Exhaust valve guide 40.30mm. Porsche 996 Carrera 3.4L & 3.6L / Boxster 986 2.7L & 3.2L  ❭  99610414503

Valve guide - Exhaust. Length 40.30 mm
OE Match exhaust valve guide 40.30mm for Porsche 996 and Boxster 986 models. This replacement valve guide helps support correct exhaust valve movement, valve seating, and reliable cylinder head operation during engine repair or rebuild.
Sold individually

Fits:
Porsche 996 Carrera 3.4L 1997 - 2001 (Engine code: 9601 / 9602 / 9604)
Porsche 996 Carrera 3.6L 2002 - 2005 (Engine code: 9603)
Porsche 986 Boxster 2.7L 2002 - 2004 (Engine code: 9623)
Porsche 986 Boxster 3.2L 2002 - 2004 (Engine code: 9624)

Material Copper
Inner diameter [mm] 6,00 mm
Outer diameter [mm] 11,05 mm
Length [mm] 40,30 mm

Diagram Ref No 4

The exhaust valve guide keeps the exhaust valve aligned as it opens and closes. A correctly fitted valve guide helps maintain valve seating, oil control, compression, and smooth engine operation.

Functions
•  Replaces the exhaust valve guide
•  Guides and supports the exhaust valve stem
•  Helps maintain correct valve alignment and movement
•  Supports reliable valve seating and sealing
•  Helps reduce valve stem wear and excessive oil consumption
•  Suitable for cylinder head overhaul or engine rebuild work
•  OE Match replacement for Porsche 996 and Boxster 986 engine repair.

Why Replace This Part?
Valve guides can wear due to heat, mileage, friction, lubrication issues, and exhaust temperature. A worn exhaust valve guide can cause valve movement, poor sealing, smoke from oil consumption, reduced compression, valve noise, misfires, or poor engine performance. Replacement is recommended during cylinder head repair when guide wear is outside tolerance.

When to Replace This Part
•   Cylinder head rebuild or engine overhaul is being carried out
•   Exhaust valve guide wear is present
•   Valve stem movement is excessive
•   Oil consumption or exhaust smoke is being investigated
•   Compression or valve sealing issues are present
•   Exhaust valves are being replaced
•   The engine is undergoing Porsche 996 or Boxster 986 restoration.

Where it fits on the car
This valve guide fits inside the engine cylinder head and supports the exhaust valve stem. It is used in the exhaust valve side of the valve train.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99610414503

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