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Thumbnail Filmstrip of 5.9 | 3.9 Cummins Exhaust Valve Seat SBI SB1722E-1 Images
The SBI Exhaust Valve Seat SB1722E-1 is a critical restoration component for the legendary Dodge 5.9L Cummins and its 3.9L 4BT counterpart. In these heavy-duty diesel engines, the exhaust valve seat acts as the foundational sealing surface that must withstand incredible thermal loads and mechanical pounding. Because exhaust gases are expelled at scorching temperatures, the seat insert is responsible for conducting heat away from the valve and into the cylinder head cooling passages. This SBI insert is engineered to meet stringent industry standards, providing the metallurgical integrity required to prevent seat recession and maintain the high-compression seal necessary for peak diesel performance.
- Precision Engineering: Specifically designed as a high-quality replacement for Dodge 5.9L and 3.9L 4BT diesel engine cylinder heads.
- Individually Cast: Unlike mass-extruded alternatives, every SBI seat is individually cast to ensure superior material formation and consistent density throughout the part.
- Optimal Heat Transfer: Manufactured with advanced materials that facilitate efficient thermal transfer, protecting your valves from overheating and premature wear.
- Stringent Quality Standards: Produced to meet or exceed rigorous industry specifications, ensuring a reliable press-fit and long-term durability.
- Ordering Flexibility: Sold individually, allowing engine builders to replace a single damaged seat or perform a full multi-cylinder head restoration.
Choosing the SB1722E-1 is an investment in the "bottom-line" reliability of your engine's combustion chamber. Over time, original valve seats can become pitted, cracked, or recessed due to the extreme environment of a diesel exhaust port. By utilizing SBI’s individually cast inserts, you ensure that the valve and seat interface remains perfectly matched, preserving the volumetric efficiency and power output of your 4BT or 5.9L Cummins. Whether you are conducting a professional engine service or a performance rebuild, these valve seat inserts provide the structural foundation required for an engine that is built to last another several hundred thousand miles.
Specifications:
- Angle: 45
- O.D: 1.722
- I.D: 1.357T
- Depth: 0.2650
- Exact O.D: 1.7220
- I.D Top Taper: 1.574
The SBI Exhaust Valve Seat SB1722E-1 is a critical restoration component for the legendary Dodge 5.9L Cummins and its 3.9L 4BT counterpart. In these heavy-duty diesel engines, the exhaust valve seat acts as the foundational sealing surface that must withstand incredible thermal loads and mechanical pounding. Because exhaust gases are expelled at scorching temperatures, the seat insert is responsible for conducting heat away from the valve and into the cylinder head cooling passages. This SBI insert is engineered to meet stringent industry standards, providing the metallurgical integrity required to prevent seat recession and maintain the high-compression seal necessary for peak diesel performance.
Precision Engineering: Specifically designed as a high-quality replacement for Dodge 5.9L and 3.9L 4BT diesel engine cylinder heads.
Individually Cast: Unlike mass-extruded alternatives, every SBI seat is individually cast to ensure superior material formation and consistent density throughout the part.
Optimal Heat Transfer: Manufactured with advanced materials that facilitate efficient thermal transfer, protecting your valves from overheating and premature wear.
Stri[...]
The SBI Exhaust Valve Seat SB1722E-1 is a critical restoration component for the legendary Dodge 5.9L Cummins and its 3.9L 4BT counterpart. In these heavy-duty diesel engines, the exhaust valve seat acts as the foundational sealing surface that must withstand incredible thermal loads and mechanical pounding. Because exhaust gases are expelled at scorching temperatures, the seat insert is responsible for conducting heat away from the valve and into the cylinder head cooling passages. This SBI insert is engineered to meet stringent industry standards, providing the metallurgical integrity required to prevent seat recession and maintain the high-compression seal necessary for peak diesel performance.
- Precision Engineering: Specifically designed as a high-quality replacement for Dodge 5.9L and 3.9L 4BT diesel engine cylinder heads.
- Individually Cast: Unlike mass-extruded alternatives, every SBI seat is individually cast to ensure superior material formation and consistent density throughout the part.
- Optimal Heat Transfer: Manufactured with advanced materials that facilitate efficient thermal transfer, protecting your valves from overheating and premature wear.
- Stringent Quality Standards: Produced to meet or exceed rigorous industry specifications, ensuring a reliable press-fit and long-term durability.
- Ordering Flexibility: Sold individually, allowing engine builders to replace a single damaged seat or perform a full multi-cylinder head restoration.
Choosing the SB1722E-1 is an investment in the "bottom-line" reliability of your engine's combustion chamber. Over time, original valve seats can become pitted, cracked, or recessed due to the extreme environment of a diesel exhaust port. By utilizing SBI’s individually cast inserts, you ensure that the valve and seat interface remains perfectly matched, preserving the volumetric efficiency and power output of your 4BT or 5.9L Cummins. Whether you are conducting a professional engine service or a performance rebuild, these valve seat inserts provide the structural foundation required for an engine that is built to last another several hundred thousand miles.
Specifications:
- Angle: 45
- O.D: 1.722
- I.D: 1.357T
- Depth: 0.2650
- Exact O.D: 1.7220
- I.D Top Taper: 1.574