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Exhaust valve guide 1st oversize, SET OF 6. Porsche 993 1994-98 - 99310432172
99310432172/1KIT
产品车辆组
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
Information
Exhaust valve guide - 1st oversize - set.
This is a set of six OE Match quality exhaust valve guides designed for the air-cooled Porsche 911 (993) engines produced between 1994 and 1998. These are 1st oversize valve guides, meaning they are slightly larger than standard guides to accommodate engines that have been reamed or show wear in the original guide bores. The set contains six guides, enough for a full cylinder head rebuild on the exhaust side.
SET OF 6
Fits:
Porsche 993 1994 - 1998
Diagram Ref no 2.
Valve guides are precision metal bushings pressed into the cylinder head that support and guide the movement of the exhaust valve stems. Over time, original guides can wear, allowing excessive valve stem play, reducing seal effectiveness, and increasing engine oil consumption. These OE Match valve guides are manufactured to match Porsche’s original specifications, including diameter, material quality and machining tolerance, but in a 1st oversize dimension so they fit reamed cylinder heads.
This SET OF 6 provides a complete set for one engine’s exhaust side - ideal for cylinder-head rebuilds, valve jobs or whenever the exhaust guide bores are undersized due to wear.
The exhaust valve guides:
• Support and align the exhaust valve stems so they travel accurately within the head.
• Maintain correct valve seating and combustion sealing, which is vital for performance and compression.
• Help conduct and dissipate heat from valves into the cylinder head casting.
• Reduce lateral valve stem movement, decreasing wear on stems and valve seats.
By replacing old or worn guides with a matched oversize set, you can restore tight tolerances in the valve train and help ensure efficient combustion and long-term reliability.
Valve guides wear over time due to heat, friction, and repeated valve movement. When guides become worn or oversized gaps develop between the valve stem and guide bore, the following issues can arise:
• Loss of performance and power
• Higher oil consumption
• Reduced sealing and compression
• Increased valve train wear
Installing a correct OE Match valve guide restores correct valve alignment, reduces unwanted movement, supports proper seat sealing, and prolongs the life of your engine’s top end - especially in rebuild or high-mileage applications.
Replace valve guides if you observe:
• Blue smoke from the exhaust (signifying oil burning)
• Rough idle or hesitation
• Poor compression or loss of engine power
• Valve stem play when checked during teardown
• During a cylinder head rebuild or valve job
相关参考编号
相关编号、被取代编号、交叉引用编号或替代编号，供比较之用。
99310432172
您正在查看的产品与这些编号存在交叉引用关系
This is a set of six OE Match quality exhaust valve guides designed for the air-cooled Porsche 911 (993) engines produced between 1994 and 1998. These are 1st oversize valve guides, meaning they are slightly larger than standard guides to accommodate engines that have been reamed or show wear in the original guide bores. The set contains six guides, enough for a full cylinder head rebuild on the exhaust side.
SET OF 6
Fits:
Porsche 993 1994 - 1998
Diagram Ref no 2.
Valve guides are precision metal bushings pressed into the cylinder head that support and guide the movement of the exhaust valve stems. Over time, original guides can wear, allowing excessive valve stem play, reducing seal effectiveness, and increasing engine oil consumption. These OE Match valve guides are manufactured to match Porsche’s original specifications, including diameter, material quality and machining tolerance, but in a 1st oversize dimension so they fit reamed cylinder heads.
This SET OF 6 provides a complete set for one engine’s exhaust side - ideal for cylinder-head rebuilds, valve jobs or whenever the exhaust guide bores are undersized due to wear.
The exhaust valve guides:
• Support and align the exhaust valve stems so they travel accurately within the head.
• Maintain correct valve seating and combustion sealing, which is vital for performance and compression.
• Help conduct and dissipate heat from valves into the cylinder head casting.
• Reduce lateral valve stem movement, decreasing wear on stems and valve seats.
By replacing old or worn guides with a matched oversize set, you can restore tight tolerances in the valve train and help ensure efficient combustion and long-term reliability.
