Product was as described and packaged well! Communication throughout prosses was also great! I will definitely be using them in the future with other projects.
Parts arrived as promised. Ported heads gave me that low end torque and high rev HP I was looking for! ...if only I did the cam at the same time.
Great company!! The heads arrived in great shape with all the parts. Very quick email responses to questions, comments, and concerns. One little issue with a few parts but was taken care of promply
Best prices and customer service on Duramax LML heads out there. Shipped fast and very cool about how long it took to get the cores back.
Stellite Series Premium Performance Valve Set – Cummins ISX & QSX (Full Set of 24)
Includes 12 intake valves and 12 exhaust valves made from Stellite cobalt-chromium alloy. Intake valves use a 20° seat angle, while exhaust valves use a 45° seat angle.
$595.00
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Additional Info
Cummins ISX & QSX Heavy-Duty Diesel Engine Stellite Performance Valve Set – Full Set of 24 New Valves
OEM-Quality Heavy-Duty Replacement For Maximum Durability
Enhance the performance of your Cummins heavy-duty diesel engines with this complete set of 24 high-quality valves, designed for the ISX11.9, ISX15, QSX15, and ISX engines. This set includes 12 intake valves with Stellite utilizing a cobalt-chromium alloy, offering extreme hardness, wear, heat, and corrosion resistance for demanding, high-pressure, and abrasive industrial applications and 12 exhaust valves constructed with Stellite, engineered to withstand the rigors of turbocharged diesel applications.
🛠️ Performance Features
- Intake Valves: Stellite cobalt-chromium construction with an optimized seat angle for superior wear resistance, heat resistance, and airflow.
- Exhaust Valves: Stellite cobalt-chromium construction engineered for extreme temperatures, pressure, corrosion, and abrasive diesel conditions.
- Heavy-Duty Design: Built to OEM specifications for reliable fitment, improved durability, and longer service intervals.
📊 Technical Specifications
Exhaust Valve Specs:
- Head Diameter: 1.790″
- Overall Length: 8.810″
- Seat Angle: 45°
- Stem Diameter: .3789″
- Grooves: Single Groove
- Tip Length: .7579″
Intake Valve Specs:
- Head Diameter: 1.870″
- Overall Length: 8.503″
- Seat Angle: 20°
- Stem Diameter: .3789″
- Grooves: Single Groove
- Tip Length: .4669″
🚘 Fitment Applications
This valve set is specifically designed for the following Cummins diesel engines::
- ISX11.9/12 (11.9L Turbo Diesel, L6, 24-valve configuration)
- ISX15 (14.9L Turbo Diesel, L6, 24-valve configuration)
- QSX15 (14.9L Turbo Diesel, L6, 24-valve configuration)
- ISX/QSX (15.0L Turbo Diesel, L6, 24-valve configuration)
📦 Quality & Warranty
- Reliability: Precision-engineered for perfect fitment and enhanced power delivery.
- Warranty: Includes a 90-Day Warranty for guaranteed quality and freedom from manufacturing defects. Click here for details.
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