jaguar XJR, 2005-2009 Jaguar Super V8, 2006-2009 Jaguar Vanden Plas, 2006-2009 Jaguar XJ8, 2006-2009 Jaguar XJR, 2006-2008 Jaguar S-Type, 2007-2009 Jaguar XK, 2007-2009 Jaguar XKR, and 2009 Jaguar XF. Part number AJ86874 is also referenced under URO-004801 and related interchange numbers.

• OE-style seal profile and durometer for proper compression between the valve cover and cylinder head
• High-quality gasket material resists engine heat and oil exposure
• Helps address oil buildup around the spark plug well and ignition connector
• Direct replacement for hardened, cracked, or leaking tube seals
• Guaranteed fitment for listed Jaguar applications

What This Seal Helps Correct

• Oil collecting around the spark plug tube
• Misfire caused by contamination at the spark plug or ignition wire connector
• Vacuum leaks from cracked or hardened seals
• Engine performance loss related to poor sealing at the valve cover

Installation Notes

Inspect the valve cover sealing surface and spark plug tube area before installation. Clean away oil residue and debris so the new seal seats evenly. For best results, replace worn seals during valve cover service and verify that the tube area is dry before reassembly.

Quality Assurance

URO backs this part with a 24-month unlimited mileage warranty. The seal is built from materials selected to handle engine heat and oil degradation in Jaguar ignition service.