Valve guides wear over time due to heat, friction, and repeated valve movement. When guides become worn or oversized gaps develop between the valve stem and guide bore, the following issues can arise:
• Loss of performance and power
• Higher oil consumption
• Reduced sealing and compression
• Increased valve train wear
Installing a correct OE Match valve guide restores correct valve alignment, reduces unwanted movement, supports proper seat sealing, and prolongs the life of your engine’s top end - especially in rebuild or high-mileage applications.
Replace valve guides if you observe:
• Blue smoke from the exhaust (signifying oil burning)
• Rough idle or hesitation
• Poor compression or loss of engine power
• Valve stem play when checked during teardown
• During a cylinder head rebuild or valve job
相关参考编号
相关编号、被取代编号、交叉引用编号或替代编号，供比较之用。
99310432172
9931043217
99310432170
99310432171
99310432172
您正在查看的产品与这些编号存在交叉引用关系
关于此套件
该套件包括以下商品:
6 x 排气门导管（第一级加大尺寸）。适用于保时捷 993（1994-98 年款）。 (99310432172/1
价格: €111.36
库存
也可在这些页面找到
相关产品
产品车辆组
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
Information
气门弹簧
#保时捷#
适合：
保时捷 993 C2 / C4 3.6L 1994-97 年
单击“放大”可查看大部件图。
图表参考编号 13。
相关参考编号
相关编号、被取代编号、交叉引用编号或替代编号，供比较之用。
99310590151
您正在查看的产品与这些编号存在交叉引用关系
#保时捷#
适合：
保时捷 993 C2 / C4 3.6L 1994-97 年
单击“放大”可查看大部件图。
图表参考编号 13。
相关参考编号
相关编号、被取代编号、交叉引用编号或替代编号，供比较之用。
99310590151
99310590151
您正在查看的产品与这些编号存在交叉引用关系
价格: €53.39
库存
产品车辆组
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) TURBO S 1994-97
Information
发动机气缸盖进气阀。
适用：
保时捷 993 C2/C4 3.6L 1994-95
保时捷 993 Turbo 1995-98
911 (993) 3.6 L M64.05
911 (993) 3.6 L M64.06
911 (993) 3.6 L M64.07
911 (993) 3.6 升 M64.08
911 (993) 3.6 升 M64.60 涡轮增压
进气阀。阀头直径：49 毫米，阀杆直径：8 毫米，阀杆长度：110 毫米，阀座角度：45°
点击“放大”查看零件大图。
图示编号 9。
相关参考编号
相关编号、被取代编号、交叉引用编号或替代编号，供比较之用。
99310540902
您正在查看的产品与这些编号存在交叉引用关系
适用：
保时捷 993 C2/C4 3.6L 1994-95
保时捷 993 Turbo 1995-98
911 (993) 3.6 L M64.05
911 (993) 3.6 L M64.06
911 (993) 3.6 L M64.07
911 (993) 3.6 升 M64.08
911 (993) 3.6 升 M64.60 涡轮增压
进气阀。阀头直径：49 毫米，阀杆直径：8 毫米，阀杆长度：110 毫米，阀座角度：45°
点击“放大”查看零件大图。
图示编号 9。
相关参考编号
相关编号、被取代编号、交叉引用编号或替代编号，供比较之用。
99310540902
99310540902
993.105.409.02
3310.239
854429-6
您正在查看的产品与这些编号存在交叉引用关系
价格: €31.32
库存
产品车辆组
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
Information
进气门和排气门的气门杆密封件
每台发动机 12 个。每台均出售。
#保时捷#
适合：
保时捷 993 1994-98
单击“放大”可查看大部件图。
图表参考编号 8。
相关参考编号
相关编号、被取代编号、交叉引用编号或替代编号，供比较之用。
99310411102
您正在查看的产品与这些编号存在交叉引用关系
每台发动机 12 个。每台均出售。
#保时捷#
适合：
保时捷 993 1994-98
单击“放大”可查看大部件图。
图表参考编号 8。
相关参考编号
相关编号、被取代编号、交叉引用编号或替代编号，供比较之用。
99310411102
99310411101
99310411102
您正在查看的产品与这些编号存在交叉引用关系
价格: €5.88
库存