★★★★★

Verified Google Reviews

★★★★★

Replacement heads for my 3.5 EcoBoost worked perfect. The kit had everything I needed. The customer service was excellent. Highly recommend this company.

— Alan H. Greendale, Sr.

★★★★★

Bought a pair of Remanufactured GM Chevrolet 6.2L Casting #549 Cylinder Head Direct Injection from these guys great product and service.

— Micheal Ross

★★★★★

Part came in and work as a champ. Price was better than all other places I look for the set. Will recommended to all my soldiers and/or buddies if they need cylinder heads replace. Thank you guys.

— Demian Mingo

★★★★★

They supplied me with a perfect set of heads to bring my 1999 Ford Ranger back to life. Ranger Frank has been in the family since the day he rolled off the showroom floor. Its great to have him back on the road.

— Ron Long

Inconel Super-Alloy Performance Valve Set – Cummins ISX & QSX (Full Set of 24)

Name: Inconel Super-Alloy Performance Valve Set – Cummins ISX & QSX (Full Set of 24)
Brand: Heavy Duty Parts Company
SKU: CUMV3N
Price: 1100 USD
Availability: InStock

Includes 12 Inconel intake valves and 12 Inconel exhaust valves, each with a single-groove stem and application-specific seat angle.

$1,100.00

Pay with Credit Card

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

Upgrade your Cummins ISX or QSX diesel engine with this premium full set of 24 Inconel valves, engineered for exceptional durability in high-temperature, high-load applications. Designed for ISX11.9, ISX15, QSX15, and ISX platforms, this complete kit delivers OEM-quality fitment, outstanding thermal stability, and long-lasting performance for heavy-duty diesel engines.

This comprehensive kit includes:

12 Inconel Intake Valves: Built for superior wear, heat, corrosion, and high-pressure resistance in demanding diesel applications.
12 Inconel Exhaust Valves: Engineered to maintain strength and reliability under extreme turbo diesel exhaust temperatures.

🛠️ Performance Features

Intake Valves: Inconel construction with an optimized seat angle for improved airflow, efficiency, and durability.
Exhaust Valves: Inconel superalloy construction designed for extreme heat, stress, and long-term turbo diesel performance.
Heavy-Duty Design: Built to OEM specifications for precise fit, dependable performance, and reduced maintenance.

📊 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 Inconel 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.
Please Note: Parts, marine, and performance items carry specific warranty limitations — please review our full Warranty Policy for details.

Dedicated to Customer Satisfaction

What sets us apart from the competition is our dedication to customer satisfaction. We strive to make your shopping experience as seamless and convenient as possible. Our user-friendly online platform allows you to browse our comprehensive inventory, compare products, and place orders with ease. With secure payment options and swift shipping, you can trust that your order will arrive promptly, minimizing downtime and maximizing productivity.

727-609-1700

sales@heavydutypartscompany.com