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The SBI Performance Exhaust Valve 13006R is a precision-engineered upgrade designed to withstand the brutal thermal and mechanical stresses of the Dodge Ram 5.9L and 6.7L Cummins diesel engines. In a high-output diesel, the exhaust valve is the frontline of the combustion chamber, facing extreme temperatures that can cause standard valves to stretch or "mushroom." By utilizing a specialized bi-metal construction, SBI has created a valve that doesn't just replace the factory unit—it outperforms it. This valve is essential for any owner looking to increase reliability in heavy-towing or high-performance scenarios where exhaust gas temperatures (EGTs) can quickly compromise inferior materials.
- Bi-Metal Construction: Features a premium EV16 stainless steel head for maximum heat resistance, joined via a mid-stem weld to a high-chromium HNV3 steel stem for ultimate structural strength.
- Nitrided Surface Treatment: The entire valve undergoes a nitriding process, creating a super-hard surface layer that dramatically reduces friction, resists carbon buildup, and prevents galling within the valve guide.
- Precision Machined & Polished: Every valve is fully machined and polished to a mirror finish, a critical step that removes surface imperfections and significantly enhances fatigue resistance against high-cycle vibration.
- Hardened Valve Tip: The tip is hardened to a minimum of 50 HRC, ensuring it can withstand the constant pounding of the rocker arms without mushrooming or premature wear.
- Performance Grade Stainless Head: The stainless steel alloy is specifically selected for exhaust applications to maintain its shape and sealing integrity at temperatures that would soften a standard OEM valve.
- Sold Individually: Provides the flexibility to order exactly what your build requires, whether it is a single-valve replacement or a complete 12- or 24-valve performance overhaul.
From an educational standpoint, the mid-stem weld technology used in the 13006R is what sets a true performance valve apart. By using two distinct alloys—one for heat resistance at the head (EV16) and one for wear resistance on the stem (HNV3)—SBI provides the "best of both worlds." The addition of the nitriding process further hardens the surface, making it nearly impervious to the abrasive soot found in diesel exhaust. This combination of metallurgy and surface treatment ensures that your valvetrain remains stable and your compression stays high. Whether you are rebuilding a million-mile workhorse or a high-boost competition rig, the SBI 13006R provides the thermal defense and mechanical durability your Cummins demands.
Specifications:
- Wafer: N
- Length: 4.893
- Stem Type: 1G
- Seat Angle: 45
- Tip Length: 0.3000
- Head Diameter: 1.299
- Stem Diameter: 0.2756
Note: Qty of 12 exhaust valves required per engine.
The SBI Performance Exhaust Valve 13006R is a precision-engineered upgrade designed to withstand the brutal thermal and mechanical stresses of the Dodge Ram 5.9L and 6.7L Cummins diesel engines. In a high-output diesel, the exhaust valve is the frontline of the combustion chamber, facing extreme temperatures that can cause standard valves to stretch or "mushroom." By utilizing a specialized bi-metal construction, SBI has created a valve that doesn't just replace the factory unit—it outperforms it. This valve is essential for any owner looking to increase reliability in heavy-towing or high-performance scenarios where exhaust gas temperatures (EGTs) can quickly compromise inferior materials.
Bi-Metal Construction: Features a premium EV16 stainless steel head for maximum heat resistance, joined via a mid-stem weld to a high-chromium HNV3 steel stem for ultimate structural strength.
Nitrided Surface Treatment: The entire valve undergoes a nitriding process, creating a super-hard surface layer that dramatically reduces friction, resists carbon buildup, and prevents galling within the valve guide.
Precision Machined & Polished: Every valve is fully machined and po[...]
The SBI Performance Exhaust Valve 13006R is a precision-engineered upgrade designed to withstand the brutal thermal and mechanical stresses of the Dodge Ram 5.9L and 6.7L Cummins diesel engines. In a high-output diesel, the exhaust valve is the frontline of the combustion chamber, facing extreme temperatures that can cause standard valves to stretch or "mushroom." By utilizing a specialized bi-metal construction, SBI has created a valve that doesn't just replace the factory unit—it outperforms it. This valve is essential for any owner looking to increase reliability in heavy-towing or high-performance scenarios where exhaust gas temperatures (EGTs) can quickly compromise inferior materials.
- Bi-Metal Construction: Features a premium EV16 stainless steel head for maximum heat resistance, joined via a mid-stem weld to a high-chromium HNV3 steel stem for ultimate structural strength.
- Nitrided Surface Treatment: The entire valve undergoes a nitriding process, creating a super-hard surface layer that dramatically reduces friction, resists carbon buildup, and prevents galling within the valve guide.
- Precision Machined & Polished: Every valve is fully machined and polished to a mirror finish, a critical step that removes surface imperfections and significantly enhances fatigue resistance against high-cycle vibration.
- Hardened Valve Tip: The tip is hardened to a minimum of 50 HRC, ensuring it can withstand the constant pounding of the rocker arms without mushrooming or premature wear.
- Performance Grade Stainless Head: The stainless steel alloy is specifically selected for exhaust applications to maintain its shape and sealing integrity at temperatures that would soften a standard OEM valve.
- Sold Individually: Provides the flexibility to order exactly what your build requires, whether it is a single-valve replacement or a complete 12- or 24-valve performance overhaul.
From an educational standpoint, the mid-stem weld technology used in the 13006R is what sets a true performance valve apart. By using two distinct alloys—one for heat resistance at the head (EV16) and one for wear resistance on the stem (HNV3)—SBI provides the "best of both worlds." The addition of the nitriding process further hardens the surface, making it nearly impervious to the abrasive soot found in diesel exhaust. This combination of metallurgy and surface treatment ensures that your valvetrain remains stable and your compression stays high. Whether you are rebuilding a million-mile workhorse or a high-boost competition rig, the SBI 13006R provides the thermal defense and mechanical durability your Cummins demands.
Specifications:
- Wafer: N
- Length: 4.893
- Stem Type: 1G
- Seat Angle: 45
- Tip Length: 0.3000
- Head Diameter: 1.299
- Stem Diameter: 0.2756
Note: Qty of 12 exhaust valves required per engine.